Plunger Pump
Plunger pumps are positive displacement pumps designed for high-pressure applications. They use a stationary high-pressure seal and a smooth cylindrical plunger, providing reliable performance, precise flow control, and long service life in demanding industrial systems.
Overview
A plunger pump is a type of positive displacement pump in which a smooth cylindrical plunger moves back and forth through a stationary high-pressure seal. This design allows the pump to operate at much higher pressures compared to piston pumps.
Operating Principle
As the plunger retracts, fluid is drawn into the cylinder through the inlet valve. When the plunger advances, the fluid is displaced through the outlet valve at high pressure. The stationary seal ensures excellent pressure resistance and reduced wear.
Design Characteristics
- Stationary high-pressure seal
- Smooth cylindrical plunger movement
- Positive displacement pumping action
- High efficiency at elevated pressures
Comparison with Piston Pumps
- Plunger moves through a fixed seal, unlike piston pumps where the seal moves with the piston
- Higher pressure capability than piston pumps
- Improved sealing performance and durability
Applications
- High-pressure cleaning systems
- Oil and gas industry
- Water jetting and injection systems
- Chemical processing
- Industrial fluid transfer