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Controlled-Closure Swing Check Valve with External Lever and Adjustable Weight
This datasheet covers swing check valves in WCB with outside lever and adjustable weight for controlled non-slam closure in water distribution, cooling water, and fire water pump discharge.
| Parameter | Specification |
|---|---|
| Valve Size Range | DN50 to DN600 (2" to 24") |
| Pressure Rating | PN16 / PN40 / Class 150 / Class 300 |
| Body Material | WCB carbon steel, normalised and tempered |
| Disc Material | SS316 + Stellite 6 hard facing, hinged swing disc |
| Hinge Pin | SS316 hardened hinge pin with bushings |
| Seat Material | Integral Stellite 6 overlay; renewable seat ring standard |
| Lever | Cast iron or ductile iron outside lever with adjustment holes |
| Weight | Cast iron adjustable weight, position-set at factory |
| Gaskets | Spiral-wound SS316 + graphite for body/cover joint |
| Temperature Range | -29°C to +425°C (WCB standard) |
| End Connections | Flanged ASME B16.5 / BS EN 1092-1, butt weld |
| Features | Adjustable closing speed, visual position, full port, renewable seat, robust hinge |
| Component | Material |
|---|---|
| Body | WCB carbon steel, sand cast, normalised and tempered, machined seat bore and flange faces |
| Cover | WCB carbon steel, bolted cover with spiral-wound gasket groove and hinge boss |
| Disc | SS316 swing disc with Stellite 6 cobalt alloy hard facing on seating surface |
| Hinge Pin | SS316 hardened hinge pin with replaceable bronze or PTFE-impregnated bushings |
| Seat | Renewable screwed SS316 seat ring with Stellite 6 overlay; standard for all sizes |
| Lever | Cast iron or ductile iron outside lever with multiple adjustment holes for weight positioning |
| Weight | Cast iron adjustable weight, factory-positioned per valve size and service conditions |
| Test | Requirement |
|---|---|
| Test Standard | API 598 / ISO 5208 |
| Certification | CE, PED, ISO 9001 |
| Standard | Description |
|---|---|
| Design Standard | ASME B16.34 / BS 1868 / API 600 |
The Swing Check Valve -- Outside Lever & Weight 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.