It is a gas interlock system that cuts off the supply of gas to appliances if the commercial kitchen ventilation system stops working.
And it is also a gas proving system is required if ANY gas appliance does not have flame devices fitted.
The Ventam 85 gas proving system is supplied with the gas proving valve to the size you require and also with either an extract fan pressure switch kit or a fan motor current monitor.
The gas proving system valve assembly includes main gas valve, weep bypass valve and gas proving pressure switch.
