OPEN/CLOSE priority valve VVAZ

This priority valve is used in OPEN/CLOSE controls. There it connects two CO2 OPEN lines or one compressed air line and one CO2 OPEN line. Furthermore, two CO2 CLOSE lines or one compressed air line and one CO2 CLOSE line are interconnected. Reciprocal venting must take place in the control valves for the OPEN/CLOSE function.

In normal state, the VA inlet is connected to the CA outlet, and VZ inlet to CZ outlet. When pressure is admitted to the CO2A inlet, the valve reverses, connecting the CO2A inlet to the CA outlet and the CO2Z inlet to the CZ outlet. The VA and VZ inlets will be closed off. The same applies when pressure is admitted to the CO2Z inlet.

The CO2 inlets are controlled by OPEN/CLOSE combination release valves, the VA/VZ inlets e.g. by hand lever valve HH5/2.

For pipe connection of the valve, six male connectors 1/8″ (z. B. B1-6-1/8) will be required additionally.

The design of the SHEVS may require reliable venting of the piping.

    Technical Data

    • Control pressure for CO2 inletsmin. 4 bar
    • Maximum operating pressure 60 bar
    • Ambient temperature range: -25 °C to +110 °C
    • Nominal bore (free cross-section) of the valve 4 mm

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