Title: Gate valve with replaceable liner

Abstract: A gate valve having a replaceable one piece bore and chest liner enclosed within a pair of mirror image castings is disclosed. The gate is cast and enveloped within molded material to cooperate with the liner in a sealing relationship.

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Inventors: Still, Robert C. (Tucson, AZ, US)

Application Number: 716669
Filing Date: 1976-08-23
Publication_date: 1977-10-04
Assignee: New Concepts, Inc. (Tucson, AZ)
Primary Class(es): 137/454.2 251/328, 251/329
Other Classes:
US Patent Ref:

2893684	Jul, 1959	Williams et al.	251/329.
2942841	Jun, 1960	Stillwagon	251/326.
3050077	Aug, 1962	Wheatley	251/328.
3164363	Jan, 1965	Williams	251/329.
3350058	Oct, 1967	Alden	251/329.
3356334	Dec, 1967	Scaramucci	251/327.
3749114	Jul, 1973	Johnstone et al.	251/329.

Other Refs:
Primary Examiner: Rosenthal, Arnold
Assistant Examiner:
Attorney: Cahill, Sutton & Thomas