Air valves are generally provided in pressure pipes of water supply (A) At pipe junctions (B) At summits (C) At low points (D) Near service pipes

Air valves are generally provided in pressure pipes of water supply 

(A) At pipe junctions 

(B) At summits 

(C) At low points 

(D) Near service pipes 

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1 Answer

Answer :

(B) At summits 

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