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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 -- Disc-Type Thermodynamic Steam Traps for High-Pressure Steam Systems
Thermodynamic (disc-type) steam traps for high-pressure steam systems. Operate on the thermodynamic principle of flash steam velocity difference between condensate and live steam -- no external power, floats, or levers required. Compact, lightweight, and resistant to water hammer and freezing. SS316 or WCB body with Stellite-seated hardened disc. In-line repairable by removing the bolted cover. Suitable for steam distribution, process heating, tracing, and refinery applications up to 80 bar.
| Parameter | Specification |
|---|---|
| Product Type | Thermodynamic Steam Traps |
| Category | Steam Traps |
| Product Type | Thermodynamic Steam Trap (Disc Type) |
| Category | Steam Traps |
| Size Range | 1/2" to 2" (DN15 to DN50) -- other sizes on request |
| Pressure Rating | PN16 / PN40 / Class 150 / Class 300 / Class 600 -- up to 80 bar (1160 psi) |
| End Connections | Threaded NPT / BSP, Socket Weld, Flanged RF per ASME B16.5 / EN 1092-1 |
| Body Material | ASTM A351 CF8M (SS316) / ASTM A216 WCB / ASTM A105 (forged carbon steel) |
| Disc Material | SS316 hardened disc with Stellite 6 or chrome plating on seating surface |
| Seat Material | SS316 with Stellite 6 overlay -- ground and lapped to mirror finish |
| Cover / Bonnet | SS316 or WCB bolted cover with spiral wound SS316/graphite gasket |
| Operation Principle | Thermodynamic -- flash steam velocity lifts the disc off the seat; condensate velocity is insufficient to lift disc, allowing discharge |
| Discharge Mode | Intermittent -- disc opens and closes cyclically based on steam/condensate mix at the trap inlet |
| Back Pressure Tolerance | Up to 80% of inlet pressure (standard thermodynamic disc trap) |
| Air Venting | Automatic air venting on start-up -- cold air and condensate discharge freely until steam reaches the trap |
| Freeze Protection | Disc-type design is inherently resistant to freezing damage because the body is self-draining when installed vertically |
| Temperature Range | Up to +425 deg C (WCB / SS316) -- up to +540 deg C (WC6 body on request) |
| Component | Material |
|---|---|
| Stainless Steel | ASTM A351 CF8M (SS316) body, disc, and seat (corrosive / hygienic service) |
| Carbon Steel | ASTM A216 WCB body or ASTM A105 forged body (standard industrial steam) |
| Alloy Steel | ASTM A217 WC6 body (high-temperature steam > 425 deg C on request) |
| Seat Overlay | Stellite 6 on SS316 seat for erosion and wear resistance at high-velocity steam flash |
| 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 | ISO 6552 (reference), BS 6023, manufacturer's standard |
The Steam Trap -- Thermodynamic 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.