50 and 63 mm diameter, plastic or steel case painted black. ABS window. Pressure system and connections in brass. Accuracy CL 1.6.

The typical application is to verify the pressure of the expansion vessels of the water pumps that are used in insulated houses that have to increase the water pressure that comes to them, either because the water line does not have enough pressure, and because they take it from a well of water.

The outlet is modified to fit the automotive pneumatic valve that the expansion vessels have.

A leather case is provided to protect it when not in use.