Prevents escape of foul sewer gases from a water closet:
AAir gap
BVent pipe
CGully trap
DP trap
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Related Questions:
Nahni trap is popularly known as:
The function of an air vessel in a reciprocating pump is to:
The automatic device which allows water to go in one direction-only
Cowl is provided at:
The valves installed on the delivery side of the pumping set so as to prevent the back flow of stored or pumped water when the pump is stopped is called: