The vent valve provided in a liquid handling centrifugal pump is
(A) Generally a needle valve
(B) Used to release any gases that might be vapour locking the pump
(C) Helpful in easy removal of samples
(D) All (A), (B) and (C)
(A) Generally a needle valve
(B) Used to release any gases that might be vapour locking the pump
(C) Helpful in easy removal of samples
(D) All (A), (B) and (C)