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Non Return Valve
C.S / S.S
Forged Carbon Steel
Rating 150# 300# 600#
Size 2" to 12"
Rating 800#
size 1/2" to 2"

INTRO non return valve

Our Non-Return Valves (Check Valves) are engineered for automatic unidirectional flow control, effectively preventing backflow and protecting pumps and compressors from damage. Designed with minimal internal resistance, these valves ensure smooth fluid transition while maintaining absolute seat integrity under pressure. INTRO VALVE INDUSTRIES provides high-performance check valves for various industrial liquid and gas systems.

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Check Valve Availability:

  • Cast Steel Rating: 150#, 300#, 600#
  • Forged Steel Rating: 800#
Applications: Pump discharge, compressor lines, heating systems, and high-pressure process loops.
Types: Swing Check, Lift Check, Wafer Check, and Dual Plate Check.
Design Standards: BS 1868 / ASME B16.34 / API 6D / API 598
Size Range: 2" TO 12" (Cast) / 1/2" TO 2" (Forged)
Materials: WCB, WC6, WC9, CF8, CF8M, CF3, CF3M, LCB, LCC, Hastelloy, Duplex, Monel, and exotic alloys.
Part Name Material Option Technical Specification
Body / CoverCarbon Steel / Stainless SteelASTM A216 Gr WCB / ASTM A351 CF8/CF8M
Disc / Hinge13% Cr. S.S / StelliteAISI 410 / ASTM A217 CA15 / Stellite Faced
Seat Ring13% Cr. S.SAISI 410 Faced with HF*
Hinge Pin13% Cr. S.SAISI 410 / AISI 304 / AISI 316
GasketSpiral WoundSS304/SS316 with Graphite Filler
Cover Stud / NutAlloy SteelASTM A193 B7 / A194 2H
Body GasketSPW-SS304-CAFStandard Rating