Fluid handling – Processes – Cleaning – repairing – or assembling
Patent
1988-09-30
1989-07-04
Walton, George L.
Fluid handling
Processes
Cleaning, repairing, or assembling
92 98D, 251 3003, 251 3005, 251 46, F16K 4300, F16K 3106
Patent
active
048441120
ABSTRACT:
An electromagnetically actuated, pilot operated valve having a nonmetallic body with a pressure responsive diaphragm for opening the main valve and defining, in cooperation with a guide member, a pilot chamber having an armature/pilot valve member movably received thereon. The guide member has a bleed-supply hole formed therein and is secured to the body by an annular member attached to the body by nonmetallic weldment and integrally defining a cup into which a solenoid coil is received over the guide member and potted by liquid-cast insulating material. An armature guide member-diaphragm subassembly has the guide with armature received therein with the diaphragm peripherally secured thereto by a ring pressed thereover, the ring interfitting with cooperating body surfaces to define restricted passage to filter flow to the pilot chamber bleed hole.
REFERENCES:
patent: 3544062 (1970-12-01), Murray
patent: 3593957 (1971-07-01), Dolter et al.
patent: 3672627 (1972-06-01), McCarty, Jr. et al.
patent: 3917218 (1975-11-01), Marocco
patent: 4003548 (1977-01-01), Stradella et al.
patent: 4175590 (1979-11-01), Grandclement
patent: 4178573 (1979-12-01), Swanson
patent: 4500067 (1985-02-01), Zukausky
patent: 4534537 (1985-08-01), Zukausky
Hurst Edward D.
Pick James M.
Swanson Wesley S.
Eaton Corporation
Johnston R. A.
Walton George L.
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