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
Technical Datasheet -- Expanding Gate Valves for Oil & Gas Pipeline Service
Through-conduit expanding gate valves for oil & gas pipeline isolation service. Full-bore design with parallel expanding gate and segment provides mechanical sealing against both seats, independent of line pressure. API 6D compliant with double block and bleed capability. Metal-to-metal Stellite seats are inherently fire-safe. In-line seat replacement capability.
| Parameter | Specification |
|---|---|
| Product Type | Through-Conduit Gate Valves |
| Category | Gate Valves |
| Size Range | 2" to 48" (DN50 to DN1200) |
| Pressure Class | Class 150 / Class 300 / Class 600 / Class 900 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) |
| Gate / Segment | ASTM A216 WCB with ENP or SS316 with Stellite overlay |
| Seat Material | SS316 with Stellite 6 overlay -- metal-to-metal seal (fire-safe by design) |
| Stem Material | ASTM A276 410 / SS316 with anti-blowout design |
| Bore | Full bore (FB) equal to pipe ID per API 6D -- minimal pressure drop |
| Operation | Handwheel (up to 12 inch) / Bevel gear (14 inch and above) / Actuator |
| Leakage Class | API 598 / EN 12266-1 -- zero visible leakage for metal-to-metal seat after expanding gate actuation |
| DBB Feature | Double block and bleed -- expanding gate provides independent upstream and downstream seat isolation |
| Temperature Range | -29 deg C to +425 deg C (WCB body) -- up to +540 deg C (WC6 body) |
| Component | Material |
|---|---|
| Carbon Steel | ASTM A216 WCB, A105 (standard industrial) |
| Alloy Steel | ASTM A217 WC6, WC9 (high temperature > 425 deg C) |
| Stainless Steel | ASTM A351 CF8M (SS316) -- corrosive service |
| Seat Overlay | Stellite 6 on SS316 seat for erosion and galling resistance |
| 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 Pipeline Valves, API 598, ASME B16.34 |
The Through-Conduit Gate 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.