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Branch Office: Mehta House, Relief Road, Ahmedabad 380001
Tel: +91 97732 78770 | Email: info@supremevalves.in | www.supremevalves.in
Technical Datasheet -- Spring-Assisted Lift Check Valves for Horizontal and Vertical Service
Piston (lift) check valves for horizontal and vertical pipeline service. Spring-assisted or non-spring disc lifts with forward flow and returns to seat on flow reversal. Compact face-to-face per API 594 short pattern. Low cracking pressure (0.05 bar non-spring). Can be installed in any orientation with appropriate spring selection. API 6D / ASME B16.34 compliant.
| Parameter | Specification |
|---|---|
| Product Type | Piston Check Valves |
| Category | Check Valves |
| Size Range | 1/2" to 24" (DN15 to DN600) |
| Pressure Class | Class 150 / Class 300 / Class 600 / Class 900 / Class 1500 per ASME B16.5 |
| End Connections | RF / RTJ flanged per ASME B16.5 or butt-weld per ASME B16.25 |
| Body Material | ASTM A216 WCB / ASTM A217 WC6 (high temp) / ASTM A351 CF8M (SS316) |
| Disc / Piston | ASTM A216 WCB with Stellite 6 overlay / SS316 disc with Stellite overlay |
| Seat Material | Integral WCB + Stellite 6 overlay or renewable SS316 + Stellite seat ring |
| Spring Material | SS316 spring (optional, for vertical installation or rapid closure) / Inconel X-750 (high temp) |
| Bonnet Type | Bolted bonnet with spiral wound SS316/graphite gasket |
| Face-to-Face | API 594 short pattern or ASME B16.10 |
| Orientation | Horizontal or vertical (spring-assisted required for vertical upward flow) |
| Cracking Pressure | 0.05 bar (non-spring, horizontal) -- 0.1 to 0.3 bar (spring-assisted) |
| Leakage Class | API 598 / EN 12266-1 -- metal seated standard leakage acceptable; soft seat option: Class A |
| Temperature Range | -29 deg C to +425 deg C (WCB) -- up to +540 deg C (WC6) |
| Component | Material |
|---|---|
| Carbon Steel | ASTM A216 WCB, A105 (standard industrial) |
| Alloy Steel | ASTM A217 WC6, WC9 (high temperature) |
| Stainless Steel | ASTM A351 CF8M (SS316) -- corrosive service |
| Seat Overlay | Stellite 6 on WCB/WC6/SS316 seat for erosion resistance |
| Spring | SS316 (standard) or Inconel X-750 (high temperature > 400 deg C) |
| Test | Requirement |
|---|---|
| Testing | Hydrostatic shell test 1.5 x WP per API 598 / EN 12266-1; Seat leakage test per API 598 / EN 12266-1; Functional test -- full stroke, torque; Material certificates per EN 10204 3.1 |
| Certification | ISO 9001:2015 QMS, EN 10204 3.1 material certificates, hydrostatic and seat test reports |
| Standard | Description |
|---|---|
| Design Standard | API 6D / API 594 Check Valves, ASME B16.34 |
The Piston Check Valve -- API 6D WCB is designed, manufactured, and tested in accordance with applicable API / ASME / BS / ISO international standards. Compliance documentation and Material Test Certificates (EN 10204 3.1) are provided with every order.
Standard construction is carbon steel, stainless steel (CF8 / CF8M), and special alloy grades. Alternative and upgraded grades -- Duplex, Super Duplex, Inconel, Monel, Hastelloy, and NACE MR0175 trims for sour service -- are available on request.
It is offered in a range of sizes as per the technical specification with standard ANSI / ASME pressure classes (PN ratings on request). End connections include flanged (RF / RTJ), butt-weld, socket-weld, and screwed ends as per specification.
Yes. Supreme Valves India is an established exporter of industrial valves to Saudi Arabia (KSA), the UAE, Qatar, Kuwait, Oman, Bahrain, and across the Gulf. We provide sea-worthy export packing, EN 10204 3.1 / 3.2 certification, certificate of origin, and support for SABER / SASO conformity on KSA shipments.
Every valve undergoes hydrostatic shell and seat testing per API 598 / ISO 5208. Documentation includes EN 10204 3.1 MTC (3.2 on request), NDT reports, and fire-safe (API 607) or NACE MR0175 certification where applicable. Third-party inspection by TÜV, SGS, Bureau Veritas, or Lloyd's Register can be arranged.
Order quantities are flexible -- from single units for stocked items to bulk volumes for project requirements. Lead time depends on size, material, and quantity; please contact our team with your specification for a firm delivery schedule and quotation.