Bolted Cover, Full Port
Swing Check Valve
Proven design for low-velocity, clean service backflow prevention
A time-tested design with a full-port disc that swings fully out of the flow path when open — providing the lowest possible pressure drop. The bolted cover allows easy access for inspection and maintenance. Ideal for horizontal liquid lines with moderate flow velocity.
API 6DISO 9001CE PED
Technical Specifications
| Size Range | NPS 2″ – 48″ / DN 50 – 1200 |
| Pressure Rating | Class 150 – 2500 / PN 16 – 420 |
| Temperature Range | -29°C to +593°C |
| Body Material | WCB, WC6, WC9, CF8M, Duplex, AL-Bronze |
| Seat Material | Renewable SS 316 seat ring (integral hardfaced optional) |
| End Connection | RF Flanged, RTJ, Butt-Weld |
| Design Standard | API 6D, ASME B16.34, BS 1868 |
| Testing Standard | API 598, EN 12266-1 |
Key Features
- Full port design minimizes pressure drop when open
- Bolted cover for easy inline inspection and disc replacement
- External hinge pin for durable, corrosion-resistant pivot action
- Optional external counterweight for low-pressure gas service
- Optional dashpot for controlled closure in pulsating flow
Industry Applications
Water distribution mainsFirewater pumpsCooling water circuitsHVAC return linesLow-pressure steam condensate
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