5-Valve Manifold Direct Mount

A 5-way manifold valve is equipped with two block valves, one equalizing valve, and two vent or test valves. The block valves on the high and low-pressure sides are identified by blue handles, the equalization valve by a green handle, and the bleed valves by red handles.

In standard operating conditions, the block valves stay open, while the bleed and equalizing valves are maintained closed. A common application of a 5-way manifold valve is in a differential pressure transmitter. When testing the transmitter’s zero, the block valve is shut, and the equalizing valve is opened. For calibration involving 3 or 5-point calibration, the test valve is connected to a pressure generator once pressure equalization has been achieved.