Fluid handling – Convertible – Reversible check
Patent
1975-07-16
1976-11-02
Cline, William R.
Fluid handling
Convertible
Reversible check
251 11, 251367, 13762548, F16K 2704
Patent
active
039890589
ABSTRACT:
A condition responsive valve construction having a first housing provided with an internal chamber and an inwardly directed shoulder projecting into the chamber and defining a first valve seat on one side thereof and a spring seat on the other side thereof. An axially movable valve means is disposed in the chamber for controlling the valve seat. A spring is disposed between the spring seat and the valve member to tend to move the valve member in one axial direction in the chamber. A condition responsive device is carried by the housing and is operatively interconnected to the valve member to move the valve member in the other axial direction upon an increase in the sensed condition. One or more additional housing can be added to the first housing in stacked aligned relation therewith and with each new housing having a valve seat arrangement to be controlled by the valve member.
REFERENCES:
patent: 3163175 (1964-12-01), Pearson
patent: 3199538 (1965-08-01), Anthon
patent: 3381469 (1968-05-01), Schwartz
patent: 3511276 (1970-05-01), Jessen et al.
patent: 3719199 (1973-03-01), Mentink
patent: 3756083 (1973-09-01), Tatsutomi et al.
patent: 3841551 (1974-10-01), Ota
patent: 3887159 (1975-06-01), Obermaier et al.
Jackson Byron L.
Wagner Joseph P.
Cline William R.
Robertshaw Controls Company
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