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latest revision . PVC pressure pipe shall be made from Class <br /> 12454-A or Class 12454- 13 material and conform to the <br /> outside diameter of cast iron pipe with a minimum wall <br /> thickness of DR18 . <br /> C . Polyvinyl chloride pipe per Approved Manufacturer' s Product <br /> List, <br /> D . The pipe shall be blue in color. <br /> 2 .05 PIPE MATERIALS FOR SIZES 14" THROUGH 36" <br /> A. All pipe and fittings intended for conveying or transmitting potable <br /> water shall be designed for a minimum working pressure of 150 <br /> psi . <br /> B . Polyvinyl chloride pressure pipe shall conform to the latest <br /> AWWA Standard Specifications C905-97 and ASTM D1784 , <br /> or latest revisions . PVC pressure pipe shall be made from <br /> Class 12454-A or Class 12454-B material and conform to <br /> the outside diameter of cast iron pipe with a minimum wall <br /> thickness of DR18 . <br /> Co Polyvinyl chloride pipe per Approved Manufacturer' s Product <br /> List. <br /> D . The pipe shall be blue in color. <br /> 2 . 06 JOINTS <br /> A. Joints for PVC pressure pipe shall be bell and spigot push-on <br /> rubber gasket type only. No solvent weld or threaded joints will be <br /> permitted . <br /> B . The IRCDUS ' s Engineer may consider other type joints for <br /> specific installation upon submission of specifications and <br /> approval . <br /> C . Restraint joints , when required ; see Approved <br /> Manufacturer' s Product List . <br /> 2 .07 FITTINGS <br /> A. All fittings shall be ductile iron mechanical joint and shall conform <br /> to AWWA Standard Specifications C110/A21 . 10-98 or C153/A <br /> 21 . 53-00 , or latest revisions . Fittings shall be cement mortar <br /> lined and seal-coated in accordance with AWWA Standard <br /> Specifications C104/A21 . 4-95 , or latest revision . <br /> 2 - 2 <br />