Tapping Sleeve shall be of the high strength type having a wide body, made of corrosion resistant 304
stainless steel, which conforms to and reinforces the pipe. The sleeve shall have a wide gasket of Nitrile
Butadiene Rubber (NBR, Buna-N) per ASTM D2000 with hydromechanical activated lip, captured in a
recessed groove around the outlet; 18-8 Type 304 stainless steel hardware and nuts. Stainless steel
tapping sleeve shall be furnished with a stainless steel test plug in the test outlet. Sleeve shall be fully
passivated to return the stainless steel to its highest corrosion resistance.
Stainless steel mechanical joint outlet* shall meet the ANSI 21.11/AWWA C-111 Standards for
Mechanical Joint Dimensions. Outlets 3” - 16” shall be of one unit “monocast” design without separate or
affixed components. Outlet shall be furnished with load bearing alignment set pins to prevent movement
of the tapping assembly before or during the tapping process.
For outlet sizes 14" and larger, the gasket groove must be consistently positioned about throat of tapping
waterway. Inside diameter of the gasket groove must be set back a minimum of 1" from the waterway to
allow dispersal of forces generated by gasket compression. Gasket grooves machined in a circle and
formed to an elliptical shape will not be an accepted equal.
Nominal pipe sizes 36" and larger shall be of the heavy duty type.