Process Equipment

All Items
Static And Pipeline Equipment
Internals for Separators
Pressure Vessels & Drums

NORDEN has the expertise and experience to design, fabricate and install a variety of different types and sizes of pressure vessels especially with different kinds of INTERNALS. Over the years we have worked on numerous pressure vessels with more than 70 mm wall thickness and 5000 mm diameter.

Vessels are designed and engineered using latest versions of standards and softwares such as ASME, EN, BS and PVElite, COMPRESS, NozzlePRO also finite element analysis and solid modelling.Range of materials includes carbon steel, stainless steel,monel, inconel and other exotic materials.

Pressure vessels are used in a variety of applications. These include the industry and the private sector. They appear in these sectors respectively as industrial compressed air receivers and domestic hot water storage tanks, other examples of pressure vessels are: diving cylinder, recompression chamber, distillation towers, autoclaves and many other vessels in mining or oil refineries and petrochemical plants, nuclear reactor vessel, habitat of a space ship, habitat of a submarine, pneumatic reservoir, hydraulic reservoir under pressure, rail vehicle airbrake reservoir, road vehicle airbrake reservoir and storage vessels for liquefied gases such as ammonia, chlorine, propane, butane and LPG.

For design and construction purposes, the pressure vessel is generally defined as the pressure vessel proper including welded attachments up to, and including, the nozzle flanges, screwed or welded connectors, or the edge to be welded at the first circumferential weld to connecting piping.

The range of materials used for pressure vessels is wide and includes, but is not limited to, the following:

  1. Carbon steel (with less than 0.25% carbon).
  2. Carbon manganese steel (giving higher strength than carbon steel).
  3. Low alloy steels.
  4. High alloy steels.
  5. Austenitic stainless steels.
  6. Non-ferrous materials (aluminum, copper, nickel and alloys).
  7. High duty bolting materials.

Clad materials are accepted by national standards but often only the base material thickness can be used in design calculations.

Test Separators

NORDEN Skid-mounted test separators perform a vital function in the analysis of both onshore and offshore wells. Test separators have a range of applications, including:

  • Exploration of both onshore and offshore wells
  • Well development
  • Well production and resource extraction
  • Post-production cleanup

Typical test separators are made up of a storage vessel, a multi-meter measuring system that detects oil and gas flow rates, relief values to negate excessive pressure, and sampling points where effluent is extracted for analysis. Test separators are available in the following configurations:

  • 2-phase separators. These are the simplest designs, which simply extract oil and gas (phase one) from water (phase two).
  • 3-phase separators. More advanced analysis is facilitated with a three-phase separator, which divide oil (phase one), gas (phase two), and water (phase three).
  • 4-phase separators. The most sophisticated separators add an additional phase, which separately extracts sand from oil, gas, and water.

Well test separators are considered essential equipment in the exploration, development and production of active wells. They provide an ongoing return on investment by giving onsite decision-makers crucial information that facilitates the more efficient extraction of valuable resources.


  • Onshore and offshore exploration, development, and production well testing after cleanup


Wire Mesh Mist Eliminator

Mist Eliminators provide high performance wherever liquid entrainment must be removed from a vertically flow gas stream. This device contains a knitted wire mesh, supported by an open grid. The gas flows unimpeded through the wire mesh, but the inertia of the droplets causes them to impact the wire surface. The droplets then coalesce on the wire surface. When the droplets reach a certain size they fall down due to gravity.

 Knitted Wire Mesh Mist Eliminators are sometimes called crinkled wire mesh or mesh blankets. NORDEN has manufactured thick pads of knitted wire mesh for use in the oil and gas industry. Knitted wire mesh is a cost-effective, reliable solution that is well proven and it continues to be used in modern equipment designs. The knitted wire media provides surface area for entrained liquid droplets to strike, adhere and coalesce into a free flowing liquid film which drains by gravity.

Gas velocity is influenced by the type and style of mist eliminator, the relative geometry of mist eliminator to vapor flow, as well as process considerations such as operating pressure, fluid viscosities and liquid surface tension. Typical values are 0.35 ft/sec for vertical flow and 0.42 ft/sec for horizontal flow, assuming an air water system at ambient conditions.

Filament diameter, filament surface area, pad thickness, and interfacial surface tension between the filament and collected liquid are the primary variables to consider in specifying a knitted mesh pad. The NORDEN style is the industry standard general purpose mesh. It is rated to remove 99.9% of 10 micron droplets with 1” water column pressure drop, based on air and water at ambient conditions. We have developed many additional mesh styles to tailor the mist eliminator performance to your needs.



