2'' Spring Check Valve is non-return valve designed to allow fluid (typically water) to flow in one direction only and prevent backflow in fire protection systems. It plays a critical role in ensuring the reliability, safety, and hydraulic stability of the fire fighting network.
| Backflow Prevention | ● The valve automatically closes when flow stops or reverses, preventing water from flowing backward from the system into the supply line or pump. | |||||||||||||||||
| ● This ensures the fire pump or water source is not contaminated or damaged by reverse flow | ||||||||||||||||||
| Fire Pump Discharge Protection | ● Installed at the discharge side of the fire pump, it prevents water from returning to the pump when it stops operating | |||||||||||||||||
| ● Helps maintain prime pressure and prevents pump impeller reverse rotation | ||||||||||||||||||
| Jockey Pump Line Protection | ● In systems with a jockey pump (pressure maintenance pump), a spring check valve ensures that when the main fire pump runs, high-pressure water does not flow back into the jockey pump line. | |||||||||||||||||
| Zone or Sectional Isolation | ● Used in fire hydrant or sprinkler system branches to isolate zones and prevent cross-flow between lines when pressure differentials occur. | |||||||||||||||||
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