Screw pumps are positive displacement pumps that use at least one screw to transfer fluids. Screw pumps are often used with liquids that contain solid matter, such as sludge, filter cakes and other waste materials. In addition to pumping high viscosity fluids, screw pumps are also used in water and wastewater treatment applications.
Several models of screw pumps are available. Many models are either hydraulic or seal-less. A hydraulic screw pump uses a sealing element for the peripheral edge of the rotatory screw. Screw pumps are used in a wide range of industries, including agriculture, automotive, pharmaceutical, marine and military. Before you buy screw pumps, consider the following:
1. Use rotary screw pumps when pumping low and high viscosity fluids.
2. Order high-pressure screw pumps when the pump will be full submerged in a fluid.
3. Purchase screw vacuum pumps for complex applications.
Order rotary screw pumpsRotary screw pumps are positive displacement pumps that transfer fluid along an axis. These pumps are ideal when working with high and low viscosity fluids. Rotary screw pumps are commonly used in irrigation and agricultural applications.
Implement high-pressure screw pumpsHigh-pressure screw pumps are designed to be fully immersed in a fluid during operation. It's important to never run a high-pressure pump without liquid. These screw pumps are ideal for transferring filtered lubricating fluids, such as oils and emulsions.
Find a vacuum screw pump supplierA screw vacuum pump is suitable for complex applications, such as the pharmaceutical and chemical industries. These pumps are also ideal for any application that requires a high-vacuum level. Screw vacuum pumps offer oil-free operation and a simple design.
Buy a triple or twin screw pumpScrew pumps that use two or three rotating screws are referred to as twin or triple screw pumps. The screws function together, rotating axially clockwise or counterclockwise. The majority of screw pumps use at least two screws.
- Screw pumps that are used in water and wastewater treatment applications require a lower power drive than screw pumps used to transfer liquids with solid materials, such as municipal sludge.