HomeLocationsPort HarcourtAir Separation Units (ASU)

Port Harcourt · Air Separation Units (ASU)

Valves for Air Separation Units (ASU) — Port Harcourt

Port Harcourt is the centre of Nigeria's oil and gas industry — Nigeria Liquefied Natural Gas (NLNG) at Bonny Island (6 LNG trains, 22 mtpa capacity) is Nigeria's flagship LNG facility, operated by Shell, TotalEnergies, Agip, and NNPC; Shell SPDC, TotalEnergies, Eni, and Chevron all operate major onshore and offshore production assets from PH, requiring API 6D ball valves, gate valves with NACE MR0175 sour service trim, and butterfly valves for produced water and gas processing systems; Vajra Industrial Solutions exports to PH-based EPC contractors and end-users with complete ISO 9001 documentation, country of origin certificates, and SON (Standards Organisation of Nigeria) compliance data sheets.

ASTM G93 oxygen-cleaned cryogenic extended-bonnet SS316L ball and gate valves for ASU liquid oxygen (LOX), liquid nitrogen (LIN), and liquid argon (LAR) production columns.

ASTM G93 (Oxygen Cleaning)EIGA Doc 13 (Oxygen Safety)BS 6364 (Cryogenic Valves)ASME B16.34ISO 21011 (Cryogenic Valves)
Get a Quote +91 9979774557WhatsApp Quote
API 6D Certified
ASME B16.34
ISO 9001:2015
24h Quote

Air Separation Units (ASU) Valves — Available in Port Harcourt

Cryogenic Ball Valve (LOX Service)

Class 150 / 300

LOX pump suction, LOX column draw, LOX product loading — extended bonnet for −183°C; ASTM G93 oxygen-cleaned

Materials: A182 F316L forged body; SS316L ball; PCTFE seats (oxygen-compatible); SS316L extended bonnet (350+ mm)  ·  Standards: BS 6364, ASTM G93, EIGA Doc 13, API 607 (fire-safe, oxygen-critical)
View Cryogenic Ball Valve (LOX Service) options for Port Harcourt →

Cryogenic Gate Valve (LIN/LAR)

Class 150 / 300

Liquid nitrogen and argon column isolation, product draw, and storage tank isolation; extended bonnet required

Materials: A182 F316L body and stem; SS316L gate and seats; extended bonnet per BS 6364  ·  Standards: BS 6364, ASME B16.34, ISO 21011
View Cryogenic Gate Valve (LIN/LAR) options for Port Harcourt →

Globe Valve (Control, Cryogenic)

Class 150 / 300

Oxygen pressure letdown and LIN flow control — precision control; SS316L body; no elastomer seats in oxygen service

Materials: A182 F316L body; SS316L trim; PCTFE or SS316 seat; oxygen-cleaned  ·  Standards: BS 6364, ASTM G93, ASME B16.34
View Globe Valve (Control, Cryogenic) options for Port Harcourt →

Check Valve (Cryogenic)

Class 150 / 300

LOX pump discharge check, back-flow prevention on product filling headers

Materials: A182 F316L body; SS316L disc and hinge pin; PCTFE seat ring; oxygen-cleaned  ·  Standards: BS 6364, API 594, ASTM G93
View Check Valve (Cryogenic) options for Port Harcourt →

Air Separation Units (ASU) Industry in Port Harcourt

Port Harcourt is the centre of Nigeria's oil and gas industry — Nigeria Liquefied Natural Gas (NLNG) at Bonny Island (6 LNG trains, 22 mtpa capacity) is Nigeria's flagship LNG facility, operated by Shell, TotalEnergies, Agip, and NNPC; Shell SPDC, TotalEnergies, Eni, and Chevron all operate major onshore and offshore production assets from PH, requiring API 6D ball valves, gate valves with NACE MR0175 sour service trim, and butterfly valves for produced water and gas processing systems; Vajra Industrial Solutions exports to PH-based EPC contractors and end-users with complete ISO 9001 documentation, country of origin certificates, and SON (Standards Organisation of Nigeria) compliance data sheets.

