Valve cartridge

Details Valve cartridge Valve cartridge

1995-03-13

1997-07-29

Michalsky, Gerald A.

Fluid handling

Removable valve head and seat unit

137269, 13762564, 13762565, F15B 13044

Patent

active

056513879

ABSTRACT:
An electromagnetic pilot valve cartridge which is directly mountable on a pilot pressure activated directional valve and which has a valve barrel for interconnection with a socket portion of a directional valve housing. The valve barrel has laterally disposed fluid communication openings respectively coupled to a pressure fluid passage and a drain passage in the directional valve housing. A pilot flow opening is disposed at an end portion of the valve barrel and is separated from the laterally disposed fluid communication openings by a seal ring, and a flow restricting device is associated with the pilot flow opening. The flow restricting device includes an end cap mounted on the end portion of the valve barrel and a flow restricting opening and an annular shoulder for axially supporting the seal ring.

REFERENCES:
patent: 3736958 (1973-06-01), Rostad
patent: 4478245 (1984-10-01), Bender
patent: 4548383 (1985-10-01), Wolfges
patent: 4947893 (1990-08-01), Miller et al.
patent: 5156184 (1992-10-01), Kolchinsky
patent: 5163477 (1992-11-01), Takano et al.

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