The WB400 Conventional valves can be used on systems where the discharge is relatively simple. The pressure in the discharge system can be atmospheric, at a constant level or to a maximum of 10% of the set pressure. This is brand new and still in the crate from when it was shipped from the UK.
The gas/vapour disc can be distinguished by the flat underside, unlike the cone profile of the liquid disc.
A selection of accessories is available to suit system requirements. These include:
•Ferrule (government ring)
•Auxiliary back-up piston