HomeLocationsTehranEthylene Crackers & Olefin Plants

Tehran · Ethylene Crackers & Olefin Plants

Valves for Ethylene Crackers & Olefin Plants — Tehran

Tehran is home to NIOC, NPC, and NIORDC — Iran's national oil, petrochemical, and refining organisations — plus major EPC contractors including MAPNA Group and IPC for power and petrochemical projects; Iran's massive South Pars gas condensate field operations and 10+ Mtpa petrochemical complex at Assaluyeh require continuous procurement of API 6D ball valves, gate valves, and globe valves; Vajra Industrial Solutions supplies API 6D Class 150–1500 ball valves, ASME B16.34 gate and globe valves, and butterfly valves to Iranian EPC contractors and trading companies with full ISO 9001 documentation and competitive international pricing.

WC9 and A217 high-temperature gate valves for pyrolysis furnace service, SS316L cryogenic extended-bonnet ball valves for cold-train separation, and API 526 PSVs for ethylene plants.

ASME B16.34API 600 (High-Temp Gate)API 6DAPI 526 (PSV)API 941 (Nelson Curves)
Get a Quote +91 9979774557WhatsApp Quote
API 6D Certified
ASME B16.34
ISO 9001:2015
24h Quote

Ethylene Crackers & Olefin Plants Valves — Available in Tehran

Gate Valve (A217 WC9)

Class 600 / 900

Pyrolysis furnace crossover and TLE (Transfer Line Exchanger) inlet isolation — 600–900°C service

Materials: A217 WC9 (2.25Cr-1Mo); A182 F22 forged for smaller sizes; Stellite 6 trim  ·  Standards: API 600, ASME B16.34, API 941 (Nelson curves for H₂ service)
View Gate Valve (A217 WC9) options for Tehran →

Cryogenic Ball Valve (SS316L)

Class 300 / 600

Demethaniser, deethaniser column overheads (−100°C to −165°C); ethylene/propylene refrigeration

Materials: A182 F316L forged body; PCTFE or PTFE seats rated to −196°C; extended bonnet per BS 6364  ·  Standards: BS 6364, API 607, API 6D
View Cryogenic Ball Valve (SS316L) options for Tehran →

Safety Relief Valve

Class 300 / 600 / 900

Cracked gas compressor, refrigeration system, depropaniser and product headers overpressure protection

Materials: A351 CF8M SS316 for cryogenic; A216 WCB for hot service; Stellite trim for high-cycle  ·  Standards: API 526, API 527, ASME Section VIII Div. 1
View Safety Relief Valve options for Tehran →

Globe Valve (Control)

Class 300 / 600

Dilution steam control, quench oil recirculation, and product rundown control

Materials: A216 WCB with SS316 trim; A217 WC9 for high-temperature steam service  ·  Standards: API 623, ASME B16.34, IEC 60534 (control valves)
View Globe Valve (Control) options for Tehran →

Ethylene Crackers & Olefin Plants Industry in Tehran

Tehran is home to NIOC, NPC, and NIORDC — Iran's national oil, petrochemical, and refining organisations — plus major EPC contractors including MAPNA Group and IPC for power and petrochemical projects; Iran's massive South Pars gas condensate field operations and 10+ Mtpa petrochemical complex at Assaluyeh require continuous procurement of API 6D ball valves, gate valves, and globe valves; Vajra Industrial Solutions supplies API 6D Class 150–1500 ball valves, ASME B16.34 gate and globe valves, and butterfly valves to Iranian EPC contractors and trading companies with full ISO 9001 documentation and competitive international pricing.

Oil & Gas (NIOC)Petrochemical (NPC)Refining (NIORDC)Power GenerationChemical & Fertilizer

Critical Valve Requirements

Furnace crossover and TLE outlet valves — WC9 or WC11 material required above 550°C; confirm Nelson curve compliance per API 941 for H₂ service
Cold train valves below −29°C — extended bonnet (minimum 350 mm bonnet extension per BS 6364) to prevent ice formation at packing; cryogenic-grade PTFE/PCTFE seats
Diene and acetylene service — no copper alloys (acetylene forms explosive copper acetylide); SS316 or carbon steel only
Dilution steam — IBR certification for all steam header valves in Indian plants
API 526 PSVs must be installed without block valves unless full-bore, car-sealed-open alternative is provided per API 520
Anti-surge valves on cracked gas compressors — fail-open design; fast-acting actuator (< 2 seconds full stroke)

Why Tehran's Oil & Gas (NIOC) Sector Needs Ethylene Crackers & Olefin Plants Valves

