ZB-20 Shut-off valve for the Du20 gas pipeline, 3/4'' coupling connection
Shut-off valves type ZB are fast closing globe valves for use with gas detectors (gas detection systems).
They are opened only manually and closed with an electric impulse (12VDC) or manually with a button. Both the opened and closed positions do not require power supply.
Activation of the valves – i.e. immediate cut-off of gas supply to a device or installation – results from electric impulse from the gas detection system upon gas concentration exceeding the preset threshold..