This course is designed to familiarize participants with the basic parts and operation of several types of reciprocating positive displacement pumps. After completing this course, participants should be able to describe the general operation of the following types of pumps: single-acting piston pumps, single-acting plunger pumps, double-acting piston pumps, duplex piston pumps, motor-driven diaphragm pumps, and air-operated diaphragm pumps. Participants should also be able to describe a general procedure for starting up and shutting down a typical reciprocating pump, and they should be able to explain the function and operation of a relief valve.