What is the design pressure for piping class E2A valves?

Piping class E2A is rated for a design pressure of 51.1 bar (741 psi) at 38°C (100°F) at a design temperature of -101°C to +120°C (-150°F to +248°F). Fluid service: Cryogenic Service - LNG / LOX / LIN, -46°C to -101°C, Class 300. Corrosion allowance: 0mm (cryogenic, non-corrosive - dry service).

What valve types are specified in piping class E2A?

Piping class E2A includes: Gate Valve (Cryogenic), Ball Valve (Cryogenic), Globe Valve (Cryogenic), Check Valve (Cryogenic). All valves are to ASME Class 300 rating with Carbon Steel ASTM A352 LCC (Extended Bonnet, Cryogenic Tested) / A351 CF8M SS316 body material.

What body material is required for piping class E2A?

The body material for piping class E2A is Carbon Steel ASTM A352 LCC (Extended Bonnet, Cryogenic Tested) / A351 CF8M SS316. This is selected for Cryogenic Service - LNG / LOX / LIN, -46°C to -101°C, Class 300 service at 51.1 bar (741 psi) at 38°C (100°F) and -101°C to +120°C (-150°F to +248°F).

Which industries use piping class E2A?

Piping class E2A is typically used in: LNG Liquefaction and Regasification Plants, Air Separation Units (ASU), Industrial Gas Storage (N2, O2, Ar), LNG Bunkering Facilities, Cold Storage Refrigeration Plants. Vajra Industrial Solutions supplies all valve types to E2A specification with full EN 10204 3.1 material certificates, hydrostatic test certificates, and dimensional inspection reports.

Home Piping ClassesE2A

Piping Class Reference

Piping Class E2A Valve Specification

Piping Class E2A covers Class 300 cryogenic service for LNG (liquid natural gas), liquid nitrogen (LIN), liquid oxygen (LOX), and liquid argon (LAR) in the range -46°C to -101°C. A352 LCC retains adequate impact toughness at -101°C (minimum 27J Charpy per ASME B31.3) and is the most economical cryogenic material. Extended bonnets per BS 6364 are mandatory to keep stem packing above the cold zone. All valves are cold-shock tested at -196°C (liquid nitrogen) prior to delivery. Vajra Industrial Solutions supplies BS 6364 and ISO 21011 compliant cryogenic gate, globe, ball, and check valves with extended bonnets, PCTFE seats (for -196°C rated valves), documented cold-shock test reports, and Charpy impact certificates.

ASME Class

ASME Class 300

Design Pressure

51.1 bar (741 psi) at 38°C (100°F)

Design Temperature

-101°C to +120°C (-150°F to +248°F)

Body Material

Carbon Steel ASTM

Design Parameters - E2A

Fluid Service

Cryogenic Service - LNG / LOX / LIN, -46°C to -101°C, Class 300

Design Pressure

51.1 bar (741 psi) at 38°C (100°F)

Design Temperature

-101°C to +120°C (-150°F to +248°F)

Corrosion Allowance

0mm (cryogenic, non-corrosive - dry service)

Body Material

Carbon Steel ASTM A352 LCC (Extended Bonnet, Cryogenic Tested) / A351 CF8M SS316

Industries

LNG Liquefaction and Regasification Plants, Air Separation Units (ASU)

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 E2A

Valve Type	Rating	End Connection	Body Material	Trim	Seat/Sealing	Notes
Gate Valve (Cryogenic)	Class 300	BW (ASME B16.25) or RF Flanged (ASME B16.5)	A352 LCC (Extended Bonnet 300mm)	SS316 / Trim 12	SS316 HF + PTFE seat ring	BS 6364, cold-shock tested; extended bonnet mandatory; body vent
Ball Valve (Cryogenic)	Class 300	BW or RF Flanged	A352 LCC or CF8M SS316 (Extended Bonnet)	SS316 + PCTFE seats	PCTFE (cryogenic PTFE equivalent)	BS 6364 / ISO 21011; body vent hole; PCTFE seats for -196°C
Globe Valve (Cryogenic)	Class 300	BW or RF Flanged	A352 LCC (Extended Bonnet)	SS316 HF	SS316 HF	Used for flow control in cryogenic circuits; extended bonnet 200-400mm
Check Valve (Cryogenic)	Class 300	BW or RF Flanged	A352 LCC or CF8M	SS316	SS316 HF	Tilting disc or lift type; low temperature impact tested

Typical Industries - E2A

LNG Liquefaction and Regasification PlantsAir Separation Units (ASU)Industrial Gas Storage (N2, O2, Ar)LNG Bunkering FacilitiesCold Storage Refrigeration Plants

Standard Certifications for E2A Valves

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

Related Piping Classes

A1A

ASME Class 150

General Service - Water, Air, Steam up to 16 bar

E1A

ASME Class 150 (Cryogenic)

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

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 E1A - ASME Class 150 (Cryogenic)A4A - ASME Class 900 A5A - ASME Class 1500 A6A - ASME Class 2500 B3A - ASME Class 600 D2A - ASME Class 600 F1A - ASME Class 150

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