The Under Hydrant Valve is a 6" x 4" full bore ball valve designed for installation between the hydrant pit box and the hydrant pit valve. It is manually operated by a 970mm long handle through an externally mounted right angle gear box, which allows the operator to open and close the valve from a standing position without reaching into the hydrant pit box. The Under Hydrant Valve is also supplied with an integral stoneguard strainer which is fitted inside the inlet connection flange using a securing clip.
The Under Hydrant Valve is installed between the hydrant pit box and the hydrant pit valve, so it permits the safe isolation and removal of each individual hydrant pit valve from the hydrant. It can therefore be closed if the hydrant pit valve is leaking or if major maintenance work needs to be carried out, without the need to close down the complete section of the hydrant line. This of course allows the hydrant to remain in operation while the problem valve is removed and overhauled.