High-pressure pumps run smooth and quiet. Continuous-contact pumps feature helical gears that do not trap fluid as they rotate, as is the case with conventional gear pumps. This minimizes pressure ripple and gives high efficiency and quiet operation at speeds to 5,000 rpm. Lab tests for pressure-ripple and noise show impressive improvements in pulsation and noise curves for continuous-contact pumps, while maintaining high efficiency. Pulsation tests were conducted at 100 bar, 1,500 rpm,
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Products & Services
Gear Pumps
Gear pumps use intermeshing gears to pump various types of liquids. Typically, one gear is the driver and the other is free wheeling. The gears have very tight tolerances so that the fluid being pumped cannot pass through them. Common uses for gear pumps include high pressure, metering, and flow control applications.
Helical Gears

Helical gears are cylindrilical gears whose teeth are not parallel to the axis of rotation. The teeth are angled and appear as a segment of a helix. Helical gears can transmit power between parallel or right angle axes.

Rotary Lobe Pumps
Rotary lobe pumps are positive displacement (PD) pumps that use rotating lobes to direct flow.
Hypoid Gears

A hypoid gear is a style of spiral bevel gear whose main variance is that the mating gears' axes do not intersect. The hypoid gear is offset from the gear center, allowing unique configurations and a large diameter shaft. The teeth on a hypoid gear are helical, and the pitch surface is best described as a hyperboloid. A hypoid gear can be considered a cross between a bevel gear and a worm drive.

High Vacuum Pumps
High and ultrahigh vacuum pumps operate efficiently in the high vacuum region and develop molecular flow for highly evacuated systems.

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Product Announcements
Prince Manufacturing Corp.
Prince Manufacturing Corp.