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OC Motor Pool and Maintenance Shop <br />PDC Project 23017 Facility Natural-Gas Piping 23 11 23 - 2 <br />1.Fittings: ASME B16.3,malleable iron,or ASTM A234/A234M,wrought steel welding type. <br />2.Joints: Threaded (2 inch and under only)or welded to ASME B31.1. <br />2.02 FLANGES,UNIONS,AND COUPLINGS <br />A.Unions for Pipe Sizes 2 Inches and Under: <br />1.Ferrous pipe: Class 150 malleable iron threaded unions. <br />B.Flanges for Pipe Size Over 2 Inch: <br />1.Ferrous Pipe: Class 150 forged steel slip-on flanges;preformed neoprene gaskets. <br />C.Dielectric Connections: Union with galvanized or plated steel threaded end,copper solder end, <br />water impervious isolation barrier. <br />2.03 PIPE HANGERS AND SUPPORTS <br />A.Provide hangers and supports that comply with MSS SP-58. <br />1.If type of hanger or support for a particular situation is not indicated,select appropriate type <br />using MSS SP-58 recommendations. <br />2.Pipe Hangers for Hot and Chilled Water 6"and smaller:Cooper B3100,Anvil Fig.260,or <br />equivalent. <br />3.Hangers for Hot Pipe 8"and larger:Adjustable steel yoke,cast iron roll,double hanger. <br />Cooper B3110,Anvil Fig.181,or equivalent. <br />4.Riser Clamps:Cooper B3373,Anvil Fig.40,or equivalent. <br />5.Beam Clamps:Cooper B3050,Anvil Fig.134,or equivalent. <br />6.Offset Clamps:Cooper B3148,Anvil Fig.103,or equivalent. <br />7.Ceiling Plate:Cooper B3199,Anvil Fig.610,or equivalent. <br />8.Wall Brackets:Cooper B3067,Anvil Fig.199,or equivalent. <br />9.Rod Ceiling Plate:Cooper,Anvil Fig.610,or equivalent. <br />10.Concrete Inserts:Cooper B2500,Anvil Fig.95 or equivalent. <br />11.Multiple or Trapeze Hangers: Steel channels with welded spacers and hanger rods. <br />12.Rooftop Supports for Low-Slope Roofs: Steel pedestals with bases that rest on top of roofing <br />membrane,not requiring any attachment to the roof structure and not penetrating the roofing <br />assembly,with support fixtures as specified;and as follows: <br />a.Bases: High density polypropylene. <br />b.Base Sizes: As required to distribute load sufficiently to prevent indentation of roofing <br />assembly. <br />c.Steel Components: Stainless steel,or carbon steel hot-dip galvanized after fabrication in <br />accordance with ASTM A123/A123M. <br />d.Attachment/Support Fixtures: As recommended by manufacturer,same type as <br />indicated for equivalent indoor hangers and supports;corrosion resistant material. <br />e.Height: Provide minimum clearance of 6 inches under pipe to top of roofing. <br />f.Manufacturers: <br />1)PHP Systems/Design <br />2)Caddy <br />3)Miro <br />2.04 BALL VALVES <br />A.Manufacturers: <br />1.Conbraco Industries,Inc <br />2.Grinnell Products,a Tyco Business <br />3.Milwaukee Valve Company <br />4.Nibco,Inc <br />5.Viega LLC <br />6.Apollo <br />B.Construction,4 Inches and Smaller: MSS SP-110,Class 150,400 psi CWP,bronze or ductile iron <br />body,304 stainless steel ball,regular port,Teflon seats and stuffing box ring,blow-out proof stem, <br />lever handle with balancing stops,threaded or grooved ends with union. <br />Docusign Envelope ID: EF9C08D2-5B75-438B-8D6D-8473F81BD7C4