Dual coaxial bidirectional valves and filter assemblies and hydr

Details Dual coaxial bidirectional valves and filter assemblies and hydr Dual coaxial bidirectional valves and filter assemblies and hydr

1975-05-16

1977-01-18

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Bi-directional flow valves

60454, 1375991, 210133, 210134, 210136, 210167, F16K 1500

Patent

active

040033970

ABSTRACT:
Dual coaxial bidirectional valves are provided for use in fluid systems such as hydrostat systems where flow can proceed in opposite directions, and which direct flow through a unidirectional or multidirectional function such as a filter assembly in such a system in the normal direction, regardless of the direction of flow in the system. The valve includes two opposed coaxial valves intercepting and controlling flow through a box junction of the fluid line with the lines leading to and from the filter assembly, in a manner such that, regardless of the direction of flow in the fluid line, flow proceeds in the same direction in the connecting fluid lines to and from the function.

REFERENCES:
patent: 3256908 (1966-06-01), Mann
patent: 3289841 (1966-12-01), Quinting
patent: 3322281 (1967-05-01), Gulick
patent: 3472380 (1969-10-01), Rosaen
patent: 3795312 (1974-03-01), Lawson
patent: 3799347 (1971-09-01), McDuffie

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