Separate Body and Tapping Gland (outlet) - By separating the outlet gland from the sleeve body the sleeve reinforces the pipe prior to removal of the critical prestress wire from the outlet area.
Broad Cross Section Gasket - The 7/8” wide gasket with a hydromechanical lip provides a broad sealing surface which produces an initial seal that increases with increases in line pressure. The broad, flat gasket is very advantageous for sealing on beveled cylinder welds.
Gusseted Pressure Plate - The gusseted pressure plate eliminates problems caused by flexing of the cylinder or tapping sleeve pressure plate. This grooved plate is contoured to fit the cylinder and retains the broad profile gasket to provide an extra margin of safety at this critical point.
Combination Gland/Draw Flange - The combination gland/draw flange on 4” - 12” outlet sizes facilitates tapping with a 25” travel tapping machine. Larger outlets utilize separate flanges for each function to make bolt take-up on large flanges more accessible.
Load Bearing Set Screws - The 415 Tapping Sleeve is furnished with load bearing set screws on the gland flange that are tightened after the gland is installed. These set screws tighten against the sleeve draw flange, transferring any load on the outlet away from the steel cylinder and onto the sleeve.
Grout Seal Assembly -Type I 415 Tapping Sleeve, the standard sleeve, is furnished with straps and a grout seal assembly under the sleeve. These two design features facilitate fitting oversize, undersize and out-ofround pipe by providing the means to pour cement grout into a cavity to make a perfect sleeve fit. This feature is in accordance with AWWA M-9 Manual as recommended by the manufacturers of concrete pressure pipe. Epoxy coated sleeves and sleeves with a solid back sit directly on the pipe, precluding the use of the grout seal assembly.
Epoxy Coated Waterway - The tapping sleeve’s waterway is fusion applied epoxy coated to provide a quality connection protected against corrosion in the critical waterway