A mechanical device designed to bypass flow in the result of an overpressure condition at the outlet port of the pump. Click here to view our How it Works video on this topic.

The rotating assembly in a positive displacement pump, typically driven directly by the motor or other driver.

For pumps, this is hollow space where the rotating shaft enters the stationary pump housing. While the term originated from shaft packing that was “stuffed” around the shaft to create a seal, today a pump’s stuffing box is often fitted with a mechanical seal, lip seal, or O-Pro® seal instead of packing.

Adaptable Viking Pump port design that offers a variety of port sizes and types, enabling flexibility when connecting pumps to piping.

A Viking Pump bracket engineered to accommodate various seal options including O-Pro® Guard seals, single component seals, cartridge lip seals, cartridge single and double mechanical seals. It also includes stainless steel window guards for protection from rotating parts.

A free-rotating part of a rotary positive displacement pump driven by the rotor