Air Filters

Deferent type of Air Filters :

HEPA Filters:

Our HEPA filters are designed for high efficiency commercial and industrial applications. The efficiency rages include: 950 Series - 95% and 1000 Series - 99.99% all based on a .30 micron size particle. Our HEPA filters are produced in a wide range of sizes, frame types and header combinations and are ideal for converting or upgrading existing systems.


These are used for process related ventilation systems. Heavy-duty construction makes for an ideal primary filter. Variety of custom media also provides excellent filtration and capture of fine particulate. Combination synthetic and cellulose media is most commonly found in powder paint spray booths. To facilitate improved powder reclaim, spun bond polyester media is recommended.

Extended surface non-supported bag filter:

Extended surface non-supported bag filters are designed for use in air filtration systems and equipment where medium to high efficiency filtration is required. Available in a wide variety of standard sizes, face dimensions, pocket number and depth, our bag filter provides optimal performance in air handling systems where the air flow is constant.

Galvanized metal frame, (header) and internal pocket support retainers, provide strength and rigidity to this product. The pockets, comprised of 100% polymer fibers, are secured within the inside perimeter of the header by a crimping process between individual j-channels. Each pocket is sonically sealed along the outside edges to prevent bypass. Rigid construction, extended surface, long service life and savings in energy costs are features and benefits which make our bag filter an excellent option for meeting the requirements of medium to high efficiency filtration.

Shell & Tube Heat Exchangers

NORDEN has gathered knowledge and expertise in the fabrication of heat exchangers in a variety of sizes. Our shell type heat exchanger is made using the best equipment and is available at COST EFFECTIVE PRICES.

We have in-house expertise for the thermal and mechanical design of SHELL and TUBE heat exchangers based on relevant codes and standards such as TEMA, ASME and API. Design and engineering is performed using CAE and CAD systems (including finite element analysis) such as HTFS (HTRI), Aspen B-JAC and Ansys.

We’ve ability to manufacture heat exchangers from carbon steel (including low temperature carbon steel), stainless steel, Monel, Haste alloy and other exotic materials. Welding processes used in the fabrication include stick, MIG, sub arc and TIG welding.

Shell and tube heat exchangers are used extensively throughout the process industry and as such a basic understanding of their design, construction and performance is important to the practicing engineer. The objective of this paper is to provide a concise review of the key issues involved in their thermal design without having to refer to the extensive literature available on this topic. The author claims no originality but hopes that the format and contents will provide a comprehensive introduction to the subject and enable the reader to achieve rapid and meaningful results. The optimum thermal design of a shell and tube heat exchanger involves the consideration of many interacting design.

Gas Vane Separators

NORDEN  vane mist extractors can be found throughout the industry as production separators, three phase separators, knock-out drums, and in a variety of other applications where liquid removal is required. The separator and scrubber offer NORDEN's Vanes mist extractors for high efficiency reliable free liquid and aerosol mist removal. Units are available with or without slug catching ability, in vertical and horizontal configurations. Design is available in all major design codes and certifications. Sizes are available from 6" through 120" diameter.

NORDEN vane separators are designed to perform at high efficiency while operating over a wide range of flows.  The VS will effectively arrest droplets as small as 5 microns.  Efficiency is influenced by particle size distribution and liquid loading.  When particle size is below 5 microns, an internal upstream mesh pad or vane agglomerator/coalescer may be utilized.  This integral part of the separator will raise the removal efficiency up to 99.5% of liquid droplets 1 micron and larger. 

 NORDEN vane separators are available in standard in-line configuration (inlet and outlet 1800 apart at the same elevation), or any of seven (7) alternate configurations, to meet the needs of different piping arrangements.   Vane assemblies (also known as vane bundles) have far greater structural integrity and are more mechanically robust than mesh pads.  These features, plus the inherently more open architecture and resistance to plugging, allow the vane separator to be applied successfully in pulsating service (reciprocating compressors). No maintenance is normally required for these designs. Vane blades are available in carbon steel, stainless steel, duplex, titanium, zirconium, Hastelloy, Inconel, Monel, and other alloys.  All VS separators feature an internal liquid sump below the vane bundle.  These features assure that removed liquids are shielded from the gas flow, avoiding re-entrainment. Pressure drops across vane elements seldom exceed 1/3 PSI . 

Vane Type Mist Eliminator

NORDEN's vane types are very usual and useful internals for liquid separation from gas. These types according to design and shape can remove the droplets more than 8 microns.The mist droplets, which are separated by the resulting centrifugal forces, collect on the vane blades. This coalesced liquid film is then drained through slits or pockets to a liquid sump from where it drains to the liquid compartment of the vessel. 

