Hot tap connection and method for production thereof

Details Hot tap connection and method for production thereof Hot tap connection and method for production thereof

1996-12-31

1998-12-01

Walton, George L.

Fluid handling

Processes

Cleaning, repairing, or assembling

156 86, 156295, 1563031, 156305, 137318, 264 32, 264 36, 264262, 285 213, 285197, F16K 4300, B29C 2700

Patent

active

058424962

ABSTRACT:
A hot tap connection comprising: (i) a main supply pipe, (ii) a side branch pipe connected to the main supply pipe, (iii) a reinforcing saddle surrounding the main supply pipe and the side branch pipe, (iv) a first gap between the main supply pipe and the reinforcing saddle, (v) a second gap between the side branch pipe and the reinforcing saddle, and (vi) a solid material substantially filling the first gap and the second gap. The method for producing the hot tap connection is also described. The method comprises the steps of: (i) connecting a side branch pipe to a desired location on a main supply pipe; (ii) surrounding the side branch pipe and the main supply pipe with a reinforcing saddle; (iii) defining a first gap between the main supply pipe and the reinforcing saddle, and a second gap between the side branch pipe and the reinforcing saddle; (iv) injecting a pumpable material into the first gap and the second gap; (v) curing the pumpable material to produce a solid material; (vi) cutting a coupon of the main supply pipe within the side branch pipe to produce an opening in the main supply pipe to allow gas to flow therethrough; (vii) removing the coupon from the side branch pipe. The hot tap connection is advantageous as, in most installations, it can be used as a permanent connection between a main supply pipe and a side branch pipe.

REFERENCES:
patent: 3686375 (1972-08-01), Hall
patent: 3799182 (1974-03-01), Long
patent: 3847694 (1974-11-01), Stewing
patent: 3905718 (1975-09-01), Luckenbill et al.
patent: 4223925 (1980-09-01), Reneau et al.
patent: 4606558 (1986-08-01), Davidson
patent: 4832069 (1989-05-01), Gale et al.
patent: 4978255 (1990-12-01), Gale et al.
Along the Line, vol. 9 No. 1, Jan./Feb. 1996.

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