Jacketed Valve -- Steam Jacketed Molten Sulphur / Bitumen
Technical Datasheet -- Steam Jacketed Valves for Solidifying Media Service
Document No.SV-DATA-JKV-001
RevisionA
DateMay 2026
ManufacturerSupreme Valves India, Ahmedabad, Gujarat, India
Fully steam-jacketed gate, globe, and ball valves for molten sulphur, bitumen, pitch, and other solidifying media. Inner body carries process fluid; outer welded steam jacket (SA-516 plate, full-penetrement welds with PWHT per ASME Section IX) maintains temperature above solidification point. Flanged steam inlet/outlet connections positioned for thermosyphon or forced circulation. Inner valve uses standard API 600 / API 6D proven trim and seats. WCB, SS316, or WC6 inner body with Stellite seat overlay. Jacket rated for 10 bar saturated steam. ASME B16.34 / API 600 / API 6D / ASME Section IX compliant.
Technical Specifications
| Parameter | Specification |
|---|
| Product Type | Jacketed Valves |
| Category | Specialty Valves |
| Size Range | 1" to 12" (DN25 to DN300) |
| Pressure Rating | PN16 / PN25 / PN40 / Class 150 / Class 300 -- steam jacket rated for 10 bar (145 psi) saturated steam typical |
| End Connections | Flanged RF per EN 1092-1 PN16/PN25/PN40 / ASME B16.5 Class 150/300 -- process side; Flanged RF or threaded NPT -- steam jacket inlet/outlet |
| Inner Body Material | ASTM A216 WCB (standard) / ASTM A351 CF8M (SS316, for corrosive or high-temp service) / ASTM A217 WC6 (high temperature > 425 deg C) |
| Jacket Material | ASTM A216 WCB / ASTM A351 CF8M (SS316) / SA-516 Gr. 60/65/70 carbon steel plate (welded jacket construction) |
| Jacket Welding | SA-516 plate welded to inner body with full penetration welds; PWHT per ASME Section IX for WCB; no PWHT for SS316 |
| Steam Inlet / Outlet | 1/2" to 2" flanged or threaded NPT connections on jacket, positioned for thermosyphon or forced circulation |
| Inner Valve Trim | SS316 / WCB with Stellite 6 overlay seat (gate/globe) / SS316 ball and seats (ball) / PTFE/RPTFE soft seats (ball, on request for lower temp) |
| Packing | Graphite braided with live-loading (high temp standard) / PTFE (on request for lower temperature) |
| Face-to-Face | ASME B16.10 (inner valve) -- overall face-to-face includes jacket thickness, typically 50--100 mm larger than standard valve |
| Operation | Handwheel (gate/globe, up to 6 inch) / Gear operator (8 inch and above) / Lever (ball, up to 4 inch) / Actuator |
| Leakage Class | API 598 / EN 12266-1 -- metal seated standard leakage (gate/globe); Class A (soft seat, ball); zero visible leakage for jacket weld joints |
| Temperature Range | Inner valve: up to +425 deg C (WCB) -- up to +540 deg C (WC6); Jacket steam: up to +200 deg C saturated steam (10 bar) |
Materials of Construction
| Component | Material |
|---|
| Carbon Steel | ASTM A216 WCB inner body and jacket (standard for molten sulphur, bitumen) |
| Stainless Steel | ASTM A351 CF8M (SS316) inner body and jacket (corrosive / high-purity chemical service) |
| Alloy Steel | ASTM A217 WC6 inner body (high temperature > 425 deg C on request) |
| Jacket Plate | SA-516 Gr. 60/65/70 carbon steel plate for welded jacket construction |
| Seat Overlay | Stellite 6 on WCB/WC6/SS316 seat for erosion and wear resistance in solidifying media |
Testing & Inspection
| 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 |
Applicable Standards
| Standard | Description |
|---|
| Design Standard | API 600 Steel Gate Valves / API 602 Globe Valves / API 6D Ball Valves, ASME B16.34, ASME Section IX (welding) |
Notes
- Process fluid type (sulphur, bitumen, pitch, wax, polymer), solidification temperature, and operating temperature must be specified by the purchaser for correct steam jacket sizing and temperature margin.
- Steam pressure and flow rate available at site must be specified for correct jacket connection sizing and heat duty verification.
- For high-viscosity media (> 10,000 cP at operating temperature), specify full-bore ball valve inner design to minimise pressure drop and prevent flow restriction.
- For corrosive media (acidic bitumen, chlorinated compounds), SS316 inner body and jacket with PTFE packing are required; WCB will corrode.
- All valves are manufactured by Supreme Valves India as per our standard specifications.
