Floor Type Pressure Relief Valves
Overview
Floor Type Pressure Relief Valves are for placing in the bottom of tanks to keep empty tanks from floating when there is an excess of ground water underneath and around them. When this condition exists, the outside water pressure will raise the cover of the valve and allow the water to enter the tank and equalize pressures inside and outside of the tank, preventing the tank from floating.
The valves are furnished in either 4” diameter or 6” diameter, and are 8” in length. Valves will accept C-900 PVC to provide longer length if desired. Pressure Relief Valves are so constructed that neither the cover nor strainer can become separated from the body of the valve, due to ground water pressure around the tank. However, when necessary, both may be easily removed by turning them to the right or left to free them from the locking lugs cast on inside of body. The cover weighs approximately 6 pounds and starts to open at a head of approximately 9” of water.
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