Figure 4-2. Schematic diagram showing operation of reciprocating pump.

Figure 4-2. Schematic diagram showing operation of reciprocating pump.

b. The pump discharge assembly is mounted on

pot (B, fig. 4-2 ). It closes to prevent discharged

the side of the diaphragm opposite the suction

water from returning to the diaphragm pot on the

assembly. It controls the fluid movement at the

upward stroke of the diaphragm (A, fig. 4-2).

outlet side of the pump. It consists mainly of a

c. An accumulator is mounted on the suction

check valve mounted in a housing. This check valve

check valve housing. This accumulator reduces the

allows water to flow out of the pump as the

surging of the fluid as the pump diaphragm

diaphragm is forced downward into the diaphragm

changes stroke direction. At the end of the intake