Specifications include, but are not limited to: The metal to be used in the manufacture of the tapping sleeves is to be ductile iron in, accordance with AWWA C110-72 or latest revision.; Tapping sleeves are to be coated with bituminous coating that will meet AWWA Specifications.; All mechanical joint accessories shall be ductile iron and in accordance with ASA Specifications (A21.11 and shall be assembled on sleeve prior to shipment.; All tapping sleeves shall be of the mechanical joint type. The mechanical joint ends shall be sealed by neoprene gaskets, compressed tightly around mains by means of a second flange or gland bolted to the end flanges of the sleeve. Gasket and its seat inside the flange of the sleeve shall be tapered or wedge shaped. The gasket shall be totally confined to prevent cold-flow when gland is tightened.
