Valves and valve actuation – With correlated flow path – Pipe coupling or union
Patent
1995-11-27
1997-06-17
Michalsky, Gerald A.
Valves and valve actuation
With correlated flow path
Pipe coupling or union
137614, 137215, F16K 322
Patent
active
056390637
ABSTRACT:
A trouble-shooting shut-off valve includes an inlet-tail-tube mountable directly into a compression-fitting outlet socket of a defective shut-off valve, thus positioning the trouble-shooting valve immediately downstream from the defective valve in line in series with the defective valve. An inlet-tail-tube fitting is mounted onto an upstream end of the valve housing as a component of the valve. This fitting has an axial bore forming an upstream extension of an inlet passage in the valve housing. The inlet-tail-tube projects axially from this fitting adapted for insertion directly into such a socket in the defective valve. The inlet-tail-tube has a diameter equal to the outside diameter of flexible plumbing tubing, referred to as flex tube, and is formed of material suitable for making a compression connection thereto. An inlet end termination of the inlet-tail-tube is flat for seating down squarely into the outlet socket of the defective valve. A downstream end of the valve housing has an exteriorly-threaded boss with a valve outlet passage extending through this boss to a downstream termination of the boss. A truncated conical surface within this downstream termination encircles the outlet passage and flares outwardly adapted for engaging a compression sleeve with inward wedging action when a compression nut is screwed onto external threads of the boss for squeezing the compression sleeve in making a compression connection with a downstream flex tube.
REFERENCES:
patent: 958073 (1910-05-01), Barnstead
patent: 3337181 (1967-08-01), Wennerstrom
patent: 4508130 (1985-04-01), Studer et al.
patent: 4687180 (1987-08-01), Simonelli et al.
patent: 4691726 (1987-09-01), Studer et al.
patent: 5246200 (1993-09-01), Barker
patent: 5480122 (1996-01-01), Barker
Michalsky Gerald A.
Parmelee G. Kendall
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