Specifications include, but are not limited to: Unless otherwise specified, ductile iron pipe shall be class 52 and manufactured in the United States of America and shall conform to ANSI 21.51 (AWWA C-151) for "pipe centrifugally cast in metal molds for water". Cement linings shall be double the standard thickness and shall conform to ANSI A21.4. Seal coating shall be applied inside and out. All pipe shall be push-on type joint, in accordance with ANSI A21.11. In addition, all pipe purchased may be subject to inspection and acceptance by the Manchester Water Works or its agent. The supplier and/or manufacturer shall be responsible for such accommodations and handling as are required to allow for proper inspection, if so requested by the Manchester Water Works. Additional Requirements - The pipe and fittings, in addition to meeting all of the appropriate requirements of ANSI and AWWA, shall conform to the following: 1.) All pipe and fittings shall be free of all significant casting flaws both inside and out, including slag holes, slag inclusions, laps, lamination, mold splash, and pin holes. 2.) All linings shall be of uniform thickness with no significant waving and/or roughness. 3.) Bell ends shall be cleaned of cement and excess seal coat material. 4.) Spigot ends shall be properly tapered and cut ends shall be ground. Fittings - Unless otherwise specified, all mechanical joint fittings shall conform to AWWA C104/ANSI A21.4, C111/A21.11 or C153/A21.53. All fittings shall be pressure rated for 350 psi, ductile iron with double cement-lining thickness and seal coated inside and out, or two-part epoxy coated, and shall be manufactured in the United States of America. Fittings 4"-12" shall be compact pattern per AWWA C153. In addition, all fittings purchased may be subject to inspection and acceptance by the Manchester Water Works or its agent. The supplier and/or manufacturer shall be responsible for such accommodations and handling as are required to allow for proper inspection if so requested by the Manchester Water Works...
