Lang K9-50312-40

SPRING PISTON/WASHER

A piston is a component part of reciprocating motors, reciprocating pumps, gas compressors and pneumatic cylinders, among other similar mechanisms which are widely used in restaurant equipment. The piston is the moving component that is within a cylinder and is sealed by piston rings (o-rings, gaskets, etc.). The piston within the pump compresses and ejects a gas or liquid.

A spring is an elastic object that stores mechanical energy. Springs are typically made of spring steel. There are many spring designs. In everyday use, the term often refers to coil springs. When a conventional spring, without stiffness variability features, is compressed or stretched from its resting position, it exerts an opposing force approximately proportional to its change in length.

A washer is a thin plate (typically disk-shaped, but sometimes square) with a hole (typically in the middle) that is normally used to distribute the load of a threaded fastener, such as a bolt or nut. Other uses are as a spacer, spring (Belleville washer, wave washer), wear pad, preload indicating device, locking device, and to reduce vibration (rubber washer). Spring washers, which have axial flexibility are used to prevent fastening or loosening due to vibrations. Locking (lock) washers prevent fastening or loosening by preventing unscrewing rotation of the fastening device.