Tehran is home to NIOC, NPC, and NIORDC — Iran's national oil, petrochemical, and refining organisations — plus major EPC contractors including MAPNA Group and IPC for power and petrochemical projects; Iran's massive South Pars gas condensate field operations and 10+ Mtpa petrochemical complex at Assaluyeh require continuous procurement of API 6D ball valves, gate valves, and globe valves; Vajra Industrial Solutions supplies API 6D Class 150–1500 ball valves, ASME B16.34 gate and globe valves, and butterfly valves to Iranian EPC contractors and trading companies with full ISO 9001 documentation and competitive international pricing. Key facilities in the Tehran area — including NIOC (National Iranian Oil Company) HQ, NPC (National Petrochemical Company) procurement, Tehran Refinery (NIORDC) — rely on Gate Valve (A217 WC9) for their oil & gas (nioc) operations. Vajra Industrial Solutions supplies Gate Valve (A217 WC9), Cryogenic Ball Valve (SS316L), Safety Relief Valve, Globe Valve (Control) for ethylene crackers & olefin plants projects across Tehran Province, with full ASME B16.34 and API 600 (High-Temp Gate) 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 Tehran

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

Also serving: NIOC (National Iranian Oil Company) HQ, NPC (National Petrochemical Company) procurement, Tehran Refinery (NIORDC), MAPNA Group power EPC, IDRO (Industrial Development & Renovation Organisation)

FAQ — Ethylene Crackers & Olefin Plants Valves in Tehran

Do you supply ethylene crackers & olefin plants valves in Tehran?
Yes. Vajra Industrial Solutions supplies Gate Valve (A217 WC9), Cryogenic Ball Valve (SS316L), Safety Relief Valve, Globe Valve (Control) for ethylene crackers & olefin plants applications in Tehran, Tehran Province. Tehran is home to NIOC, NPC, and NIORDC — Iran's national oil, petrochemical, and refining organisations — plus major EPC contractors including MAPNA Group and IPC for power and petrochemical projects; Iran's massive South Pars gas condensate field operations and 10+ Mtpa petrochemical complex at Assaluyeh require continuous procurement of API 6D ball valves, gate valves, and globe valves; Vajra Industrial Solutions supplies API 6D Class 150–1500 ball valves, ASME B16.34 gate and globe valves, and butterfly valves to Iranian EPC contractors and trading companies with full ISO 9001 documentation and competitive international pricing. We offer export documentation and delivery to Tehran in 7–14 business days with full documentation and third-party inspection.
What certifications are required for ethylene crackers & olefin plants valves in Tehran?
For ethylene crackers & olefin plants in Tehran, the applicable standards are: ASME B16.34, API 600 (High-Temp Gate), API 6D, API 526 (PSV), API 941 (Nelson Curves), NACE MR0103, IBR (Steam). 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 ethylene crackers & olefin plants valves to Tehran?
Standard stock sizes: export documentation and delivery to Tehran 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 valve material should I use for ethylene cracker furnace crossover?
The pyrolysis furnace crossover operates at 600–900°C — well above the carbon steel Nelson curve for hydrogen service. Specify A217 WC9 (2.25Cr-1Mo) gate valves for Class 600–900 service at these temperatures. For smaller bore instrument connections at the furnace, A182 F22 forged (same Cr-Mo alloy) is used. Confirm compliance with API 941 Nelson curves: WC9 is acceptable up to 600°C at 70 bar H₂ partial pressure without creep concerns.
What is a BS 6364 extended bonnet and when is it required?
BS 6364 is the British Standard for Valves for Cryogenic Service. It specifies that valves handling fluids below −29°C must have an extended bonnet — a lengthened bonnet neck (typically 350–600 mm) that keeps the gland packing and actuator above the cryogenic zone. Without this extension, ice forms at the gland seal, causing leakage and potential valve seizure. Extended bonnets are mandatory for liquid ethylene (−104°C), liquid propylene (−47°C), LNG (−162°C), and liquid nitrogen (−196°C) service.

Other Application Guides for Tehran

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 PlantsChlor-Alkali PlantsSugar & Ethanol PlantsGeothermal Power PlantsAir Separation Units (ASU)Compressed 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

Ethylene Crackers & Olefin Plants Valves — Tehran

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

Request a Quote sales@vajravyuh.com +91 9979774557

Standards

ASME B16.34
API 600 (High-Temp Gate)
API 6D
API 526 (PSV)
API 941 (Nelson Curves)
NACE MR0103
IBR (Steam)

Product Categories

Ball Valves Gate Valves Globe Valves Safety & Relief Valves

All Valves for Tehran

View all valve types →All application guides →