Filter with dual fluid pressure actuated valves on common stem

Details Filter with dual fluid pressure actuated valves on common stem Filter with dual fluid pressure actuated valves on common stem

1989-05-15

1990-06-26

Jones, W. Gary

Liquid purification or separation

Plural distinct separators

Filters

210411, 210354, B01D 2926

Patent

active

049369890

ABSTRACT:
A filter in which liquid flows through a plurality of filter elements wherein each filter element has a pair of valves for closing off the ends of the filter elements in turn for filtering and backwashing. The valves are mounted on a common stem operated by an actuator. With the actuator on, the backwashing or cleaning valve is closed and the remaining or inlet valve is open. With the actuator off, the inlet valve closes and the backwashing valve is opened.

REFERENCES:
patent: 3380591 (1968-04-01), Muller
patent: 4059518 (1977-11-01), Rishel
patent: 4612116 (1986-09-01), Hindman et al.
patent: 4636311 (1987-01-01), Litzenburger

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