4th Floor, Survey No. 235/A and 247/A, E/401, Nr. Bhattha School, Gyaspur, Ahmedabad 382405, Gujarat, India
Branch Office: Mehta House, Relief Road, Ahmedabad 380001
Tel: +91 97732 78770 | Email: info@supremevalves.in | www.supremevalves.in
Combined Manual Stop and Automatic Lift Check Valve for Boiler Feed and Steam
This datasheet covers combined stop and lift check valves in WCB for boiler feed, steam turbine extraction, and process heater supply where both isolation and backflow prevention are required.
| Parameter | Specification |
|---|---|
| Valve Size Range | DN50 to DN400 (2" to 16") |
| Pressure Rating | PN40 / Class 300 / Class 600 / Class 900 |
| Body Material | WCB carbon steel, normalised and tempered |
| Disc Material | SS316 + Stellite 6 hard facing, guided lift disc |
| Seat Material | Integral Stellite 6 overlay, lapped to disc |
| Stem Material | SS316 rising stem with ACME threads for stop function |
| Guide | SS316 integral disc guide wings and body guide ribs |
| Spring | Optional Inconel X-750 spring-assisted closure |
| Packing | Graphite braided rings with anti-extrusion end rings |
| Gaskets | Spiral-wound SS316 + graphite for body/bonnet and flange joints |
| Temperature Range | -29°C to +425°C (WCB); +593°C with WC9 |
| End Connections | Flanged ASME B16.5, butt weld ASME B16.25 |
| Features | Combined stop and check, guided disc, optional spring, full port |
| Component | Material |
|---|---|
| Body | WCB carbon steel, sand cast, normalised and tempered, machined seat bore and flange faces |
| Bonnet | WCB carbon steel, bolted bonnet with spiral-wound gasket groove |
| Disc | SS316 lift disc with Stellite 6 cobalt alloy hard facing on seating surface |
| Seat | Integral WCB with Stellite 6 overlay; renewable screwed seat ring optional |
| Stem | SS316 rising stem with precision ACME threads and handwheel nut for manual stop function |
| Guide | SS316 guide wings integral to disc, matched to body guide ribs to prevent lateral movement |
| Spring | Optional Inconel X-750 spring for rapid closure; spring rate selected per service conditions |
| Test | Requirement |
|---|---|
| Test Standard | API 598 / ISO 5208 |
| Certification | CE, PED, ISO 9001, IBR on request |
| Standard | Description |
|---|---|
| Design Standard | ASME B16.34 / BS 1868 / API 600 |
The Stop Check Valve -- Lift Type Globe 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.