Kolkata · LNG & Cryogenic Service
Valves for LNG & Cryogenic Service — Kolkata
West Bengal's industrial belt spans Durgapur-Asansol with steel plants, coal mines, and Haldia Petrochem.
Extended-bonnet ball, gate, and globe valves for LNG, liquid nitrogen, liquid oxygen, and other cryogenic service — low-temperature impact tested materials.
BS 6364 (Cryogenic valves)ASME B16.34 Annex FAPI 6DEN 13942ASTM A350 LF2 / LF3
API 6D Certified
ASME B16.34
ISO 9001:2015
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LNG & Cryogenic Service Valves — Available in Kolkata
Cryogenic Ball Valve (Extended Bonnet)
Class 150 / 300 / 600 / 900Quarter-turn operation with extended bonnet to keep packing above cryogenic temperature; fire-safe in LNG service
Materials: A351 CF8M, A182 F316L, A350 LF2 (forged) — SS 316 stem and trim · Standards: BS 6364, API 6D, ASME B16.34, API 607
View Cryogenic Ball Valve (Extended Bonnet) options for Kolkata →Cryogenic Gate Valve (Extended Bonnet)
Class 150 / 300 / 600Full-bore, straight-through isolation for LNG storage vessel and pipeline isolation
Materials: A350 LF2 (forged), A351 CF3M (cast SS316L low carbon), A182 F316L · Standards: BS 6364, ASME B16.34, API 600
View Cryogenic Gate Valve (Extended Bonnet) options for Kolkata →Cryogenic Globe Valve (Extended Bonnet)
Class 150 / 300 / 600Flow control and throttling in LNG process and vent/flare systems
Materials: A350 LF2, A182 F316L, A351 CF3M · Standards: BS 6364, ASME B16.34
View Cryogenic Globe Valve (Extended Bonnet) options for Kolkata →Cryogenic Check Valve
Class 150 / 300Non-return service on LNG pump discharge and send-out systems
Materials: A350 LF2, A351 CF8M, F316L · Standards: BS 6364, API 594, ASME B16.34
View Cryogenic Check Valve options for Kolkata →LNG & Cryogenic Service Industry in Kolkata
West Bengal's industrial belt spans Durgapur-Asansol with steel plants, coal mines, and Haldia Petrochem.
Mining & MetalsPower GenerationJute & TextileShipbuilding
Critical Valve Requirements
Charpy V-notch impact testing at design temperature (−46°C to −196°C) per ASTM A370
Extended bonnet design to maintain stem packing above −20°C minimum
Cryogenic testing per BS 6364: gas bubble leak test at operating temperature
Materials: ASTM A350 LF2 (forged) or A351 CF8M/CF3M (cast) — not A216 WCB
Fire-safe design (API 607) for LNG and flammable cryogenic fluids
Full-bore design where pigging or slug control is required
Seat material rated for cryogenic temperature — PTFE (to −200°C) or PEEK
Delivery to Kolkata
Vajra Industrial Solutions offers delivery to Kolkata in 3–7 business days. Emergency dispatch available for plant shutdowns and critical site requirements.
Also serving: Durgapur Steel Plant, Haldia Port, Salt Lake, Asansol
FAQ — LNG & Cryogenic Service Valves in Kolkata
Do you supply lng & cryogenic service valves in Kolkata?
Yes. Vajra Industrial Solutions supplies Cryogenic Ball Valve (Extended Bonnet), Cryogenic Gate Valve (Extended Bonnet), Cryogenic Globe Valve (Extended Bonnet), Cryogenic Check Valve for lng & cryogenic service applications in Kolkata, West Bengal. West Bengal's industrial belt spans Durgapur-Asansol with steel plants, coal mines, and Haldia Petrochem. We offer delivery to Kolkata in 3–7 business days with full documentation and third-party inspection.
What certifications are required for lng & cryogenic service valves in Kolkata?
For lng & cryogenic service in Kolkata, the applicable standards are: BS 6364 (Cryogenic valves), ASME B16.34 Annex F, API 6D, EN 13942, ASTM A350 LF2 / LF3, ASTM A182 F316L, MSS SP-134. 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 lng & cryogenic service valves to Kolkata?
Standard stock sizes: delivery to Kolkata in 3–7 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 an extended bonnet on a cryogenic valve?
An extended bonnet (also called a top-entry or long-bonnet valve) has an elongated bonnet section that moves the stem packing away from the extremely cold process fluid. This prevents the packing material from being exposed to cryogenic temperature (where it would lose elasticity and leak), and prevents atmospheric moisture from freezing around the packing gland. The extension length is calculated based on the process temperature and the acceptable minimum packing temperature.
What ASTM material is used for cryogenic valves?
For LNG (−162°C) and liquid nitrogen (−196°C): ASTM A351 CF8M or CF3M (cast SS 316/316L) and ASTM A182 F316L (forged). For liquid CO₂ and −46°C service: ASTM A350 LF2 (forged low-temperature carbon steel), Charpy impact tested at −46°C. Standard A216 WCB carbon steel must never be used in cryogenic service below −29°C.
Other Application Guides for Kolkata
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LNG & Cryogenic Service Valves — Kolkata
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Standards
BS 6364 (Cryogenic valves)
ASME B16.34 Annex F
API 6D
EN 13942
ASTM A350 LF2 / LF3
ASTM A182 F316L
MSS SP-134
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