Piping Class D2A
Piping Class Spec

Check Valves — Piping Class D2A

The check valves specification for piping class D2A (ASME Class 600, Sour / H₂S Service - NACE MR0175 Compliant Carbon Steel, Class 600) — body, trim, seat, end connection and rating, ready to quote.

What is the check valves spec for piping class D2A?

Piping class D2A (ASME Class 600) covers Sour / H₂S Service - NACE MR0175 Compliant Carbon Steel, Class 600 with a Carbon Steel ASTM A352 LCC (Low Temperature CS) with NACE MR0175/ISO 15156 Compliance body material and 3mm corrosion allowance, rated for 99.3 bar (1440 psi) at 38°C (100°F) at -46°C to +425°C (-51°F to +797°F). The check valves specification for this class is below.

TypeRatingBodyTrimSeatEnd Conn.
Check ValveClass 600A352 LCC (NACE)SS316 NACE compliantSS316 HF (NACE)RTJ Flanged or BW
  • -Check Valve: API 594; swing or dual plate; NACE compliant springs and internals

Vajra Check Valves

Non-return valves to prevent backflow and protect equipment in piping systems.

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Other valves in piping class D2A

Gate Valves — D2AGlobe Valves — D2ABall Valves — D2A

Check Valves in other piping classes

Check Valves — A1ACheck Valves — A2ACheck Valves — A3ACheck Valves — B1ACheck Valves — B2ACheck Valves — C1ACheck Valves — D1ACheck Valves — E1ACheck Valves — A4ACheck Valves — A5A
Reviewed by Materials Engineering, Vajra Industrial SolutionsDiscipline: Valve Metallurgy & Materials SelectionLast reviewed: 20 June 2026

Connected Engineering

Standards
ASME B16.34NACE MR0175
Materials
A216 WCB Carbon SteelA352 LCC Low-Temp
Products
Check Valves

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Vajra Check Valves

Engineering references

Piping Class D2AFull valve schedule & specPiping Class Quick ReferenceAll classes comparedVajra Check ValvesFull range, specs & standards