Wall Type Pressure Relief Valves
Overview
The Wall Type Pressure Relief Valve is for side wall installation in tanks and digesters. The valve has a 4” or 6” flanged end for connection to a flanged wall pipe. Iron body, bronze mounted, it is equipped with a soft, composition rubber seat, so that if particles of grit lodge on it, the head of liquid in the tank will still force the flap closed tightly, and prevent seepage of liquid out into the ground. The seating material has been chosen for its resistance to deteriorating effect of the sewage.
A special 4” or 6” wall pipe for use with the wall type pressure relief valve is also sold by Clow. It is a gray iron flange and plain end wall pipe with an internal grate. The flange is faced and tapped for studs to 125 pound template. The wall pipe is available in a 12” length. The plain end can be cut off to obtain shorter lengths.