Reciprocating Pumps

RECIPROCATING PUMPS

Principle

A Reciprocating Pump converts the mechanical energy into pressure energy by sucking the liquid into a cylinder, in which a piston is reciprocating. It uses piston or plunger to positively displace the liquid during each stroke of the piston. The piston is moving backwards and forwards (i.e., to and fro), exerting a thrust on the liquid, thereby increasing its pressure energy.

Due to a number of sliding parts, greater attention for lubrication, maintenance and repairs is required.

1. TYPES OF RECIPROCATING PUMPS

The reciprocating pumps may be classified as:

 • According to the Contact of Liquid with One Side or Both Sides of the Piston

1. Single Acting Reciprocating Pump

2. Double Acting Reciprocating Pump

 • According to the Number of Cylinders

1. Single Cylinder Reciprocating Pump

2. Double Cylinder Reciprocating Pump