VALVES SECTION 15100

Transcription

1 VALVES SECTION PART 1 GENERAL 1.1 DESCRIPTION A. The requirements of this SECTION apply to all Work of this DIVISION where applicable. The valves, materials, and methods herein are generally common to the various mechanical systems described in other SECTIONS of this DIVISION. Automatic valves, control valves, backflow preventers and other specialty valves are specified on the drawings or in other SECTIONS of this DIVISION. B. Provide valves as specified herein for: 1. Domestic Hot and Cold Water 1.2 RELATED WORK SPECIFIED ELSEWHERE A. SECTION 15010, "GENERAL REQUIREMENTS" B. SECTION 15355, "FUEL GAS PIPING" C. SECTION 15450, PLUMBING SYSTEMS D. SECTION 15900, "BUILDING MANAGEMENT SYSTEM" E. Where valves specified in other SECTIONS of DIVISION 15 conflict with requirements of this SECTION, the former shall take precedence. 1.3 QUALITY ASSURANCE A. Valves and Accessories 1. Supply all valves and all accessories new, free from defects. 2. All items of a given type shall be the product of the same manufacturer. B. Product Delivery and Storage: Store valves in a protected area. Keep valves in closed position to protect valve seats.

2 C. Reference Standards: (Refer to individual Mechanical SECTIONS for additional standards) 1. American Society for Testing and Materials (ASTM) Publications: a. A Malleable-Iron Castings b. A 126 Grey Iron Castings for Valves, Flanges and pipe fittings. c. A 216 Grade WCB Cast Carbon Steel d. A 217 Grade CA15 Cast 11-1/2-13 Chromium Stainless Steel e. B 61 Cast Steam Bronze Castings f. B 62 Composition Bronze or Ounce Metal Castings g. B 584 Copper Alloy Bronze Castings 2. American Water Works Association (AWWA) Publications: PART 2 PRODUCTS 2.1 DOMESTIC HOT AND COLD WATER A. Shut-off or sectional valves 2 inch and smaller shall be: 1. Ball Valves, 600 psi CWP, with cast brass bodies, replaceable reinforced teflon seats, conventional port, blowout proof stems, chrome plated brass ball, and threaded or solder ends with extended cups. a. Threaded: Stockham S-216-BR-RT Crane 9302 Nibco T-580-BR-R-70 b. Soldered: Stockham S-216-BR-RS Crane 9322 Nibco S-580-BR-R Gate Valves, Class 125, body and bonnet of ASTM B-62 cast bronze composition, with threaded or soldered ends, solid disc, copper silicon rising stem, brass packing gland, Teflon-impregnated packing and malleable handwheel. a. Threaded: Stockham B-100 (RS) Crane 428 Nibco T-111

3 b. Soldered: Stockham B-108 (RS) Crane 1334 Nibco S-111 B. Globe valves and angle valves 2 inch and smaller shall be Class 125, body and union bonnet of ASTM B-62 cast bronze composition, threaded or solder ends, copper silicon alloy stem, replaceable Teflon disc, brass packing gland, Teflon impregnated packing. Globe Valves Angle Valves 1. Threaded: Stockham B-13T B-216 Crane TF Nibco T-211-Y T-311-Y 2. Soldered: Stockham B-14T --- Crane 1700S --- Nibco S-211-Y --- C. Check Valves 2 inch and smaller shall be Class 125, threaded ends, body and cap shall be of ASTM B-62 bronze composition, swing type. 1. Threaded: Stockham B-319 Crane 1707 Hammond IB Soldered: Stockham B-309 Crane 1707S Hammond IB SAFETY AND RELIEF VALVES A. Valve size shall be designated by the nominal size of the inlet connection. Size, capacity, pressure relief setting, accumulation, and blowdown, as shown on the drawings and schedules. B. Domestic Water: 1. Cold Water: All bronze cast body with threaded connections, cadmium plated steel spring. Kunkle 20, Chas. M. Bailey No. 25, or equal. 2. Hot Water: All bronze cast body with threaded connections. Combination pressure temperature relief valve in accordance with ANSI Z21.22.

4 a. Watts No. 10L for heaters to A.G.A. Temperature/Steam Rating of 80,000 BTUH b. Watts Series 40 for heaters to A.G.A Temperature/Steam Rating of 500,000 BTUH c. Watts Series 240 for heaters to A.G.A Temperature/Steam Rating of 730,000 BTUH d. Watts Series 340 for heaters to A.G.A Temperature/Steam Rating of 1,150,000 BTUH 2.3 PRESSURE REDUCING AND TEMPERATURE REGULATING VALVES A. See Schedules, details and diagrams on the Drawings. PART 3 EXECUTION 3.1 INSTALLATION A. Installation of Valves: 1. Valve sizes and types shall be as shown on the drawings. For 2-1/2-inch pipe size, connections may be flanged, or screwed. 2. Before installing valves, blow out with compressed air and clean with water or steam. 3. Install valves only in accessible locations. Manually operated valves shall be positioned so that stems are in any suitable angle from horizontal to upright position. 4. Install lift check valves in horizontal position. Swing check valves may be installed in vertical lines with upward flow. 5. All exposed valves requiring frequent operation and located more than 8-feet above the floor shall be fitted with chains and chain operators extending to within 6-feet 0-inches of the floor. 6. All hand-controlled line valves 2 inch and smaller shall be ball or gate valves, except that where frequent operation is required ball valves shall be used. 7. Angle valves may be used for making a 90 degree turn in a line in lieu of a globe valve and elbow.

5 8. Where hand throttling is required provide globe or angle valves, unless otherwise shown. 9. Install all globe and angle valves to close against the pressure. 10. Flanges, Gaskets, Flange Bolts, nuts and washers shall be suitable for the intended service and shall be in accordance with ANSI/ASME B Building Service Piping. END OF SECTION