Piercing valve for tapping pipelines

Details Piercing valve for tapping pipelines Piercing valve for tapping pipelines

1975-02-18

1976-08-10

Schwadron, Martin P.

Fluid handling

With repair, tapping, assembly, or disassembly means

Tapping a pipe, keg, or apertured tank under pressure

F16K 4300, F16K 5100

Patent

active

039735842

ABSTRACT:
Upper and lower blocks with registering grooves are assembled about a pipeline with an upper block piercing needle moved downwardly piercing the pipeline. The piercing needle is then moved upwardly providing communication through the pipeline pierced hole and into a transfer passageway of the upper block. A resilient O-ring is positioned within an annular chamber spaced outwardly of a lower portion of the piercing needle compressed upwardly against the upper block and downwardly against the pipeline to seal the upper block groove from the pipeline pierced hole. The lower block groove is formed semi-circular in transverse cross section and the upper block groove is formed semi-elliptical in transverse cross section with the pipeline being deformed totally conforming to the block grooves when the blocks are brought into assembled abutment.

REFERENCES:
patent: 2875777 (1959-03-01), Lacart
patent: 3038490 (1962-06-01), Yocum
patent: 3162211 (1964-12-01), Barusch
patent: 3198206 (1965-08-01), O'Brien
patent: 3252474 (1966-05-01), Ehrens et al.
patent: 3252475 (1966-05-01), Jones
patent: 3336937 (1967-08-01), Ehrens et al.
patent: 3428075 (1969-02-01), Wagner

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