Angle Stop Check Valve -- 90 Degree WCB
Compact Angle-Pattern Combined Stop and Check Valve for Boiler and Marine Service
Document No.SV-DS-CHK-010
RevisionRev A
DateMay 2026
ManufacturerSupreme Valves India, Ahmedabad, Gujarat, India
This datasheet covers 90-degree angle pattern combined stop and check valves in WCB for boiler feed, steam heater, marine, and condensate return applications where space is limited.
Technical Specifications
| Parameter | Specification |
|---|
| Valve Size Range | DN50 to DN300 (2" to 12") |
| Pressure Rating | PN40 / Class 300 / Class 600 |
| Body Material | WCB carbon steel, 90-degree angle pattern casting |
| Disc Material | SS316 + Stellite 6 hard facing, guided lift disc |
| Seat Material | Integral Stellite 6 overlay, lapped to disc |
| Stem Material | SS316 rising stem with ACME threads for stop function |
| Guide | SS316 integral disc guide and body guide ribs |
| Spring | Optional SS304 spring-assisted closure |
| Packing | Graphite braided rings with anti-extrusion end rings |
| Gaskets | Spiral-wound SS316 + graphite for body/bonnet joint |
| Temperature Range | -29°C to +425°C (WCB standard) |
| End Connections | Flanged ASME B16.5, butt weld ASME B16.25 |
| Features | 90-degree angle, combined stop and check, guided disc, spring option |
Materials of Construction
| Component | Material |
|---|
| Body | WCB carbon steel, 90-degree angle pattern sand casting, machined seat bore and flange faces |
| Bonnet | WCB carbon steel, bolted bonnet with spiral-wound gasket groove |
| Disc | SS316 lift disc with Stellite 6 cobalt alloy hard facing on seating surface |
| Seat | Integral WCB with Stellite 6 overlay; renewable screwed seat ring optional |
| Stem | SS316 rising stem with precision ACME threads and handwheel nut for manual stop function |
| Guide | SS316 guide ribs integral to body, matched to disc guide for chatter prevention |
| Spring | Optional SS304 spring for rapid closure; selected per service pressure and flow velocity |
Testing & Inspection
| Test | Requirement |
|---|
| Test Standard | API 598 / ISO 5208 |
| Certification | CE, PED, ISO 9001, IBR certified option |
Applicable Standards
| Standard | Description |
|---|
| Design Standard | ASME B16.34 / BS 1868 / API 600 |
Notes
- Angle stop check valves are unidirectional; install with flow arrow matching actual process direction cast on body.
- 90-degree angle body creates a flow direction change; verify that downstream piping can accept the changed orientation without stress.
- Spring-assisted closure is recommended for vertical riser installations and high-velocity condensate pump discharge.
- For high-temperature service above 425°C, specify WC6 body with Stellite 6 trim and graphite packing upgrade.
- IBR certification requires third-party inspection and Form III-C; specify at order and allow 3 weeks additional schedule.
