Differential pressure bypass control system is composed of a differential pressure controller PC-1 and electric control valve TV-1. Controller of PC-1 detection is the role of supply and return water pressure difference andthe set value

For comparison, and according to the results of TV-1 electric valve to control the opening, thus a constant watersupply and return water pressure system.

Differential pressure bypass electric control valve can also be linked with air conditioning air conditioning unit,when the power is cut off, and close the electric control valve differential pressure bypass.