18 July 2017

Pressure

The force that a fluid (liquid or gas) exerts uniformly in all directions within a vessel, pipe, hole in the ground, and so forth, such as […]
18 July 2017

Pressure gauge

An instrument that measures fluid pressure and usually registers the difference between atmospheric pressure and the pressure of the fluid by indicating the effect of such […]
18 July 2017

Pressure gradient

A scale of pressure differences in which there is a uniform variation of pressure from point to point. For example, the pressure gradient of a column […]
18 July 2017

Pressure relief valve

A valve that opens at a preset pressure to relieve excessive pressures within a vessel or line. Also called a pop valve, relief valve, safety valve, […]