Abstract A flange clamp assembly encircling pipe flanges for sealing all leakage at the flange joint and a gun for forcing sealant compound into the clamp. The clamp is in the form of a split ring adapted to encircle and be clamped against mating pipe flange fittings to cover the joint therebetween. The clamp is provided with a cavity in the form of a shallow annular groove in the inside of the clamp fitting over the joint and connected to an inlet sealant fitting for forcing sealant therethrough. The inlet fitting is bifurcated in the form of a Tee-fitting with a threaded inlet receiving a sealant gun. A bolt valve is adapted to pass through another opening of the Tee-fitting and open and close the sealant inlet. The sealant gun has an injector housing with an advancing screw adapted to be gripped by a wrench to force sealant through a threaded nozzel into the fitting. As a modification, the flange clamp may comprise three axially aligned rings to accommodate flanges of slightly different sizes with the middle ring being provided with the sealant cavity.
A flange clamp assembly for sealing the circumferential joint between a pair of mated pipe flanges, said clamp comprising a collar fitting around said flanges and having a shallow annular groove in registry with said joint, means for filling said groove with a fluid sealant under pressure comprising a fitting for a sealant gun, said fitting having a bifurcated passageway providing first and second passages opening to the atmosphere and a main passageway communicating with said annular groove, the first of said passages receiving the sealant gun and the second passage receiving a reciprocal valve member operable to open and close the main passage and said first passage, the second passage being axially aligned with the main passage and threaded to receive the reciprocal valve member, said valve member being threadedly receivable in said main passage to close the first passage and being reciprocable to open said first passage, said clamp being comprised of three axially aligned rings to accommodate mating flanges of different diameters, said rings comprising a first main ring provided with said annular groove engageable to bridge the joint between the flanges and second and third side rings engageable in clamping relation on the flanges on the opposite sides of the main ring.
Claim 2
Dependent Claim
206 words
A flange clamp assembly for sealing the circumferential joint between a pair of mated pipe flanges, said clamp comprising a collar fitting around said flanges and having a shallow annular groove in registry with said joint, means for filling said groove with a fluid sealant under pressure comprising a fitting for a sealant gun, said fitting having a bifurcated passageway providing first and second passages opening to the atmosphere and a main passageway communicating with said annular groove, the first of said passages receiving the sealant gun and the second passage receiving a reciprocal valve member operable to open and close the main passage and said first passage, the second passage being axially aligned with the main passage and threaded to receive the reciprocal valve member, said valve member being threadedly receivable in said main passage to close the first passage and being reciprocable to open said first passage, said clamp being comprised of three axially aligned rings to accommodate mating flanges of different diameters, said rings comprising a first main ring provided with said annular groove engageable to bridge the joint between the flanges and second and third side rings engageable in clamping relation on the flanges on the opposite sides of the main ring.
Claim 3
Dependent Claim
56 words
The flange clamp of claim 1 in which the side walls of the main ring and the side rings are spaced from one another at their inside diameter and are closed together at their outside diameter to provide a circumferential passage bounding the flange for the reception of sealant extended under pressure from the annular groove.
Claim 4
Dependent Claim
35 words
The flange clamp of claim 1 in which the second and third side rings are provided at their inner face with circumferential grooves for the reception of a packing material to provide a secondary seal.