Fluid handling – Processes – Cleaning – repairing – or assembling
Patent
1986-11-19
1988-03-15
Walton, George L.
Fluid handling
Processes
Cleaning, repairing, or assembling
137318, 137319, 251216, 285197, B23B 4108, F16L 4104, F16K 4300
Patent
active
047306360
ABSTRACT:
Apparatus and method for tapping a tubular member includes a split ring type clamp arrangement having a tapping tee assembly extending therefrom. The clamp arrangement includes a combination alignment/hold structure to facilitate orientation of the clamp arrangement with the tubular member. A combination valve and cutting tool cooperates with the tapping tee assembly. An annular cutting surface on the tool has a first diameter for cutting an aperture in the tubular member. An annular, conical flange portion on the exterior of the tool spreads the aperture to a diameter greater than the first diameter, while a sealing land on the cutting tool has a second diameter larger than the first diameter and is adapted for close receipt in the aperture. A radial shoulder engages an internal surface of the tubular member for securely clamping and sealing the tapping tee assembly thereto. A second portion of the combination valve and cutting tool is removed from a first portion to thereby open a continuous flow passage from the tubular member to the tapping tee assembly. In another preferred embodiment, the first and second portions are retained together and adapted for relative movement.
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Hart Ralph L.
Reschke Albert H.
Volgstadt Frank R.
Perfection Corporation
Walton George L.
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