Valve assembly and method for hot tapping a line

Details Valve assembly and method for hot tapping a line Valve assembly and method for hot tapping a line

2006-04-04

2006-04-04

Lee, Kevin (Department: 3753)

Fluid handling

Processes

Cleaning, repairing, or assembling

C137S015170, C137S315110, C137S315220, C137S320000, C137S323000, C251S305000

Reexamination Certificate

active

07021325

ABSTRACT:
A valve assembly includes a valve body with an access opening in which a linearly installed but pivotally operated gate-like valve-stopping mechanism is disposed, said mechanism including a support structure or cartridge with a pivotally moveable valve-stopping element or isolator (e.g., a butterfly element). A method for hot tapping a pipeline with a valve assembly as described above proceeds by (i) connecting the valve body to a line to be tapped, (iii) connecting a hot-tapping machine to the valve body, (iv) connecting a bonnet holding the valve-stopping mechanism to the valve body over the access opening, (v) hot tapping the line, (vi) advancing the valve-stopping mechanism into the valve body interior, and (vii) disconnecting the hot-tapping machine from the valve body with the valve-stopping element pivoted to the first position where it stops fluid communications. The gate-like valve-stopping mechanism can replace a gate in an insert valve (IV) or a repair-under-pressure (RUP) valve.

REFERENCES:
patent: 2936778 (1960-05-01), Stillwagon
patent: 4460012 (1984-07-01), Koumi et al.
patent: 4562860 (1986-01-01), Walter et al.
patent: 5896885 (1999-04-01), Svetlik
patent: 6497245 (2002-12-01), Torii

Affiliated with

Also associated with

Rating

Valve assembly and method for hot tapping a line does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Valve assembly and method for hot tapping a line, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Valve assembly and method for hot tapping a line will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3583602