Specifications - City of Montpelier, Vermont

Title:Montpelier District Heating02665 – Water SystemsCity of Montpelier, VTIssue Date:September 28, 2012Page #:2 of 73. PVC pipe shall not be exposed to prolonged periods of sunlight, as pipediscoloration and reduction in pipe impact strength will occur. Canvas or otheropaque material shall be used to cover PVC pipe stored on site.B. Joints1. All joints shall be the pushon joint type with type with elastomeric gaskets forwatertight service.2. All joints shall meet the requirements of ASTM D3139.C. Fittings1. All fittings four inch and larger pipe shall be ductile iron mechanical joints and shallconform to AWWA C110 and ANSI A21.10, 350 pounds working pressure, and beof a compact body design. Retainer glands shall be rated for 350 psi and shall beGrip Ring or approved equal.D. Resilient Seat Gate Valve1. Valves shall be manufactured to meet all requirements of AWWA SpecificationsC509, Valves twelve inches (12”) and smaller shall be bubble tight, zero leakage at250psi working pressure, 350 psi minimum test pressure. Valves shall have nonrising stems, stainless steel body bolts and nuts, open counterclockwise and beprovided with a two inch (2”) square operating nut. All buried valves shall besupplied with a valve box. Gate valves shall be American Flow Control 2500 orapproved equal. All gate valves shall be supplied with a gate box aligner installedunder the operating nut to minimize dirt from entering the valve box optimize valvebox alignment.2. Valve Boxes shall be of the cast iron slide type with five and onequarter inch ( 5 ¼”)shaft and six foot (6’) trench depth. Valve boxes shall have a cast iron cover marked“WATER”. Boxes shall enclose fittings and dirt tight with the top of the cover flushwith the top of the box rim with a minimum overlap of 6” in the extended position (tograde).E. Fire Hydrants1. Fire hydrant shall be Waterous Pacer model WB67250 and conform to AWWAC502 with the following specifications:Main Valve Opening: 5 ¼ inchesNozzle Arrangement: Two 2½ inch hose nozzlesOne 41/2” National Standard thread with chained caps.Operating nut shall be pentagon, 11/4 inch, open left (counterclockwise).Hydrants shall be shop painted red in accordance with AWWA specifications.Install a castinplace thrust block behind hydrant elbow.F. Tapping Sleeves and ValvesTapping sleeves shall be of the size shown on the Drawings. Sleeves shall have aminimum working pressure of 250psi. Tapping Sleeves shall be American Flow Controlseries 2800 Mechanical Joint or approved equal. Tapping valves shall meet therequirements for resilient wedge gate valves as applicable.WATER SYSTEMS 02665 2