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.
Get Quote 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.
WCB, WC6, WC9, CF8, CF8M, CF3, CF3M, LCB, LCC, Hastelloy, Duplex, Monel, and exotic alloys.
| Part Name | Material Option | Technical Specification |
|---|---|---|
| Body / Cover | Carbon Steel / Stainless Steel | ASTM A216 Gr WCB / ASTM A351 CF8/CF8M |
| Disc / Hinge | 13% Cr. S.S / Stellite | AISI 410 / ASTM A217 CA15 / Stellite Faced |
| Seat Ring | 13% Cr. S.S | AISI 410 Faced with HF* |
| Hinge Pin | 13% Cr. S.S | AISI 410 / AISI 304 / AISI 316 |
| Gasket | Spiral Wound | SS304/SS316 with Graphite Filler |
| Cover Stud / Nut | Alloy Steel | ASTM A193 B7 / A194 2H |
| Body Gasket | SPW-SS304-CAF | Standard Rating |