Cement Lined Ductile Iron Pipe, Flanged

Furnish and Deliver Cement Lined Ductile Iron Pipe, Flanged to the Suffolk County Water Authority. Pipe All ductile iron, cement-lined pipe shall be Class 53, centrifugal cast pressure pipe for water. Ductile iron pipe barrels shall conform to the requirements of ANSI/AWWA C151/A21.51. The pipe shall be ductile iron pipe centrifugal cast in metal molds and sand-lined molds, conforming to the latest addition of ANSI/AWWA C151/A21.51. The interior of the pipe shall be cement mortar lined in accordance with the latest addition of ANSI/AWWA C104/A21.4 double thickness and then seal coated on the exposed surface of the lining with a bituminous coating. All pipe used must be listed as ANSI/NSF 61 approved in regard to coatings and cement linings. Threads on the pipe barrel shall be tapered pipe threads (NPT) in accordance with ANSI B1.20.1 adapted to the ductile iron pipe outside diameter. Flanges All flanges shall be ductile iron and conform to the chemical and physical properties specified for ductile-iron fittings in accordance with ANSI/AWWA C110-A21.10. The overall length (flange to flange) for 4” pipe shall be 17’-6” with 1/8” tolerance (±). The overall length for 6” thru 16” shall be 19’-6” with 1/8” tolerance (±). Bolts hole shall straddle top common centerline or shall have two hole alignment

Division 33 -

Utilities, Water Utility Distribution Piping.