Pressure gauge cocks provide the opportunity to either vent the connected pressure gauge according to the position of the handle (venting position), i.e. put it into a pressure-free state, or to vent the pressure measuring instrument under pressure (operating position) or to let the medium escape (blow position). For pressures higher than those in the data sheet, pressure gauge valvemust be used. Test connection version
Pressure gauge cock with test connection are intended for the simultaneous connection of operating pressure measuring instruments and test connection pressure gauges to the pressure pipeline.

With this version of the pressure gauge cock, the third route, which leads to the outside at the standard version, is used asconnection for a test connection pressure gauge. A fourth position of the handle enables the simultaneous connection of the operating and the test connection pressure gauges to the pressure pipeline.