Materials of Construction 

  • Stainless steel
  • Carbon steel
  • Nickel-based alloys
  • Titanium
  • Fluoroplastics
  • Polypropylene
  • Polysulfone
  • ther special materials
  • available on request


Vanes can operate at higher gas velocities than knitted mesh mist eliminators. Gas velocity will be influenced by the type and style of mist eliminator, the relative geometry of mist eliminator to vapor flow, as well as process considerations such as operating pressure, fluid viscosities and liquid surface tension. Typical values are 0.5 ft/sec for vertical flow and 0.65 ft/sec for horizontal flow, assuming an air/water system at ambient conditions.


Filter Bags

NORDEN provides a full line of bag filter systems for use in removing suspended matter and sediment from liquids at flow rates from under 1 GPM to over 10,000 GPM. They are ideal for use in processing industrial and commercial fluids.

We carry bag filter systems of all sizes and volumes, for use on projects that require low or moderate flow particulate removal. They are easy to service and maintain.

We are known for our comprehensive project management, which ensures that every project runs smoothly and that any change in conditions or flow are immediately met with the requisite changes in the treatment system.

NORDEN also carries cartridge filter systems for more critical discharge standards. Contact us for carbon information on your application and for a no cost evaluation.

Air Coolers

Air Cooled Heat Exchanger’s also known as Fin Fan heat exchangers are typically used in applications where water is not available or the desired process outlet temperature can be achieved given the maximum ambient temperatures.  Also, air cooled equipment can be a more simple solution against water cooled. With our vast knowledge and expertise in a wide range of industries and markets we can help put you in the most cost effective and efficient option available. NORDEN can provide equipment with copper, carbon steel, or stainless construction including the headers, tubes and fins. The air-cooled heat exchangers are mostly used when the plant location and the ambient conditions do not allow an easy and economic use of other cooling systems.

NORDEN provides complete aircooler units including tube bundle assembly, motor-fan groups, structure, access ladders and walkways.

NORDEN supplies also Pre-assembled modules.These units are expressly designed for safe transport and easy installation on the plant. On demand they can be shop tested before delivery.

The air cooled tube bundle cover the complete range of: 1-Metallurgies from low alloy and carbon steel, stainless steel, duplex and super-duplex stainless steel, nickel alloys and titanium. 2-Plugs, cover or high pressure manifold header boxes design. 3-Extruded, L-footed or Embedded aluminum tubes fins. 

As well as common configurations we can also supply additional features like: 

  • Finite element analysis header box verification under severe load cases including nozzle to header join.
  • High pressure design up to 700 Bar(g) made by forgings including tube ends to manifold box IBW (Internal bore welding) joint.
  • Plug type header box local tube-ends to tube sheets welded joint PWHT through plug hole.
  • Low noise emission design (76 db(A) power level) with low noise fan and noise damping panels.
  • Resonance vibration free design by spectral analysis check
  • Completely pre-assembled modularized units.
  • Winterization arrangement made of intake louvers, by-pass louvers, exhaust louvers and enclosure.
  • Design and manufacturing of frequency converter cabinets and container units comprehensive of MV/LV transformers, MCC, PLC, frequency converters and cooling.
Gas Filter Separators


NORDEN filter separators have set the standard for reliability and performance on today's gas pipelines. Filter separators are found removing solids and liquids on compressor suctions and plant entrances. Standard construction includes NORDEN exclusive Quick Opening Closure, z-bar 4 point element supports, and high efficiency mist extractors available. Mist extractor options include wave plate vane, wire mesh, and cyclone tubes. Vessel design is available in all major design codes and certifications. Filter separators are available in vertical and horizontal configurations in 6" through 120" diameter sizes.

 NORDEN Horizontal double barrel and/or Vertical filter separators are designed to provide efficient liquid/solid removal and high gas capacities. The coalescer filter section removes bulk liquid and solid particles and also coalesces fine liquid droplets into larger ones. These larger droplets are then removed in the second Double Pocket (DP) Vane] section. NORDEN utilizes high capacity DP Vanes to increase the separator’s throughput and thus minimize the separator diameter.

 The double barrel configuration allows you to maximize the gas flow in the upper barrel without re-entrainment while the liquid drops into the lower barrel. NORDEN offers standard coalescing filters that can be replaced periodically or designs that can be cleaned and reused.

coalescing separator and media combination can prevent costly problems and downtime with downstream equipment, such as
compressors, membranes, instrument valves, piping, etc. Benefits of NORDEN's gas filter  separators are as follow:
High gas capacity with a compact vessel, Low maintenance, No plugging of the DP Vane, High efficiency and Debottle neck existing equipment. They can be used inGas Plants, Transmission Stations, Gas Inlet to Chemical & Petrochemical Plants, Gas Gathering Systems and Turbine Fuel Gas.

