Hydrostatic relief valve

Details Hydrostatic relief valve Hydrostatic relief valve

1979-11-13

1981-06-30

Adee, John

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Check valve

210169, 210315, 137544, B01D 3502

Patent

active

042761638

ABSTRACT:
Apparatus is disclosed for preventing the buildup of excessive water pressure underneath a water tank, tub or spa which is placed in the ground while at the same time preventing the inflow of waste particles or the outflow of water from the tank, tub or spa. The apparatus includes a pressure sensitive relief valve in combination with a multiple stage filtering system. The filtering system includes a central collection tube wrapped with filter material, around which filtering particles are packed, all of which are enclosed in a filter cage. The valve unit is positioned such that it draws only from the collection tube. Means are provided for securing the assembly to the underside of the water tank.

REFERENCES:
patent: 2495754 (1950-01-01), Nance
patent: 2750047 (1956-06-01), Hasbroock
patent: 3247968 (1966-04-01), Miller
patent: 3310173 (1967-03-01), Sosowea
patent: 3312349 (1967-04-01), Rosaen
patent: 3867289 (1975-02-01), Ortega

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