Opening of Quotes- Century Center Water Softener System - DA Dodd

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SECTION 15120 VALVES PART 1: GENERAL 1.1 SCOPE A. Furnish all valves indicated, specified or required for satisfactory operation and complete control of systems and equipment. Furnish shut-off valves in all branch connections to mains and at inlets and outlets of all equipment. 1.2 REQUIREMENTS A. Valves shall have the manufacturer's name or trademark and working pressure cast into the body of the valve. Unless otherwise noted, valves shall have minimum rating of 125 pound WSP. Valves shall not be smaller than line size except where specifically noted or approved. B. Except as noted, valves shall be as manufactured by Apollo, Conbraco, Watts, Victaulic or Nibco. Valves shall be of one (1) manufacturer for each type of valve. C. Valves shall be compatible with piping and fluid characteristics for system on which they are installed. D. On copper piping systems, equivalent sweat solder and valves from the same manufacturer may be used on 2" and smaller piping, provided that seats, discs, stems, wedges, etc., are removed during soldering of valve. E. Valve packing and trim shall be asbestos free. 1.3 USAGE A. Vent, shut-off or stop valves shall be ball or butterfly type. Ball valves may be used on 2" or smaller line sizes. Butterfly valves may be used on 2-1/2" and larger line sizes. PART 2: PRODUCTS 2.1 BUTTERFLY VALVES A. Butterfly valves 2-1/2" through 36" for “lead-free” domestic water shall be fully lugged. The body shall have an extended neck for insulation. The disc shall be made of aluminum bronze or stainless steel. The seat shall be EPT or EPDM, having a temperature range of -20 deg. F to +275 deg. F. The seat shall employ a rigid back-up ring and have a shutoff rating of 200 psi. Upper and lower reinforced bearings shall be used to prevent shaft seizure. Valves 4" and larger shall have a wheel operator with gear or worm connection. 15120 - 1