Understanding Check Valve itself is a device used to regulate liquids to only flow in one direction and prevent flow in the opposite direction (backflow). Check Valve does not use a lever to regulate flow (open and close), but uses gravity and pressure from the flow itself. Because of its function to prevent backflow, Check Valve is often used as a safety device in the piping system in a series of hydrants.
Use of check valve in hydrant installation
The use of check valves in hydrant installations is often found in a series of pump systems. The order of installation is Flexible Join > Check Valve > Gate Valve. This sequence must be appropriate and the installation of the check valve must not be reversed, the arrow must face upwards. If it is reversed, the direction of the water flow is actually closed and can result in the rupture of the check valve itself or even all of the pipelines.
Then what happens if we miss the use of this check valve? The disadvantage if backflow occurs is that it can cause the pump impeller to be damaged.