1 02/18 HEAT-TITE PIPING SYSTEMS SPECIFICATIONS HEAT-TITE shall be used where specified for condensate, low temperature hot water, chilled water, or dual temperature service, using a rubber ring joining method. Unless otherwise specified, all pipe, fittings, valves, and accessories shall conform to the requirements of ANSI B31.1 and shall be of the proper type for pressure and temperature of the heating or cooling water. STEEL CARRIER PIPE: Carrier pipe shall be black steel per ASTM A-53, Grade B, [welded] or [seamless] or ASTM A-106 [seamless], schedule [40] (standard weight for 12”Ø) or schedule [80] (extra heavy for 10”Ø and 12”Ø). The spigot ends shall be sand blasted and zinc coated for corrosion protection. HEAT-TITE COUPLING: The HEAT-TITE coupling shall be Ductile Iron. The Ductile Iron coupling shall be Grade 65-45-12 in accordance with ASTM A-536. The coupling shall have a deep bell push-on configuration with sealing rings meeting ASTM F-477. The length of the coupling shall be such that, when correctly assembled, it will give the proper end separation. Sealing rings shall be EPDM and supplied by the coupling manufacturer. The coupling shall be factory insulated using the same casing and insulation as the straight length of pipe. POLYURETHANE FOAM INSULATION: The insulation shall be Polyurethane Foam and shall meet the following specifications: Type: Two component urethane Compressive Strength: 40 psi parallel min at 5% comp Shrinkage: None at 70ºF Free Rise Density: 2.0 to 3.0 lbs./cubic foot Aged "K" (70ºF - 72 hrs) 0.16 BTU-in./hour-ºF-ft.2 Closed Cell Content: 90% Insulation Concentricity: Carrier Pipe shall be concentric to casing pipe. The allowable maximum deviation from centerline of carrier pipe shall be plus or minus 1/4 inch at the casing center point and plus or minus 1/16 inch at the end seals. CASING PIPE: The casing shall be [Polyvinyl Chloride (PVC)] pipe shall be of virgin PVC resin meeting the minimum classification requirements of ASTM D1784 or [High Density Polyethylene (HDPE)]. The thickness for PVC casing shall be as shown on page four. Consult manufacturer for HDPE dimensional data. RUBBER END SEALS: Rubber end seals for insulated HEAT-TITE shall be a high temperature (HT) heat resistant Ethylene Propylene Diene Monomer (EPDM) molded rubber compound. All surfaces shall be smooth and free