Oil & Gas ProductionLNG & PetrochemicalRefinery & DownstreamOffshore & FPSOEPC Contractors

Critical Valve Requirements

ASTM G93 / CGA G-4.1 oxygen cleaning — all valves for LOX/GOX service must be degreased with approved solvents, then passivated; verified by UV light and/or white glove test; sealed in nitrogen-purged bags until installation
EIGA Doc 13 (European Industrial Gases Association) — comprehensive oxygen safety standard; defines material compatibility, ignition mechanisms, and design requirements for oxygen valves
No PTFE in high-pressure oxygen service (> 30 bar GOX) — PTFE can ignite in high-velocity O₂; use PCTFE or metal-to-metal seats instead; PTFE acceptable for low-pressure (<30 bar) LOX
No brass, bronze, or copper alloys — acceptable for low-pressure oxygen, but ASU practice avoids them entirely due to particle contamination risk
Extended bonnet per BS 6364 — minimum 350 mm bonnet extension for valves below −29°C to keep packing above cryogenic zone
Impact testing — all cryogenic valve components must pass Charpy V-notch impact test at −196°C per ASTM A370

Why Port Harcourt's Oil & Gas Production Sector Needs Air Separation Units (ASU) Valves

Port Harcourt is the centre of Nigeria's oil and gas industry — Nigeria Liquefied Natural Gas (NLNG) at Bonny Island (6 LNG trains, 22 mtpa capacity) is Nigeria's flagship LNG facility, operated by Shell, TotalEnergies, Agip, and NNPC; Shell SPDC, TotalEnergies, Eni, and Chevron all operate major onshore and offshore production assets from PH, requiring API 6D ball valves, gate valves with NACE MR0175 sour service trim, and butterfly valves for produced water and gas processing systems; Vajra Industrial Solutions exports to PH-based EPC contractors and end-users with complete ISO 9001 documentation, country of origin certificates, and SON (Standards Organisation of Nigeria) compliance data sheets. Key facilities in the Port Harcourt area — including NLNG (Nigeria LNG) Bonny Island plant, Shell SPDC (Shell Petroleum Development Company) PH operations, TotalEnergies Akpo and Egina FPSO — rely on Cryogenic Ball Valve (LOX Service) for their oil & gas production operations. Vajra Industrial Solutions supplies Cryogenic Ball Valve (LOX Service), Cryogenic Gate Valve (LIN/LAR), Globe Valve (Control, Cryogenic), Check Valve (Cryogenic) for air separation units (asu) projects across Rivers State, with full ASTM G93 (Oxygen Cleaning) and EIGA Doc 13 (Oxygen Safety) compliance documentation — EN 10204 3.1 material test certificates, API 598 pressure test reports, and third-party inspection co-ordination available for every order.

Delivery to Port Harcourt

Vajra Industrial Solutions offers export documentation and delivery to Port Harcourt in 7–14 business days. Emergency dispatch available for plant shutdowns and critical site requirements.

Also serving: NLNG (Nigeria LNG) Bonny Island plant, Shell SPDC (Shell Petroleum Development Company) PH operations, TotalEnergies Akpo and Egina FPSO, Agip/Eni Port Harcourt, Notore Chemical Industries (fertiliser)

