Swing Check Valve
Category: Brass & Bronze Valve
Overview
Swing check valves prevent backflow by means of a hinged disc that swings open under forward flow pressure and closes by gravity and reverse pressure. The full-bore swing disc in the open position offers very low pressure drop, making swing checks more suitable than lift checks for low-velocity and pulsating flow applications. Suitable for horizontal and vertical-upward installation in water supply, drainage, compressed air, and general process lines.
Technical Specifications
| Body / Cap Material | Brass (CW617N) |
| Disc / Hinge Material | Brass / PTFE-faced |
| Seat Material | Machined brass lapped seat |
| End Connection | Threaded BSP / NPT |
| Pressure Rating | PN16 – PN25 |
| Temperature Range | -20°C to +110°C |
| Size Range | DN8 – DN100 (1/4″ – 4″) |
| Cracking Pressure | 0.03 – 0.07 bar (low cracking pressure) |
| Installation Orientation | Horizontal / vertical upward flow |
| Standard | EN 12334 / ISO 7121 |
Applications
- Pump discharge backflow prevention
- water supply line protection
- compressed air line check
- HVAC hydronic circuit backflow prevention
- irrigation system backflow protection
- general utility piping non-return service
Key Features
- Full-bore swing disc — low pressure drop
- gravity and reverse-pressure self-closing
- no external actuator required
- low cracking pressure (0.03 bar)
- suitable for pulsating flow systems
- inspectable via removable cap or cover
For technical inquiries & custom orders: supakorn@stico.co.th | Tel: 02-035-9589
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