Follett PB501731

PIN VALVE STOP

A stop is a part designed to restrict the movement of a rotary mechanism, linear (sliding) mechanism or its components. It protects a mechanism from loss of adjustment or damage due to extreme movement. A stop or stopper may also be designed to calibrate and halt the flow of solids, liquids or gases.

Valves are widely used in different restaurant equipment designs. A valve is a device that regulates, directs or controls the flow of a fluid (gases, steam, liquids, fluidized solids, or slurries) by opening, closing, or partially obstructing various passageways. In an open valve, fluid flows in a direction from higher pressure to lower pressure. 

Valves may be operated manually, either by a handle, lever, pedal or wheel. Valves may also be automatic, driven by changes in pressure, temperature, or flow, allowing control over a variety of operational requirements.