Fluid handling – With repair – tapping – assembly – or disassembly means – Tapping a pipe – keg – or apertured tank under pressure
Patent
1984-09-14
1985-11-12
Walton, George L.
Fluid handling
With repair, tapping, assembly, or disassembly means
Tapping a pipe, keg, or apertured tank under pressure
291571R, 29213E, 138 94, 138 97, F16K 4300
Patent
active
045521700
ABSTRACT:
A valve which can be inserted in an existing pipe or similar line without disconnection of the line. The valve is separable into two halves which are clamped around the line. The valve handle is then rotated to drive a cutter through the line, and to position an expandable seal across the line bore. Flow through the pipe is thus terminated to enable downstream repairs or installation of new equipment. Retraction of the seal and cutter opens the valve to reinitiate fluid flow, and the valve can thereafter be used as a conventional shutoff valve, as well as providing an auxiliary "T" connection to the line if desired.
REFERENCES:
patent: 2763282 (1956-09-01), Reedy et al.
patent: 2780244 (1957-02-01), Lee
patent: 2899983 (1959-08-01), Farris
patent: 3532113 (1970-10-01), McKean
patent: 3799182 (1974-03-01), Long
patent: 3833020 (1974-09-01), Smith
patent: 3863667 (1975-02-01), Ward
patent: 3867964 (1975-02-01), Gardner
patent: 3948282 (1976-04-01), Yano
patent: 4127141 (1978-11-01), Ledonne et al.
patent: 4205697 (1980-06-01), Gebelius
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