A piston pump is a type of positive displacement pump where the high-pressure seal reciprocates with the piston. Piston pumps can be used to move liquids or compress gases. They can operate over a wide range of pressures. … Piston pumps can also deal with viscous media and media containing solid particles.

These pumps are positive displacement pump and can be used for both liquids and gases. Piston pumps are basically of two types: Axial piston pumps. Radialpiston pumps.

These positive displacement pumps have an expanding cavity on the suction side and a decreasing cavity on the discharge side. … Diaphragm valves are used topump hazardous and toxic fluids. Piston pumps displacement pumps – usually simple devices for pumping small amounts of liquid or gel manually.