Question 423General Subjects - Assistant Engineer

The correct answer is D) Two sets of valves, one set each for suction and discharge located in the water chest. This arrangement allows the reciprocating pump's liquid piston to take suction from the suction chamber and simultaneously discharge through the discharge chamber during the up and down strokes. The water chest, which is a separate chamber, contains the suction and discharge valves, enabling the liquid piston to perform the full cycle of intake and expulsion. The other options are incorrect because they do not accurately describe the valve arrangement necessary for the reciprocating pump to function as described in the question. Options A, B, and C do not provide the proper separation of suction and discharge valves to facilitate the simultaneous intake and discharge during the piston's movement.