What is the design pressure for piping class A2A valves?

Piping class A2A is rated for a design pressure of 50 bar (725 psi) at a design temperature of Up to 350°C (662°F). Fluid service: Medium Pressure - Process, Steam, Hydrocarbons to 50 bar. Corrosion allowance: 3mm.

What valve types are specified in piping class A2A?

Piping class A2A includes: Gate Valve, Globe Valve, Check Valve, Ball Valve (2" and below), Ball Valve (3" and above). All valves are to ASME Class 300 rating with Carbon Steel ASTM A216 WCB body material.

What body material is required for piping class A2A?

The body material for piping class A2A is Carbon Steel ASTM A216 WCB. This is selected for Medium Pressure - Process, Steam, Hydrocarbons to 50 bar service at 50 bar (725 psi) and Up to 350°C (662°F).

Which industries use piping class A2A?

Piping class A2A is typically used in: Refinery process, Petrochemicals, Steam generation, High-pressure utilities. Vajra Industrial Solutions supplies all valve types to A2A specification with full EN 10204 3.1 material certificates, hydrostatic test certificates, and dimensional inspection reports.

Home Piping ClassesA2A

Piping Class Reference

Piping Class A2A Valve Specification

Piping Class A2A is the ASME Class 300 carbon steel piping class for medium-pressure process and steam service. Used in refinery process streams, boiler steam mains, and chemical plant medium-pressure headers.

ASME Class

ASME Class 300

Design Pressure

50 bar (725 psi)

Design Temperature

Up to 350°C (662°F)

Body Material

Carbon Steel ASTM

What is piping class Piping Class A2A?

Piping Class A2A is the ASME Class 300 carbon steel piping class for medium-pressure process and steam service.

ASME Class:: ASME Class 300
Service:: Medium Pressure - Process, Steam, Hydrocarbons to 50 bar
Body Material:: Carbon Steel ASTM A216 WCB

Design Parameters - A2A

Fluid Service

Medium Pressure - Process, Steam, Hydrocarbons to 50 bar

Design Pressure

50 bar (725 psi)

Design Temperature

Up to 350°C (662°F)

Corrosion Allowance

3mm

Body Material

Carbon Steel ASTM A216 WCB

Industries

Refinery process, Petrochemicals

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 A2A

Valve Type	Rating	End Connection	Body Material	Trim	Seat/Sealing	Notes
Gate Valve	Class 300	RF Flange (ASME B16.5)	A216 WCB	13Cr / Stellite-6 HF	Stellite-6 HF	API 600, OS&Y, bolted bonnet
Globe Valve	Class 300	RF Flange (ASME B16.5)	A216 WCB	Stellite-6	Stellite-6	T or Y-pattern, OS&Y
Check Valve	Class 300	RF Flange (ASME B16.5)	A216 WCB	Stellite-6	Stellite-6	Swing or tilting disc
Ball Valve (2" and below)	Class 300	Screwed/SW	A105 Forged	SS 316	PTFE	Full bore, fire-safe
Ball Valve (3" and above)	Class 300	RF Flange (ASME B16.5)	A216 WCB	SS 316	PTFE / RPTFE	Trunnion, fire-safe, antistatic