Piping Class Reference

Piping Class E1A Valve Specification

Piping Class E1A covers cryogenic service valves in austenitic stainless steel for LNG, liquid nitrogen, LOX (liquid oxygen), and liquid argon service. All valves must meet BS 6364 cryogenic test requirements. Extended bonnet design is mandatory to protect stem packing from cryogenic temperatures.

ASME Class

ASME Class 150 (Cryogenic)

Design Pressure

Up to 40 bar

Design Temperature

-196°C to +65°C

Body Material

Austenitic SS ASTM

Design Parameters — E1A

Fluid Service

Cryogenic — LNG, Liquid Nitrogen, LOX Service to -196°C

Design Pressure

Up to 40 bar

Design Temperature

-196°C to +65°C

Corrosion Allowance

Nil

Body Material

Austenitic SS ASTM A351 CF8M / A182 F316L

Industries

LNG import/export terminals, Industrial gas (Air Products, Linde, Air Liquide)

Reference Only — Project-Specific Verification RequiredThis piping class specification is a general industry reference. Actual piping class definitions vary by project and company standard (owner specifications). Always verify material, rating, and end-connection requirements against your project's official piping class datasheet or PMS (Piping Material Specification). Vajra Industrial Solutions accepts no liability for specification decisions based on this reference.

Valve Schedule — Piping Class E1A

Valve Type	Rating	End Connection	Body Material	Trim	Seat/Sealing	Notes
Cryogenic Ball Valve	Class 150–300	RF or BW	A351 CF8M / F316L	SS 316L	PTFE / PCTFE	BS 6364 cryogenic test, extended bonnet min 150mm
Cryogenic Gate Valve	Class 150–300	RF or BW	A351 CF8M / F316L	SS 316L	SS 316L metal	Extended bonnet, OS&Y, low-temp tested
Cryogenic Globe Valve	Class 150–300	RF or BW	A351 CF8M / F316L	SS 316L	PTFE / metal	Extended bonnet, OS&Y
Cryogenic Check Valve	Class 150–300	RF or BW	CF8M	SS 316L	SS 316L / PTFE	Lift or swing, cryogenic rated
Safety Relief Valve (LNG)	ASME VIII	Flanged	SS 316L	SS 316L	PTFE / metal	Cryogenic SRV — ASME stamped, low-temperature rated

Typical Industries — E1A

LNG import/export terminalsIndustrial gas (Air Products, Linde, Air Liquide)Liquid oxygen/nitrogen storageLNG bunkering

Standard Certifications for E1A Valves

ASME B16.34API 6DAPI 607 (Fire Safe)API 608EN 10204 3.1ISO 9001:2015IBR (Indian Boiler)API 598 Testing

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Related Piping Classes

B1A

ASME Class 150

Stainless Steel — Chemical, Corrosive, Pharmaceutical Service

B2A

ASME Class 300

Stainless Steel Medium Pressure — Corrosive Process to 51 bar

All Piping Classes

A1A — ASME Class 150 A2A — ASME Class 300 A3A — ASME Class 600 B1A — ASME Class 150 B2A — ASME Class 300 C1A — ASME Class 150 D1A — ASME Class 150

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