For applications involving the transfer of fuel, oil, and other lubricants, screw and gear pumps are often the pumping technologies of choice. Unlike water-based liquids, temperature changes usually cause a change in the viscosity of these types of fluids. Because fluid thickness fluctuations have a much greater impact on centrifugal pump performance than positive displacement pumps, screw and gear pumps are often the most efficient solutions for oil and fuel.

While the gear pump is a more acceptable option for handling lubrication fluids, the screw pump design has several advantages over it. Gear pumps and screw pumps are two forms of positive displacement pumps used for specific purposes.

Advantages of screw pump:

1, slow, simple and strong design

The main and overall advantage of screw pumps may be their superior reliability. Its simple design, open construction and low speed make it a heavy-duty pump with minimal wear and tear that can operate trouble-free for years.

2. Pump raw water containing heavy solids and floating debris

Due to the open construction and the large channel between the threads, the screw pump can pump untreated sewage without the need to set up a coarse screen before the pump. Floating debris and heavy solids are simply lifted. This greatly saves equipment costs for coarse screening or maintenance!

3, can run without water

The screw pump can operate even if there is no water at the inlet. Therefore, there is no need to install expensive measures (level control, etc.) to prevent "dry rotation." Lower bearings do not need cooling.

Advantages of gear pump:

1, controlled pumping action

Gear pumps can handle fluids that are too viscous for centrifugal pumps. The pumping action is very controlled and mathematical: if you double the speed, you double the output.

2. Low speed

The output of the gear pump is independent of the discharge pressure. Since the gear pump does not have to generate centrifugal force, it can operate at much lower speeds. This makes it smoother and more controllable.

3. Best BEP

Gear pumps are self-priming, which can be a huge benefit. Their emission pressure can be very high, depending on many factors. Gear pumps have no BEP or optimal efficiency point; They are consistently efficient.

The above content is the difference between gear pump and screw pump has their own advantages, have other questions or need to consult the product price can be contactedShenzhen Oudejie Technology Co., LTD.