Our bridge valve is a valve used for ponds, reservoirs and swimming pools.
Basically it is a valve whose operation is carried out by a threaded spindle that ascends a bridge that has a threaded upper part. This spindle is joined by a plate and its screws to a disc or plate with a rubber closing gasket that rises and falls as the valve is operated, closing and opening. This plate closes the passage of water in a seat that is horizontal.
It has a cast lever or handle (optional) to operate the valve.
It is like the valve in FIG. 15 but changing the base legs with a drilled flange according to UNE-EN 1092-2 PN-10.