Metering Pumps

A metering pump is a special class of reciprocating pump. It is used for injecting very small, precisely controlled volumes of liquids into products or…

Plunger Pumps

Plunger pumps are used for very high pressure applications, 1000 psig or greater. Examples are glycol circulation and amine circulation in gas plants. See Figure…

Piston Pumps

Piston pumps are used for moderately high pressures. They are used in some special services, such as emergency and shutdown services, where pipelines must be…

Reciprocating Pumps

Positive displacement pumps move a fixed volume of liquid per unit of time. Although less common than centrifugal pumps, they are used for certain special…