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Tel: +91 97732 78770 | Email: info@supremevalves.in | www.supremevalves.in
Technical Datasheet -- Multi-Ply Bellows Seal Globe Valves for Fugitive Emission Control
Bellows seal globe valves for zero-emissions service. Multi-ply SS316L hydroformed bellows provides an absolute dynamic seal around the stem, eliminating all packing leakage and meeting TA-Luft, ISO 15848-1, and EPA VOC emission requirements. Secondary graphite packing provides fail-safe backup sealing. Available with soft PTFE seat (bubble-tight) or Stellite metal seat (high temperature).
| Parameter | Specification |
|---|---|
| Product Type | Bellows Seal Globe Valves |
| Category | Globe Valves |
| Size Range | 1/2" to 6" (DN15 to DN150) |
| Pressure Class | Class 150 / Class 300 / Class 600 per ASME B16.5 |
| End Connections | RF flanged per ASME B16.5, threaded NPT / BSP, socket weld, butt weld |
| Body Material | ASTM A351 CF8M (SS316) / ASTM A216 WCB (carbon steel with SS316 bellows) |
| Bellows Material | Multi-ply SS316L / SS321 / Inconel 625 bellows (hydroformed or welded plies) |
| Disc Material | SS316 with Stellite 6 overlay or soft seat (PTFE/RPTFE) option |
| Seat Material | SS316 with Stellite 6 overlay (metal seat) or renewable PTFE insert (soft seat) |
| Stem Material | SS316 with anti-blowout design -- stem is fully enclosed by bellows |
| Secondary Packing | Graphite braided packing below bellows as secondary seal in event of bellows failure |
| Leakage Class | TA-Luft / ISO 15848-1 Class BH (bellows) -- zero visible external leakage; Seat: API 598 Class A (soft seat) or standard (metal seat) |
| Temperature Range | -196 deg C to +400 deg C (SS316L bellows) -- up to +600 deg C (Inconel 625 bellows) |
| Bellows Cycle Life | > 10,000 full open/close cycles at rated pressure and temperature |
| Component | Material |
|---|---|
| Stainless Steel | ASTM A351 CF8M (SS316) body, SS316L multi-ply bellows |
| Carbon Steel | ASTM A216 WCB body with SS316L bellows (economical zero-emissions option) |
| High-Temp Bellows | Inconel 625 multi-ply bellows for temperatures above 400 deg C |
| Seat Options | SS316 + Stellite (metal seat) or PTFE/RPTFE insert (soft seat, bubble-tight) |
| 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 602 Compact Steel Gate/Globe/Check Valves, ASME B16.34, API 598, TA-Luft (German clean air) |
The Bellows Seal Globe Valve -- SS316 Zero Emissions 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.