Specifications - City of Montpelier, Vermont

Title:Montpelier District HeatingCity of Montpelier, VT15055– Basic Piping Materials and MethodsIssue Date:September 28, 2012Page #:3 of 10C. Protect flanges, fittings, and specialties from moisture and dirt by inside storageand enclosure, or by packaging with durable, waterproof wrapping.PART 2– PRODUCTS2.1 PIPE AND FITTINGSA. Refer to the individual piping system specification sections in Division 15 forspecifications on piping and fittings relative to that particular system.B. All pipe and fittings shall be fabricated in the USA or Canada.C. Elbows for all pipe sizes over 2" diameter shall be long radius type (1.5 thediameter to centerline of pipe).D. Use reducers, increasers, or reducing tees for change of pipe size. Bushings arenot allowed.E. Forged steel branch connectors, per the limits set forth in Part 3 of this section,may be used to create branch connections in steel piping systems. All branchconnectors shall be 3,000# fittings.1. “WeldOLets”, “ThreadOLets”, or “SockOLets”.2. “TransOCon”2.2 JOINING MATERIALSA. Welding Materials: Comply with Section II, Part C, ASME Boiler and PressureVessel Code for welding materials appropriate for the wall thickness andchemical analysis of the pipe being welded.B. Brazing Materials: Comply with SFA5.8, Section II, “ASME Boiler andPressure Vessel Code” for brazing filler metal materials appropriate for thematerials being joined. Copper phosphorus alloy brazing filler metal; BcuP5(Staysilv), containing 15% silver (Ag), 5% phosphorus (P), remaining elementsare copper (Cu).C. Soldering Materials: Soft solder shall be 95 ½% tin, 4% copper and 1/2% silver.Silvabrite 100 or approved equal.BASIC PIPING MATERIALS AND METHODS150553