Since there is no possibility of the pumped liquid leaking out, these pumps are suitable for handling liquid that is harmful to humans, explosive or flammable liquid, expensive liquid, corrosive liquid, etc.
No contact with open air
Since no outside air enters the pump, they are suitable for operation in a vacuum, or for handling liquids whose quality changes when exposed to the outside air.
Compatible with a wide range of pressures and temperatures
No shaft seal means it is easy to manufacture pumps that can handle systems with high pressure, high-temperature liquids, low-temperature liquids, high melting point liquids, and more.
No lubrication needed
Because these pumps do not require lubrication oil, there is no contamination of the transported fluid, and the hassles of adding oil is unnecessary.
Compact, light weight and space-saving
Since the motor shaft also serves as the pump shaft, the design is compact, lightweight, requires minimal installation space, and is easy to overhaul.
Operation noise is minimized because there is no fan to cool the motor.