Title: Condition responsive valve construction

Abstract: A condition responsive valve construction having a housing provided with an inlet and an outlet leading to and from a chamber therein. A self-contained valve seat and movable valve member unit is removably disposed in the chamber to control the interconnection between the inlet and the outlet. Condition responsive means are carried by the housing for controlling movement of the valve member relative to the valve seat in relation to the condition sensed by the condition responsive means. The self-contained unit is either a direct acting unit or a reverse acting unit while still being adapted to be operated by the same condition responsive means whereby the condition responsive valve construction can be either direct acting or reverse acting, depending upon the self-contained unit removably disposed in the chamber thereof.

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Inventors: Bible, Harley V. (Maryville, TN, US)
Moon, Jr., William T. (Knoxville, TN, US)

Application Number: 516429
Filing Date: 1974-10-21
Publication_date: 1976-02-10
Assignee: Robertshaw Controls Company (Richmond, VA)
Primary Class(es): 137/269 236/99R
Other Classes:
US Patent Ref:

646428	Apr, 1900	Hardie	137/505.
757502	Apr, 1904	Royle	137/505.
2885173	May, 1959	Dobrick	137/510.
3319649	May, 1967	Cummins	137/505.
3561468	Feb, 1971	Sugde, Jr.	137/269.

Other Refs:
Primary Examiner: Schwadron, Martin P.
Assistant Examiner: Miller, Robert J.
Attorney: Candor, Candor & Tassone