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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 -- High-Performance Metal-to-Metal Seated Butterfly Valve
Triple offset butterfly valves (TOBV) for critical high-pressure and high-temperature isolation service. The triple-offset geometry (shaft offset from disc centre, shaft offset from pipe centreline, and conical seating surface angle) ensures zero interference between disc and seat during operation, achieving bubble-tight metal-to-metal sealing with minimal wear. Suitable for Class 600 pressure rating and temperatures up to 600 deg C.
| Parameter | Specification |
|---|---|
| Product Type | Triple Offset Butterfly Valve (TOBV) |
| Category | Quarter-Turn Valves |
| Size Range | 6" (DN150) -- other sizes on request |
| Pressure Class | Class 600 per ASME B16.5 |
| End Connections | Wafer or Lug type per API 609 |
| Body Material | ASTM A351 CF8M (SS316) Stainless Steel Casting |
| Disc Material | ASTM A351 CF8M (SS316) with Stellite or Inconel overlay on seating surface |
| Seat Material | SS316 with Stellite / Inconel overlay -- metal-to-metal seal |
| Stem Material | ASTM A276 316 Stainless Steel |
| Seal Type | Triple offset geometry -- conical metal-to-metal seal, zero interference during opening/closing |
| Face-to-Face | API 609 short pattern or ASME B16.10 long pattern |
| Leakage Class | Zero leakage -- metal-to-metal seal achieves bubble-tight shutoff in both directions |
| Temperature Range | -50 deg C to +600 deg C (Stellite overlay) -- higher temperatures with Inconel 625 overlay |
| Component | Material |
|---|---|
| Stainless Steel | ASTM A351 CF8M (SS316), A276 316 |
| Overlay | Stellite 6, Inconel 625, Hastelloy C |
| Stem | ASTM A276 316 with anti-blowout design |
| Bearings | SS316 / PTFE composite self-lubricating |
| Test | Requirement |
|---|---|
| Testing | Hydrostatic shell test 1.5 x WP per API 598; Seat leakage test 1.1 x WP -- zero visible leakage; Functional test -- full stroke, torque verification; Cryogenic test available on request |
| Certification | ISO 9001:2015 QMS, EN 10204 3.1 material certificates, hydrostatic and seat test reports |
| Standard | Description |
|---|---|
| Design Standard | API 609 Category B / MSS SP-68, ASME B16.34 |
The Triple Offset Butterfly Valve -- Class 600 SS316 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.