Inlet Device

The Inlet device is used for foam Breaking, and can be installed in horizontal inlets on vertical separators and also can be added to horizontal three phase separators. Inlet device in an oil/gas separator is used to direct the flow and absorb the flow momentum of coming stream. However, the inlet has received less attention than the gas outlets. Actually inlet device play an important role in overall performance of a separation vessel. previously inlet devices were as Flat impact plates, Dished-head plates, Half-open pipes and Open pipes directed at vessel heads. They are more appropriate for handling low-momentum fluids. However, for higher-momentum fluids, these inlets can cause problems. The flat or dished-head plates can result in small drops and foam. The open-pipe designs can lead to fluid short-circuiting or channeling. Nowadays, inlet devices have been developed such as inlet vane and inlet cyclone. 

Vane Inlet are used For applications of inlet momentum typically less than 9 kPa, a vane inlet can be used. Because the area of the vane inlet is several times larger than the inlet nozzle, the fluid velocities are much smaller, allowing for gas/liquid separation as well as smooth entry into the vessel.

The inlet cyclone can be used for inlet momentums factor of 10 higher than pipe inlets. Typically, pipe inlets are used for momentums less than 1,000 Pa. Inlet cyclones have been used successfully to 65,000 Pa.  As the throughput increase, a cyclone cluster may be considered to increase vessel capacity. The other cyclone has stationary turbine blades used to provide spin. This has the advantage of lowering the shear on the fluids. Lower shear results in less mist generation and droplet shearing. The cyclonic-type inlet device is good to diffuse the momentum of the incoming feed stream and allows for the removal of any bulk liquids and solids that may be present. The cyclonic inlet device is designed such that it can operate at both high and low gas/oil ratios without the possibility of gas blow-by and excessive liquid re-entrainment into the gas phase.

Gas Coalescing Filter Elements

NORDEN large group of gas coalescing elements are designed to coalesce and remove sub-micronic particles, low surface tension aerosols, and other fine mists from air or gas streams. With absolute ratings down to 0.3 micron, NORDEN gas coalescing filter elements are laboratory tested giving our clients the comfort they have come to expect in NORDEN reliability.

Rectangular Tanks

These tanks are designed with heavy walls for long service under severe conditions.  Straight sides allow maximum use of space. 

NORDEN rectangular tanks are design by Roarks’ formula and ASME by API verification for some items; we had references especially in offshore facilities.


  • Fully prefabricated for easy transport, storage and installation
  • Manufactured from 5 mm thick steel sheets.
  • Hot dip galvanised fasteners provided as standard. (Stainless steel or Molybond available on request)
  • Flat top steel roof
  • Bolt together, "stripseal" design for easy installation
  • Capacities from 2.4 to 1235 kilolitres
  • Complies with relevant codes under international Standards
  • Compacted gravel, steel decking or reinforced concrete slab


  • External ladders with extended handrails, platforms and safety cages to conform to standard
  • 600mm, 750mm and 900mm square manholes
  • Water level indicators
  • Roof vents
  • Anti vortex outlets
  • Pump suction tanks
  • Overflow to drainage
  • Scour-washout sump
  • Pipe work and connections
Gas Cyclotube Separators

NORDEN vertical tube separation system has proven to yield the highest efficiencies of any mechanical or non-disposable separation device. NORDEN cyclotubes are used in production as initial liquid separators, on gas coalescer and filter separator inlets as bulk liquid knockouts, as multistage compression separators, process liquid reclaimers downstream of contact towers, and in many other critical locations. Units are available with or without slug capacity, in vertical or horizontal configurations and in diameter sizes ranging from 8" through 120". Designs in all major design codes and certifications are available.

Cyclonic separator is a high-efficiency filtration system. It is able to effectively remove large amounts of solid and liquid particles from a gas stream at a relatively low pressure.  It also works effectively at extremely high pressures, especially when used to filter viscous impurities or other wax-like particles. With its capability to withstand a wide range of pressure differences, it offers the benefit of a low maintenance cost.

The solid/liquid impurities collected inside shall be periodically blown away to maintain stable equipment efficiency (Not necessary to replace filter element).

Design features:

Compared with traditional cyclone separator, our efficient cyclone separating system has the following design advantages: Special gas flow splitting design, The core of cyclone separator is a group of coils. In traditional design, single coil normally generates uneven cyclone distribution which affects integral separating effect., Our solution is to adopt circular coils distribution design. The best circular distribution structure is a closed loop and gas flows into it from middle part and thus is evenly distributed.


