Combination shut-off and test-injection valve
First Claim
1. A combination shut-off and test-injection valve comprising;
- a valve body having an axially aligned inlet end and outlet end adapted for connection to a fluid line or conduit, a main fluid flow passageway extending from end to end, a shut-off valve chamber in fluid communication with said main fluid flow passageway, and an outwardly extending tubular extension adapted at its outer end for connection to diagnostic and injection devices and having an interior fluid passageway in fluid communication with said main fluid flow passageway at a location laterally spaced from said shut-off valve chamber to define a test-injection valve passageway,shut-off valve means having a portion movably disposed in said shut-off valve chamber movable between an open position allowing fluid flow through said through said main fluid flow passageway from either end and a closed position closing off fluid flow through said main fluid flow passageway and having a stem portion extending outwardly through a side wall of said valve body,means on the outer end of said stem portion for moving said shut-off valve means between the open and closed positions,seal means between said stem portion and said valve body for preventing fluid leakage from said main fluid flow passageway around said stem portion to the exterior of said valve body,test-injection valve means mounted in said test-injection valve passageway at the outer end of said tubular extension and having a spring biased plunger mechanism movable between a normally closed position preventing communication between said main fluid flow passageway and the exterior of said body and an open position allowing fluid communication between said main fluid flow passageway and the exterior of said body, andsaid shut-off valve means and said test-injection valve means being independently operable whereby said shut-off valve means may be operated to open or close fluid flow through said valve body and isolate portions of the fluid system in which it is installed and said test-injection valve means may be connected to various test equipment and injection devices for diagnosing and cleaning the fluid system and its components during normal operating conditions of the fluid system or in an isolated condition.
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Accused Products
Abstract
A combination shut-off and test-injection valve has a valve body with an inlet end and an outlet end adapted for connection to a fluid line or conduit and a fluid flow passageway extending from end to end. A shut-off valve in the body is movable between an open position allowing fluid flow through the body and a closed position closing off fluid flow through the body. The combination valve has a test-injection valve in fluid communication with the fluid flow passageway adjacent the shut-off valve which is movable between a normally closed position preventing communication between the fluid flow passageway and the exterior of the body and an open position allowing fluid communication between the fluid flow passageway and the exterior of the body. The shut-off valve and the test-injection valve operate independently whereby the shut-off valve may be operated to open or close fluid flow through the valve body and isolate portions of the fluid system in which it is installed and the test-injection valve may be connected to test equipment, injection devices, and the like for diagnosing and cleaning the fluid system and its components during normal operating conditions or in an isolated condition. The combination valve may be left in the system after installation and will not interfere with normal operations as long as the shut-off valve remains open and will allow subsequent diagnosing and testing of the system and its components.
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Citations
11 Claims
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1. A combination shut-off and test-injection valve comprising;
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a valve body having an axially aligned inlet end and outlet end adapted for connection to a fluid line or conduit, a main fluid flow passageway extending from end to end, a shut-off valve chamber in fluid communication with said main fluid flow passageway, and an outwardly extending tubular extension adapted at its outer end for connection to diagnostic and injection devices and having an interior fluid passageway in fluid communication with said main fluid flow passageway at a location laterally spaced from said shut-off valve chamber to define a test-injection valve passageway, shut-off valve means having a portion movably disposed in said shut-off valve chamber movable between an open position allowing fluid flow through said through said main fluid flow passageway from either end and a closed position closing off fluid flow through said main fluid flow passageway and having a stem portion extending outwardly through a side wall of said valve body, means on the outer end of said stem portion for moving said shut-off valve means between the open and closed positions, seal means between said stem portion and said valve body for preventing fluid leakage from said main fluid flow passageway around said stem portion to the exterior of said valve body, test-injection valve means mounted in said test-injection valve passageway at the outer end of said tubular extension and having a spring biased plunger mechanism movable between a normally closed position preventing communication between said main fluid flow passageway and the exterior of said body and an open position allowing fluid communication between said main fluid flow passageway and the exterior of said body, and said shut-off valve means and said test-injection valve means being independently operable whereby said shut-off valve means may be operated to open or close fluid flow through said valve body and isolate portions of the fluid system in which it is installed and said test-injection valve means may be connected to various test equipment and injection devices for diagnosing and cleaning the fluid system and its components during normal operating conditions of the fluid system or in an isolated condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A combination shut-off and test-injection valve comprising;
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a generally rectangular valve body having an externally threaded inlet end and outlet end configured to receive a compression nut and compression pinch sleeve for sealable connection to tubular fluid lines or conduit, a main fluid flow passageway extending from end to end, a valve chamber in fluid communication with said main fluid flow passageway and perpendicular thereto, and an outwardly extending tubular extension adapted at its outer end for connection to diagnostic and injection devices and having an interior fluid passageway in fluid communication with said body main fluid flow passageway at a location laterally spaced from said valve chamber to provide a test-injection passageway, shut-off valve means in said valve chamber movable between an open position allowing fluid flow through said main fluid flow passageway from either end and a closed position closing off fluid flow through said main fluid flow passageway, test-injection valve means in said tubular extension in fluid communication with said body main fluid flow passageway adjacent said shut-off valve means and having a spring biased plunger mechanism movable between a normally closed position preventing communication between said main fluid flow passageway and the exterior of said valve body and an open position allowing fluid communication between said main fluid flow passageway and the exterior of said body, said shut-off valve means and said test-injection valve means being independently operable whereby said shut-off valve means may be operated to open or close fluid flow through said main fluid flow passageway and said test-injection valve means may be connected to test equipment and injection devices for diagnosing and cleaning the fluid system and components in the fluid line or conduit in which said valve body is connected.
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11. A combination shut-off and test-injection valve comprising;
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a valve body having an axially aligned inlet end and outlet end adapted for connection to a fluid line or conduit, a main fluid flow passageway extending from end to end, and a shut-off valve chamber in said body and in fluid communication with said main fluid flow passageway, shut-off valve means in said body shut-off valve chamber movable between an open position allowing fluid flow through said body from either end and a closed position closing off fluid flow through said body, an outwardly extending tubular extension on said valve body adapted at its outer end for connection to diagnostic and injection devices and having an interior fluid passageway in fluid communication with said body main fluid flow passageway at a location laterally spaced from said shut-off valve chamber, test-injection valve means mounted in said test-injection passageway at the outer end of said tubular extension and having a spring biased plunger mechanism movable between a normally closed position preventing communication between said main fluid flow passageway and the exterior of said body and an open position allowing fluid communication between said main fluid flow passageway and the exterior of said body, said shut-off valve means and said test-injection valve means being independently operable whereby said shut-off valve means may be operated to open or close fluid flow through said valve body and isolate portions of the fluid system in which it is installed and said test-injection valve means may be connected to various test equipment and injection devices for diagnosing and cleaning the fluid system and its components during normal operating conditions of the fluid system or in an isolated condition.
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Specification