Direct answer · Updated July 2026
Who manufactures WCB swing check valves in India?
Supreme Valves India supplies API 594 / BS 1868 WCB swing check valves Class 150–600 flanged RF for steam and water backflow protection, API 598 tested with EN 10204 3.1 MTC from Ahmedabad. RFQ: +91 97732 78770.
Get valve quote India · +91 97732 78770 · Indicative price list
Applications
Steam Systems
Isolation, regulation, and condensate protection on steam mains and tracing lines.
Boiler Systems
IBR-rated WCB gate, globe, and check valves for boiler feed, blowdown, and steam stop service.
Process Efficiency
Reliable shut-off and backflow prevention for water, oil, and process fluid lines.
Compressed Air Systems
Moisture separators and strainers to protect downstream equipment from water and debris.
Moisture Control
Separators and steam traps integration for dry steam delivery and plant efficiency.
Environmental Control Systems
HVAC, humidification, and utility packages requiring WCB valve trains.
Complete WCB Valve Range
Cast steel WCB wedge gate, OS&Y rising stem, Class 150–2500#
Bolted bonnet globe for throttling, steam stop, and regulation
API 594 / BS 1868 flanged swing check, low pressure drop
Cast steel WCB Y-strainer for pump and compressor protection
Flanged moisture separator for steam and compressed air lines
Technical Standards
Special Features & Options
- Outside lever and weight (OL&W) option
- Non-slam / slow-close design on request
- SS 410 or SS 316 disc and seat
- Horizontal and vertical flow configurations
- IBR for boiler feed check service
- Dual plate and wafer types also available
Material of Construction — WCB
| Part No. | Part Name | WCB / Standard |
|---|---|---|
| 01 | Body | A 216 WCB |
| 02 | Bonnet / Cover | A 216 WCB |
| 03 | Disc (Swing Type) | SS 410 / CF8M option |
| 04 | Hinge Pin | SS 304 |
| 05 | Seat Ring | Integral / Renewable SS 410 |
| 06 | Gasket | Spiral wound / Flat graphite |
| 07 | Stud & Nut | A193 B7 / A194 2H |
Face-to-Face & Flange Dimensions — Class 150# (RF)
Typical dimensions for WCB flanged valves per ASME B16.10 face-to-face and ASME B16.5 Class 150 flange drilling. Confirm for your exact valve type at enquiry.
| Size (mm) | NPS | A (F-F) | B | ØC | ØD | ØM | N | PCD |
|---|---|---|---|---|---|---|---|---|
| 15 | 1/2 | 108.0 | 11.1 | 35 | 89.0 | 16 | 4 | 60.4 |
| 20 | 3/4 | 118.0 | 12.7 | 43 | 98.5 | 16 | 4 | 70.0 |
| 25 | 1 | 127.0 | 11.0 | 51 | 108.0 | 16 | 4 | 79.2 |
| 40 | 1 1/2 | 165.1 | 14.2 | 73 | 127.0 | 16 | 4 | 98.5 |
| 50 | 2 | 177.8 | 15.7 | 92 | 152.0 | 19 | 4 | 120.6 |
| 65 | 2 1/2 | 190.5 | 17.5 | 105 | 178.0 | 19 | 4 | 139.7 |
| 80 | 3 | 203.2 | 19.0 | 127 | 190.5 | 19 | 4 | 152.4 |
| 100 | 4 | 228.6 | 24.0 | 157 | 229.0 | 19 | 8 | 190.5 |
| 125 | 5 | 254.0 | 24.0 | 186 | 254.0 | 22 | 8 | 215.9 |
| 150 | 6 | 266.7 | 25.0 | 216 | 279.0 | 22 | 8 | 241.3 |
| 200 | 8 | 292.1 | 28.5 | 270 | 343.0 | 22 | 8 | 298.4 |
| 250 | 10 | 330.2 | 30.0 | 324 | 406.0 | 25 | 12 | 362.0 |
| 300 | 12 | 355.6 | 32.0 | 381 | 483.0 | 25 | 12 | 431.8 |
Class 300#, 600#, and larger sizes available on request. Dimensions above 600 mm per ASME B16.47.
Also available: CF8M, NAB C95800 for seawater; dual plate wafer check valves.
Request WCB Valve Quote
Send valve type, size, class, quantity, end connection, and destination. Engineering response within 24 hours.
Or call +91 97732 78770 · info@supremevalves.in
Frequently Asked Questions
What is the difference between swing check and lift check?
Swing check valves use a hinged disc that swings open — ideal for horizontal lines with low pressure drop. Lift check valves use a guided disc that lifts vertically — better for vertical flow and fast closing.
Can swing check valves be used on steam lines?
Yes. WCB swing check valves with metal seats are widely used on steam condensate and process steam lines. Specify temperature class and trim for superheated service.
What is API 594?
API 594 covers check valves: flanged, lug, and wafer types for refinery and process service. Our WCB swing checks are designed and tested per API 594 and API 598.