A Very effective method to reduce flow turbulence is installation a liquid distribution baffle. Which is a perforated plate designed with a certain open area to suit the given process conditions and vessel lay-out. In order to achieve an efficient gas/liquid and liquid/liquid separation in horizontal vessels it is important to have a quiescent flow regime along the vessel length. Otherwise fluids can shortcut through the vessel and the actual residence time for separation will be much shorter than with a perfect distributed flow. A quiescent flow regime is achieved by using perforated baffles. It has been demonstrated in tests and CFD models and, more importantly, in the field that without these internals the separation process can be adversely affected.

 Perforated Distribution Baffles are fitted downstream of the inlet device in the separator. The bulk liquids from the inlet device fall under gravity into the inlet processing zone, which is bounded by the Perforated Distribution Baffle. Intended to distribute the liquid flow evenly over the cross-section, prior to entry into the liquid/liquid separation region, this baffle plays an important role in maximizing the liquid/liquid separation. A Double Perforated Distribution Baffle assembly is often fitted downstream of the inlet device in a three-phase separator (or, sometimes, in a two-phase liquid/liquid separator). In contrast, only a Single Perforated Distribution Baffle will normally be required in a two-phase (gas/liquid) separator.

Advantages of Perforated Distribution Baffles:Distribute and calm the fluids, Handle slugs and surges, Enhance interface level control, Provide minimal pressure drop, Enhance gas distribution on any downstream equipment, Reduce or eliminate re-entrainment of liquid from the liquid surface, Increase gas/liquid separation efficiency, Enhance liquid distribution on downstream equipment, Reduce turbulence and re-circulation within the liquid section, promoting gravity separation, Increase liquid / liquid separation efficiency, Wide operational range - typically, providing 100% turndown, Easy to install in both new and existing separators, No moving parts, so no maintenance (for clean duties) and Reduce surface waves and sloshing effects.


Gas Filter Elements

NORDEN gas filters both filter and/or coalesce harmful solid and liquid particulates and permanently remove them from a gas stream. NORDEN gas filter elements are available a large variety of configurations of both depth and pleated style technologies. This wide range of medias allow our clients to ensure chemical compatibility as well as optimal performance. 

Pleated Style Filter Elements:

NORDEN pleated style gas filter cartridges are high surface area high efficiency filter elements specifically designed for the removal of contaminants in critical gas applications. They are available in various grades of absolute rated high performance medias with hardware customizable to suit your application.

Depth Style Filter Elements:

NORDEN depth style filter elements are specifically designed for gas filtration and filter coalescing. Through the use of a variety of highly compatible medias in a varying scale of fiber diameters, our graded density depth style designs provide the optimum combination of solid contaminant holding capability and liquid particle coalescing capability.


Pig Launcher & Receivers

Pig Launcher & Receivers

NORDEN designs and manufactures Launchers and Receivers for off-shore and onshore projects according to pipeline and vessel design codes including NACE, ASME VIII, BS 5500 and ASME B31.3, B31.4, B31.8. Our capacity ranges from 6” NS to 56” NS, ANSI Ratings 150# to 2500# and API, using regular carbon steel, or with different cladding and alloy steel materials. We’ve in-house engineering, manufacturing and testing capacity to produce launching and receiving systems to meet specific requirements of clients.

Pigging in the maintenance of pipelines refers to the practice of using pipeline inspection gauges or 'pigs' to perform various operations on a pipeline without stopping the flow of the product in the pipeline. Pigs get their name from the squealing sound they make while traveling through a pipeline. These operations include but are not limited to cleaning and inspection of the pipeline. This is accomplished by inserting the pig into a Pig Launcher - a funnel shaped Y section in the pipeline. The launcher is then closed and the pressure of the product in the pipeline is used to push it along down the pipe until it reaches the receiving trap - the 'pig catcher'.

Advantages of Pig Launcher/ Receiver

A major advantage of piggable systems is the potential resulting product savings. At the end of each product transfer, it is possible to clear out the entire line contents with the pig, either forwards towards the receipt point, or backwards to the source tank. There is no requirement for extensive line flushing.

Without the need for line flushing, pigging offers the additional advantage of a much more rapid and reliable product changeover. Product sampling at the receipt point becomes faster because the interface between products is very clear, and the old method of checking at intervals, until the product is on-specification, is considerably shortened.

Dry Gas Filters


NORDEN dry gas filters are designed to handle a variety of solid and semisolid particle removal applications. Standard design includes NORDEN Quick Opening Closure and z-bar 4 point element supports. Dry gas filters add the flexibility of using depth fiberglass, depth polyester surface, and rolled fiberglass filter elements to yield optimum economics and maximum performance under almost any service condition. Design is available in all major codes and certifications. Sizes range from 6" through 120" diameter in vertical and horizontal configurations.

