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Branch Office: Mehta House, Relief Road, Ahmedabad 380001
Tel: +91 97732 78770 | Email: info@supremevalves.in | www.supremevalves.in
Heavy-Duty Slurry Isolation Valve for Pulp, Mining, and Ash Handling
This datasheet covers unidirectional wafer knife gate valves in WCB with EPDM sleeve for on/off isolation in pulp and paper stock, mining slurry, power plant ash, and wastewater grit applications.
| Parameter | Specification |
|---|---|
| Valve Size Range | DN50 to DN900 (2" to 36") |
| Pressure Rating | PN10 / PN16 / Class 150 |
| Body Material | WCB carbon steel, SS304, SS316, ductile iron GGG50 |
| Gate Material | SS304 or SS316 bevelled and polished to knife edge |
| Sleeve Material | EPDM, NBR, VITON, PTFE, or polyurethane |
| Temperature Range | -20°C to +120°C (EPDM), +200°C (VITON/PTFE) |
| End Connections | Wafer lug ISO 5752 / MSS SP-81 |
| Operation | Handwheel, chain-wheel, bevel gear, pneumatic or electric actuator |
| Gate Travel | Full bore unobstructed passage when open; gate fully retracts into bonnet |
| Options | Deflector cone, scraper, purge ports, limit switches |
| Component | Material |
|---|---|
| Body | WCB carbon steel or ductile iron, wafer profile with machined sealing faces |
| Gate | SS304 or SS316 plate, bevelled to knife edge, polished to Ra 1.6 µm on sealing faces |
| Sleeve / Seat | EPDM or polyurethane moulded sleeve, replaceable, captures gate on both sides |
| Packing | PTFE-impregnated braided fibre or graphite for high-temperature service |
| Yoke / Bonnet | WCB or SS304 open yoke with gate travel guides and position indicator |
| Stem | SS304 or SS316 with ACME threads, handwheel nut with thrust bearing |
| Hardware | SS304 studs and nuts; B7 studs for high-temperature service |
| Test | Requirement |
|---|---|
| Test Standard | API 598 / MSS SP-81 shell and seat test |
| Certification | CE, ISO 9001 |
| Standard | Description |
|---|---|
| Design Standard | MSS SP-81 / API 600 (adapted) |
The Knife Gate Valve -- Unidirectional Wafer Slurry WCB EPDM 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.