Pressure due to elevation of water. Equals 0.433 pounds per square inch (PSI) per foot of elevation. Back pressure. (Approximately 0.5 PSI is required to lift water 1 foot in elevation)

the pressure above gravity at the head of the column. Expressed in psig, bar, atm, or MPa.

Expression of a pressure in terms of the height of fluid. P = ypg, where p is fluid density and y is the fluid column height.

The discharge pressure in the system.

Refrigerant pressure on the discharge (high pressure) side of the system; between the compressor discharge to the condenser

A term used to describe the hot gas pressure on the outlet side of the refrigeration compression. ( 020)

Expression of a pressure in terms of the height of fluid, r = yrg, where r is fluid density and y = the fluid column height. g = the acceleration of gravity.

discharge pressure of a pump in feet of liquid being pumped. HEAD x SG = psi discharge pressure 2.31

Same as "discharge pressure" in an A/C system, the amount of pressure in the compressor discharge line.

Pressure in the condensing side of a refrigerating system.

Maximum amount of pressure against which a pump can move fluid.