MD Pumps: Part 2

After completing this course, the licensee should be able to: 

• Name the parts that make up the power end of a reciprocating pump and describe their operation.

• Define the terms single-acting pump and double‐acting pump when given the piston ratio and motor air supply.     

• Explain how the pumped fluid lubricates a reciprocating pump.

• Calculate the discharge pressure of an air-driven pump

• Compare simplex and duplex pumps

• Tell what pumps are used for metering applications.

• Describe metering pump lubrication techniques.

• Name the parts of a diaphragm metering pump and state the function of each.

• Explain the operation of a diaphragm metering pump.

• Describe the operation of a flexible-tube pump.

• Give an application for a progressing-cavity pump.

• Name one disadvantage of a sealless magnetic- drive pump.

• Explain how to prepare a new centrifugal pump for operation.

• Tell which parts of a reciprocating slurry pump require the most maintenance.

• Tell why slight leakage through shaft seals is necessary.

• Name the type of stuffing box required for pumps operating under suction lift conditions.

• Give a typical application each for cotton, Teflon® and aluminum packing.

• Describe the procedure for replacing pump packing.

• Describe a packingless seal.

• Name three types of antifriction bearings.

• Name three factors to consider when preparing pump lubrication schedules.

• Describe a typical application for both felt and synthetic bearing seals.

• Tell the two major maintenance problems encountered in rotary pumps.