Abstract: A coupling assembly having first and second sleeves configured to be tightened to a fluid conduit, a radial-split gasket configured to be positioned between the sleeves and the fluid conduit and having an outer gasket layer and a separate inner gasket layer configured to be selectively disengaged from each other, an inner circumferential surface of the outer gasket layer and/or an outer circumferential surface of the inner gasket layer comprising a plurality of circumferentially spaced retaining protrusions interfacing between the inner and outer gasket layers, each of the retaining protrusions having a separation portion and an engagement portion connected to the other gasket layer by a gasket layer connection such that the engagement portion will separate at the separation portion under an applied separation force prior to the engagement portion separating at the gasket layer connection.

Abstract: A coupling assembly having first and second sleeves configured to be tightened to a fluid conduit, a radial-split gasket configured to be positioned between the sleeves and the fluid conduit and having an outer gasket layer and a separate inner gasket layer configured to be selectively disengaged from each other, the outer gasket layer having a radial gap defined by first and second radial side wall gap surfaces, the inner gasket layer having a radial gap and a radial insert configured to be received in the radial gap of the outer gasket layer between the first and second radial side wall gap surfaces.

Abstract: A clamp comprising a spanner extending across a gap between first and second longitudinally extending edges of a band clamped onto a fluid conduit having a circumference orientated about an axis; a connecting assembly configured to tighten the spanner and band to the conduit and a gasket between the band and spanner and the conduit; the gasket comprising a first circumferential seal bead protruding from an inner side of the gasket and having a circumferential length that is equal to or greater than the circumference of the conduit and at least one standalone header bead protruding from the inner side of the gasket and disposed at least partially between the spanner and the conduit and having a circumferential length that is substantially less than the circumference of the conduit.

Abstract: A clamp comprising a band, the band comprising first and second edges, first and second lug elements connected proximate to the first and second band edges, multiple bolts extending transversely between the first and second lug elements, the first lug element comprising a transversely extending lug finger having a finger bearing surface, the second lug element comprising a lug finger land having a bearing surface, the lug finger extending transversely between the first and second lug elements, the finger bearing surfaces of the lug finger and the lug finger land contoured relative to each other such that tightening the band to reduce a gap between the edges of the band in a first range causes the first lug element to rotate in a first direction of rotation and in a second range causes the first lug element to rotate in a second direction opposite to the first direction of rotation.

Abstract: A push plug type line stop branch assembly for use with a tapping sleeve fitting on a pipe. The branch assembly has a bore defined therein for receive a plug. The inner walls of the branch assembly defining the bore are shaped in part to provide a shoulder for receiving a lip on the plug.

Abstract: A clamp comprising a spanner extending across a gap between first and second longitudinally extending edges of a band clamped onto a fluid conduit having a circumference orientated about an axis; a connecting assembly configured to tighten the spanner and band to the conduit and a gasket between the band and spanner and the conduit; the gasket comprising a first circumferential seal bead protruding from an inner side of the gasket and having a circumferential length that is equal to or greater than the circumference of the conduit and at least one standalone header bead protruding from the inner side of the gasket and disposed at least partially between the spanner and the conduit and having a circumferential length that is substantially less than the circumference of the conduit.

Abstract: An improved tapping sleeve assembly (114) comprising a sleeve (115) configured to clamp a main fluid conduit (116) oriented about a longitudinal axis (x-x), the sleeve having a first member (134), a second member (140) separate from the first member, and a connection assembly (121) between the first member and the second member, the first member having a branch aperture (123) configured to communicate with a branch fluid conduit (129), the connection assembly configured and arranged to tighten the first and the second members to the main fluid conduit, a gasket (132) disposed between the first member and the main fluid conduit, the gasket comprising a flexible sheet (133) and a thickened aperture seal (122) configured to extend around the branch aperture between the sleeve and the main fluid conduit, the gasket comprising an inwardly protruding circumferential seal bead (137a) extending substantially transverse to the longitudinal axis and intersecting an inwardly protruding portion of the aperture seal, the

Abstract: A clamp comprising a band, the band comprising first and second edges, first and second lug elements connected proximate to the first and second band edges, multiple bolts extending transversely between the first and second lug elements, the first lug element comprising a transversely extending lug finger having a finger bearing surface, the second lug element comprising a lug finger land having a bearing surface, the lug finger extending transversely between the first and second lug elements, the finger bearing surfaces of the lug finger and the lug finger land contoured relative to each other such that tightening the band to reduce a gap between the edges of the band in a first range causes the first lug element to rotate in a first direction of rotation and in a second range causes the first lug element to rotate in a second direction opposite to the first direction of rotation.

Abstract: A repair clamp bolt retaining assembly having a band with first and second edges and a gap there between, first and second lug elements extending from the band on opposite sides of the gap, multiple bolts configured to extend transversely from bolt receiving openings in the first lug element to bolt receiving openings in the second lug element, and a bolt retainer on at least one of the multiple bolts on the inner side of the opening in the second lug element and configured such that the bolt retainer does not pass through the openings in the second lug element.

Abstract: A tapping sleeve assembly comprising a sleeve configured to clamp a main conduit, a gasket between the sleeve and main conduit, the gasket having a protruding aperture seal offset a distance from a branch aperture in the sleeve, the aperture seal having a first inwardly protruding portion extending substantially parallel to the longitudinal axis of the main conduit, an inwardly protruding circumferential seal bead extending substantially transverse to the longitudinal axis from the first portion of the aperture seal, the seal bead having a main length portion having a thickness less than the thickness of the first portion of the aperture seal, the seal bead having a junction end portion between the main length portion and the first portion of the aperture seal, the junction end portion having a non-uniform thickness, the aperture seal having a non-uniform thickness, and the offset distance being non-uniform.

Abstract: A tapping sleeve assembly comprising a sleeve having first and second shells, a gasket, a connection assembly comprising first and second side bar elements connected to the first and second shells, respectively, multiple lugs extending from the first and second side bar elements, and a bolt extending between each of the respective lugs, the first side bar element comprising an upper leg connected to the first shell at an upper connection, a lower leg supporting at least one of the lugs, an intermediate bearing unit configured to bear against the first shell, and the bearing unit having at least one bearing surface not affixed to the outer surface of the first shell, whereby the first and second side bar elements may be drawn towards each other to tighten the sleeve to a conduit.