Liquid purification or separation – Flow – fluid pressure or material level – responsive – Discharge of treated material
Patent
1988-12-12
1990-05-08
Jones, W. Gary
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Discharge of treated material
210136, 2103231, 210453, 1374938, B01D 3530
Patent
active
049236024
ABSTRACT:
A bi-directional flow filter including a block having first and second peripheral ports with a forward line of flow through the block from the first peripheral port to the second peripheral port and a reverse line of flow through the block from the second peripheral port to the first peripheral port. A first check valve and a first filter element are disposed in the forward line of flow to allow flow only in the forward direction through the first filter element. A second check valve and a second filter element disposed in the reverse line of flow to allow fluid flow only in the reverse direction through the second filter element. First and second filter element cavities are positioned in the block in a generally side-by-side relation with the first port in one block face and the second port in the opposite block face. First and second filter elements are disposed in their respective cavities and filter in the respective forward and reverse directions fluid entering the first and second ports, respectively.
REFERENCES:
patent: 3190445 (1965-06-01), Rosaen
patent: 3322281 (1967-05-01), Gulick
patent: 3985652 (1976-10-01), Cooper
patent: 3996137 (1976-12-01), Cooper
patent: 4003397 (1977-01-01), Cooper
patent: 4009572 (1977-03-01), Cooper
patent: 4029580 (1977-06-01), Lange
Jones W. Gary
Savage Matthew O.
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