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Valves for LNG & Cryogenic Service — Dibrugarh

Dibrugarh is the heart of Assam's oil belt — OIL India's Duliajan headquarters, Digboi (Asia's oldest refinery) and NRL Numaligarh all operate here.

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
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LNG & Cryogenic Service Valves — Available in Dibrugarh

Cryogenic Ball Valve (Extended Bonnet)

Class 150 / 300 / 600 / 900

Quarter-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
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Cryogenic Gate Valve (Extended Bonnet)

Class 150 / 300 / 600

Full-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
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Cryogenic Globe Valve (Extended Bonnet)

Class 150 / 300 / 600

Flow control and throttling in LNG process and vent/flare systems

Materials: A350 LF2, A182 F316L, A351 CF3M  ·  Standards: BS 6364, ASME B16.34
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Cryogenic Check Valve

Class 150 / 300

Non-return service on LNG pump discharge and send-out systems

Materials: A350 LF2, A351 CF8M, F316L  ·  Standards: BS 6364, API 594, ASME B16.34
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LNG & Cryogenic Service Industry in Dibrugarh

Dibrugarh is the heart of Assam's oil belt — OIL India's Duliajan headquarters, Digboi (Asia's oldest refinery) and NRL Numaligarh all operate here.

Oil & Gas (Assam Fields)Tea ProcessingPower Generation

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

Why Dibrugarh's Oil & Gas (Assam Fields) Sector Needs LNG & Cryogenic Service Valves

Dibrugarh is the heart of Assam's oil belt — OIL India's Duliajan headquarters, Digboi (Asia's oldest refinery) and NRL Numaligarh all operate here. Key facilities in the Dibrugarh area — including OIL Duliajan Fields, ONGC Assam Asset, Digboi Refinery (Asia's oldest) — rely on Cryogenic Ball Valve (Extended Bonnet) for their oil & gas (assam fields) operations. 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 projects across Assam, with full BS 6364 (Cryogenic valves) and ASME B16.34 Annex F 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 Dibrugarh

Vajra Industrial Solutions offers delivery to Dibrugarh in 3–7 business days. Emergency dispatch available for plant shutdowns and critical site requirements.

Also serving: OIL Duliajan Fields, ONGC Assam Asset, Digboi Refinery (Asia's oldest), Numaligarh Refinery

FAQ — LNG & Cryogenic Service Valves in Dibrugarh

Do you supply lng & cryogenic service valves in Dibrugarh?
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 Dibrugarh, Assam. Dibrugarh is the heart of Assam's oil belt — OIL India's Duliajan headquarters, Digboi (Asia's oldest refinery) and NRL Numaligarh all operate here. We offer delivery to Dibrugarh in 3–7 business days with full documentation and third-party inspection.
What certifications are required for lng & cryogenic service valves in Dibrugarh?
For lng & cryogenic service in Dibrugarh, 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 Dibrugarh?
Standard stock sizes: delivery to Dibrugarh 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 Dibrugarh

Oil & Gas PipelinesPharmaceutical & Biotech (Cleanroom / Hygienic)Water 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 Industry

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LNG & Cryogenic Service Valves — Dibrugarh

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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

Product Categories

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