Question: What is the operating pressure differential of a 2 port valve?

Answer:

Maximum operating pressure differential is the allowable pressure difference between the inlet and outlet pressure during operation. When outlet pressure is 0 psi, the maximum operating pressure differential value is the upper limit for supply pressure.
(Ex) Valve with 43 psi maximum operating pressure
O 43 psi inlet pressure; 0 psi outlet pressure
X 72 psi inlet pressure; 0 psi outlet pressure
∗In the example marked "X", the pressure differential is 72 psi, and therefore cannot be used. At a maximum operating pressure differential of 43 psi, the operation pressure differential must be less 43 psi. (This is a common issue in air blowers)

Minimum operating pressure differential is the pressure differential required for stable operation of the valve (the differential between inlet and outlet pressure).
(Ex) A valve with 100 psi maximum operating pressure differential and 3 psi minimum operating pressure differential
O Inlet: 100 psi; Outlet: 0 psi
O Inlet:    3 psi; Outlet: 0 psi
X Inlet:   43 psi; Outlet: 41 psi
∗In the example marked above as X, the maximum working pressure differential is not an issue, however because there is only a pressure differential of 2 psi the valve will not function properly.

Last update: 5/12/2020