FAQ — Air Separation Units (ASU) Valves in Port Harcourt

Do you supply air separation units (asu) valves in Port Harcourt?
Yes. Vajra Industrial Solutions supplies Cryogenic Ball Valve (LOX Service), Cryogenic Gate Valve (LIN/LAR), Globe Valve (Control, Cryogenic), Check Valve (Cryogenic) for air separation units (asu) applications in Port Harcourt, Rivers State. Port Harcourt is the centre of Nigeria's oil and gas industry — Nigeria Liquefied Natural Gas (NLNG) at Bonny Island (6 LNG trains, 22 mtpa capacity) is Nigeria's flagship LNG facility, operated by Shell, TotalEnergies, Agip, and NNPC; Shell SPDC, TotalEnergies, Eni, and Chevron all operate major onshore and offshore production assets from PH, requiring API 6D ball valves, gate valves with NACE MR0175 sour service trim, and butterfly valves for produced water and gas processing systems; Vajra Industrial Solutions exports to PH-based EPC contractors and end-users with complete ISO 9001 documentation, country of origin certificates, and SON (Standards Organisation of Nigeria) compliance data sheets. We offer export documentation and delivery to Port Harcourt in 7–14 business days with full documentation and third-party inspection.
What certifications are required for air separation units (asu) valves in Port Harcourt?
For air separation units (asu) in Port Harcourt, the applicable standards are: ASTM G93 (Oxygen Cleaning), EIGA Doc 13 (Oxygen Safety), BS 6364 (Cryogenic Valves), ASME B16.34, ISO 21011 (Cryogenic Valves), CGA G-4.1 (O₂ Cleaning USA), API 598. All valves are supplied with full documentation including material test reports (EN 10204 3.1/3.2), pressure test certificates, and dimensional inspection reports. Third-party inspection (TPI) by EIL, Bureau Veritas, Lloyd's Register, or the client's nominated inspector can be arranged.
What is the delivery time for air separation units (asu) valves to Port Harcourt?
Standard stock sizes: export documentation and delivery to Port Harcourt in 7–14 business days. Custom sizes and special materials (Duplex, Hastelloy, P91): 4–8 weeks manufacturing lead time. Express dispatch available for urgent site requirements. Contact us at +91-9979774557 or sales@vajravyuh.com with your specification and required delivery date.
What is ASTM G93 oxygen cleaning and is it mandatory for all ASU valves?
ASTM G93 (Standard Practice for Cleaning Methods and Cleanliness Levels for Material and Equipment Used in Oxygen-Enriched Environments) defines the degreasing, rinsing, and verification process for components that will be in contact with oxygen. For LOX and GOX service in ASUs, ASTM G93 cleaning is mandatory — trace hydrocarbons or particles can ignite in an oxygen-rich environment. The process involves solvent degreasing (usually with non-flammable chlorinated solvents or approved alternatives), hot DI water rinse, oven drying, UV light inspection, white-glove testing, and sealing in nitrogen-purged polyethylene bags for shipment.
Why can't I use PTFE seats in high-pressure oxygen valves?
PTFE (polytetrafluoroethylene) is generally oxygen-compatible at low pressures and low flow velocities. However, above approximately 30 bar GOX, PTFE can ignite through frictional heating from high-velocity gas impingement or particle impact ignition — a mechanism unique to oxygen service. EIGA Doc 13 and CGA G-4.1 restrict PTFE in high-pressure oxygen to specific designs with defined velocity limits. PCTFE (polychlorotrifluoroethylene) is the standard alternative — it has a higher ignition temperature than PTFE and is the seat material of choice for high-pressure LOX and GOX valves above 30 bar.

Other Application Guides for Port Harcourt

Oil & Gas PipelinesPharmaceutical & Biotech (Cleanroom / Hygienic)LNG & Cryogenic ServiceWater Treatment & DesalinationRefinery & Petrochemical ProcessPower Generation (Thermal, Gas, Hydro)Marine & Offshore ServiceMining & Mineral ProcessingHVAC & Building ServicesChemical & Petrochemical ProcessingHygienic Food & Beverage ProcessingHydrogen & Clean Energy ServiceDesalination & High-Purity WaterPulp & Paper IndustryAmmonia & Fertiliser PlantsNuclear Power PlantsOffshore & Subsea ApplicationsCoke Oven & Steel PlantsEthylene Crackers & Olefin PlantsChlor-Alkali PlantsSugar & Ethanol PlantsGeothermal Power PlantsCompressed Gas & CNG SystemsBiogas & Biomass PlantsCarbon Capture & Storage (CCS)Fire Protection SystemsShipbuilding & Marine RepairDistrict Heating & Cooling SystemsPharmaceutical & Biotechnology PlantsGlass, Ceramics & Refractory IndustriesTextile & Dyeing Plants

Get a Quote

Air Separation Units (ASU) Valves — Port Harcourt

Send your specification — quote within 24 hours with full documentation.

Request a Quote sales@vajravyuh.com +91 9979774557

Standards

ASTM G93 (Oxygen Cleaning)
EIGA Doc 13 (Oxygen Safety)
BS 6364 (Cryogenic Valves)
ASME B16.34
ISO 21011 (Cryogenic Valves)
CGA G-4.1 (O₂ Cleaning USA)
API 598

Product Categories

Ball Valves Gate Valves Globe Valves Check Valves

All Valves for Port Harcourt

View all valve types →All application guides →