For dry gas systems in need of cleaning, the NORDEN GAS DRY FILTER provides efficient removal of solid particulates down to 1 micron in size. The conventional forward-flow Dry Filter employs fiberglass filter elements, which are manufactured by NORDEN Company. These units can be configured horizontally or vertically. An optional feature on the dry filter units is a self-cleaning manifold, which allows a back-flow stream to clean the filter elements while allowing the unit to continue operation in full service. All NORDEN equipment is designed and fabricated by NORDEN Company alone, allowing us to guarantee timely and dependable service to our customers.


Filter Separators are available with a choice of filter element sizes and micron removal ratings.  Peak performance is 99.9% removal of solid particles 3 microns and larger.  Over 99.5% of all solid particles 0.5 to 3 microns in size are removed.  Pressure drop with new/clean/dry filter elements is typically 2 PSI at maximum flow conditions.  However, this is not a limitation.  Lower or higher pressure drop designs are available, dependent on customer requirements.  Filter element differential collapse pressure is 35 PSI. 


The primary (inlet) chamber allows for placement of the inlet nozzle vertically or horizontally on the Horizontal Dry Gas Filters separator, and at any point radially on the Vertical Dry Gas Filters separator.  Outlet nozzles are typically in the downstream head for Horizontal Dry Gas Filters designs, and in any radial direction for the Vertical Dry Gas Filters design. The Vertical Dry Gas Filters design will have the inlet nozzle in the upper half of the vessel, and the outlet nozzle will be in the lower half. For vessels with diameters 30" and larger, a reduced size closure may be provided.  Filter elements diameters can vary from 2" to 6", and from 18" to 72" in length.  Drain nozzles (if provided) are intended for use during initial hydrotest or subsequent cleaning.   Horizontal Dry Gas Filters designs are supported by integral saddles, and Vertical Dry Gas Filters designs may have either skirts or support legs.

Plate Pack Coalescers

NORDEN's Plate Pack Coalescer are used in the liquid section of a separator or scrubber to optimize the degree of liquid / liquid separation and its base is on the fact that the flow through the narrowly spaced plates is laminar, so the distance the dispersed phases have to travel to the interface is greatly reduced.

The liquid/liquid separation process is gravity driven. As a result, additional separation aids are often required to meet or increase the separation efficiency, allowing increased throughput, or offering an opportunity to reduce the size and weight of the vessel. Many three-phase (gas/liquid/liquid) or two-phase (liquid/liquid) separators therefore incorporate a Plate Pack Coalescer to achieve these objectives.

Plate Pack Coalescers contain numerous parallel plates at a fixed angle, the angle dependents on the operational duty, the process fluids, and whether solids are present. Due to the fact that the flow between the plates lies in the laminar regime, smaller droplets can be separated than would be achieved by gravity alone. Furthermore, since the distance the dispersed phases have to travel to the plate surfaces is small, the residence times required for effective separation and, consequently, the vessel size, can be reduced, for a similar efficiency to that obtained with a gravity-settlement system. When Plate Pack Coalescers are installed with a well-designed baffling system, they will have dampening capabilities, enabling their use to counter surface waves in separation equipment. So, they are often employed on Floating Production Units (FPUs).

Advantages of a Plate Pack Coalescer: Increases liquid/liquid separation efficiency, Minimises the vessel size on a new build project (reducing CAPEX), Allows a greater fluid throughput for a set vessel size, on a revamp project, Increases separation efficiency for a set vessel size, on a revamp project, Wide operational range - typically, providing 100% turndown, Suitable for modular or framed assembly, Easy to install in both new and existing separators, Includes no moving parts so no maintenance is needed (for clean duties), Reduces surface waves and sloshing effects.

Liquid Filter Elements

NORDEN liquid filter elements provide final filtering solutions for countless of industries and applications. Our liquid filtering products range from pleated, melt blown and resin bonded technologies, to activated carbon filters, metallic filters and many more. If you find that the filter style you are searching for is not contained within our site, please contact NORDEN or an authorized NORDEN distributor for verification, as many of our products are unlisted.

Pleated Style Filter Elements:

NORDEN pleated style liquid filter cartridges are high surface area high efficiency filter elements specifically designed for the removal of contaminants in critical gas applications. They are available in various grades of absolute rated high performance Medias with hardware customizable to suit your application.

Depth Style Filter Elements:

NORDEN depth style liquid filter elements are carefully designed for the removal of contaminants from a liquid stream. Through the use of a variety of highly compatible medias in a varying scale of fiber diameters, our graded density depth style designs provide the optimum combination of flow characteristics and solid contaminant holding capability.

