Check Valves are Installed

Answer: C. Both A and B 

Check valves are installed on the delivery side of the pumping set and at the interconnections between polluted water systems and a potable water system.

Solution 

Check valve is also known as reflux valve or non returning valve. Check valves are installed on the delivery side of the pumping set and at the interconnections between polluted water systems and a potable water system.

• Check valve is provided at the delivery point of the pipeline which draws water from the pump.
• Check valve allows the water to flow in one direction only.

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