Stone(Sand) Trap

NORDEN is leading manufacturer, supplier and exporter of Sand (Stone) Trap: Sand separators are an integral part in protecting downstream production equipment from well-formation sand and/or frac sand.  From 6"O.D. to 40"I.D. L-Type or our low profile high volume spherical design. 2,000 psig - 10,000 psig (206 bar to 689 bar). Our sand traps are designed for stationary applications and/or mounted on transportable L-shape type skids.

 Sand Separators Operation

Our sand traps operate vertically and use gravity, not centrifugal force, to separate sand from the flow. As the flow enters the sand trap, it is radically slowed and the direction changed 90 degrees by the stinger-diverter. This allows the sand to separate from the gas and liquids. Sand falls to the bottom of the trap and is kept there by a system of proprietary baffles. The baffles allow gas and liquids to move up and out while keeping the sand separate. Sand is removed by opening one of the two sand discharge ports during operation; shut-in is not required if one of the sand outs clogs.

We offer a 5800 psi version of our sand separator mated to a heavy-duty dual-axle trailer. It features hydraulic lift/lower capability for fast and easy set up. This design allows one man using a pickup truck to pull, position, and rig up. Well-suited for fast-paced flowback and frac cleanup.

Most of our sand traps are NACE certified right out of fabrication and can be used for sweet or sour service. For instance, all our 5800# psi sand traps are NACE certified. Our sand traps are ASME coded and registered with the National Board.

Gas Coalescers

 NORDEN gas coalescers are designed for liquid mist and aerosol removal. Typical coalescer applications include desiccant bed protection, compressor lube oil discharge removal, feed gas filtration, process liquid reclaiming, and general low surface tension mist removal. Standard design includes filter elements, NORDEN full diameter quick opening closure, stilling screen and outlet baffle. Units are designed and constructed in accordance with all major design codes.

Gas-liquid filter separators 

Gas-liquid filter separators are designed for the removal of liquids and solids from pressurised gas.The GC series filter separators are provided with a two-stage filtration and separation system: 1-A baffle system for the removal of slugs, large droplets and large solids particles. 2-A filter/coalescer system for the removal of fine solids particles and droplets. 

Baffle plate separation 

Removal of large droplets. Slugs of liquid and course solids particles is accomplished by providing obstacles in the form of baffle plates in the gas stream entering the filter separator. The density of liquid droplets and solids particles is more than 25 times higher than the density of compressed gas. Baffle plates create sudden turns in the gas flow direction. Due to their momentum droplets and particles are propelled from the gas stream and collide with the baffle plates. The droplets coalesce on the baffle plates to form a liquid film and the liquid film on the baffle plates captures solids particles. The film flows downwards and the liquid falls into the flow-free collecting area, carrying the separated solids particles.

Filter/coalescer system 

After passing through the baffle system the gas flows through the coalescers from inside to outside. Due to the increasing diameter the flow velocity is reduced while the gas moves through the coalescing layers. This enhances the growth of the droplets and provides the possibility of droplet settling under gravity.
The coalescer element is provided with a pleated filtration section for the efficient removal of solids particles. The filtration layer also prevents fouling of the coalescing layers which cases reduced separating efficiency. The pleated filtration stage offers an extended surface area for a good solids holding capability.

Sand Jetting System

In cases where sand or solids deposition in either vertical or horizontal vessels is expected jetting systems can be installed. Sand jetting systems fluidize solids with pressurized water introduced through spray nozzles. The solids are then discharged through sand drains which are located down the length of the vessel.

NORDEN sand jetting system is a sand conveying and removing device that removes sand and other solids from a production separator on either a continuous or batch basis. The modular system can be retrofitted into existing separators as well as be incorporated into new-build plants. By using NORDEN system a three-phase separator converts into a true four-phase separator, or a two-phase separator converts into a true three-phase separator. The system has been developed for topside and subsea production separators. Irrespective of the amount of sand in the separator, the NORDEN system will not allow the discharged sand concentration to rise above a preset peak, thus trading operation time for higher availability and reliability.

 Principle of operation 

The NORDEN sand jetting system works continuously or batch-operating sand transport and will remove by creating a low-velocity flow that runs through the bottom of the separator through solids-conveyance nozzles which is called an eductor. That uses a small flow of high-pressure motive fluid to pump a higher-flow, lower-pressure fluid.

Quick Opening Closure

NORDEN is a world leader in the manufacture of quick opening closures and hundreds of our QOC closures are in operation now.

Quick opening closures are pressure retaining structures designed to provide access to pipelines and pressure vessels.

Our QOC closures provide safe and quick access to pipeline and pressure vessels. They are built to meet all required international design codes and can be used in horizontal, vertical, inclined or declined applications.

Approved Design

  • ASME VIII Div.1
  • ASME VIII Div. 2
  • PD5500


  • Rapid Opening Closure
  • Double Bolt Closure
  • Swing-Bolt Closure 
  • CAMLOCK Bolt Closure
  • Threaded Closure


NORDEN is leading manufacturer, supplier and exporter of Strainers that are used for filtration in liquid flow pipes. These Strainers are available in various sizes with different specifications. We supply these Strainers in various industries at competitive prices.  Strainers most important features are as follows: 

  • Sizes: 15mm - 500mm
  • Type: Y - T - Basket Type
  • Material: Cast Iron, Cast Carbon Steel, Stainless Steel and Mild Steel Fabricated Mesh
  • Stainless Steel 304 & 316 Ends
  • Flanged, Screwed.
  • 20, 40, 60, 80, 100, 150, 200, 325 and 400 mesh stainless steel screens
  • Suitable for liquid, gas or steam

Y-Strainers are typically used in applications where the amount of solids to be removed is small, and where frequent clean-out is not required. They are most often installed in gaseous services such as steam, air, nitrogen, natural gas, etc.  The compact, cylindrical shape of the Y-strainer is very strong and can readily accommodate the high pressures that are common in this type of service.  Pressures up to 420 bar are not unusual.  When steam is being handled, high temperature can be an additional complicating factor.  A steam pressure of almost 100 bar will often be found at temperatures of 540°C. A Y-strainer has the advantage of being able to be installed in either a horizontal or vertical position. NORDEN's Y Strainers are furnished with high quality stainless steel screens that are carefully fabricated to fit the strainer body perfectly. This, coupled with the precision machined screen seat on the body of the strainer, protects against any bypass.


Anchor Flange

NORDEN designs and manufactures various size types of ANCHOR FLANGES.


Anchor flanges are important elements in many thrust-control systems, especially those protecting pipeline pumping stations. Welded into the line and encased in concrete, they immobilize the pipe at predetermined locations and transfer built-up stresses to external structures. For example, in cross-county pipelines end forces of considerable magnitude are generated by internal pressure and temperature changes. A 24" O.D. x 0.594" wall pipe in a pipeline operating at 1100 psi and subjected to a 90° rise in metal temperature, for example, will develop total thrust of 1,000,000 lbs. Unless these forces are properly controlled, they can damage pumps, valves and other close-tolerance equipment. Anchor Flanges may be used to secure subsea piping and risers to platform structures.



Isolation Joint

NORDEN designs and manufactures different types of ISOLATION JOINTS:

  • IsoJoint For Superior Cathodic Protection
  • IsoJoint is a true monolithic isolating joint which effectively and efficiently stop short circuits and stray currents from damaging pipelines and equipment.
  • IsoJoint employs one or more, pre-assembled pressure seals and isolating ring.
  • Unlike isolating gasket kits, IsoJoint does not depend on an installer fitting gasket, sleeves and washers into a flange on location.
  • Any one of these parts could be damaged causing a complete breakdown of the isolated flange, thus loosing cathodic isolation.

Electrically Isolates Pipeline Sections
The Pipeline Insulating Joint (PIJ) is a high-resistance fitting used to electrically isolate sections of a pipeline to improve the effectiveness of cathodic protection systems and to reduce ground-loop currents. Unlike insulating flanges or flange kits that are field assembled and tested, the PIJ is factory assembled, electrically tested at five different stages of manufacturing, and hydrostatically tested. The PIJ is provided with extension nipples that match the pipeline wall and grade and are long enough to eliminate any possibility of thermal damage to the PIJ during field welding. The monolithic design of the PIJ results in a pipe fitting having high cyclic bending strength integrity. This aspect is particularly important for offshore pipeline riser applications where cyclic loading is common.

Design Specifications
Pipe Insulating Joints are designed in accordance with ASME Pressure Vessel Code, Section VIII, Division 1, unless another recognized code is specified. Each PIJ is designed to be at least as strong as a comparably rated pipeline when subjected to external loads.

The electrical resistance of the PIJ is at least 40 mega-ohms with 1000 VDC applied potential, and the maximum leakage current, with 2500 VAC (60 HZ) applied potential, is 5 mA. The dielectric strength (breakdown voltage) of the PIJ is designed to exceed 20,000 volts.

Grit Trap

NORDEN designs and manufactures high pressure Grit Traps. Grit traps are highly efficient, low energy mechanisms that are an essential first step in wastewater treatment. With their sloping sides and a specially designed, slow-rotating impeller, the grit trap provides maximum separation of heavy mineral solids (grit) while rejecting lighter organic solids, which remain in the wastewater flow. Removing these heavy solids protect the rest of the downstream processes from the adverse effects of grit. 

Contact Us

  • 385, River Oaks PKWY, APT 2093, San Jose , CA, USA
  • +1 713 364 6260