15120 Water Distribution System

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    SECTION 15120 - WATER DISTRIBUTION SYSTEM

    PART 1 - GENERAL

    0.1 DESCRIPTION

    A. This Section covers all interior domestic cold water, domestic hot water, domestic hot waterreturn, laboratory cold water, laboratory hot water, laboratory hot water return, nonpotable coldwater, and tempered water piping systems to a point 5 ft outside building wall.

    0.2 RELATED WORK

    A. Section 15015 - Excavation and Backfill.

    B. Section 15020 - Mechanical Supporting Devices.

    C. Section 15030 - Mechanical Systems Insulation.

    D. Section 15160 - Plumbing Material Specialties.

    0.3 REFERENCE

    A. The Work under this section is subject to requirements of the Contract Documents includingthe General Conditions, Supplementary Conditions, and sections under Division 1 GeneralRequirements.

    0.4 QUALITY ASSURANCE

    A. Order pipe with each length marked with manufacturer's name or trademark and type of pipe;with each shipping unit marked with the purchase order number, metal or alloy designation,temper, size, and supplier's name.

    B. Installed material not meeting specification requirements must be replaced with material that

    meets these specifications without additional cost to Owner.

    0.5 DELIVERY, STORAGE, AND HANDLING

    A. Promptly inspect shipments to ensure material is undamaged and complies with specifications.

    B. Cover pipe to prevent corrosion or deterioration while allowing sufficient ventilation to avoidcondensation. Do not store materials directly on grade. Protect pipe, tube, and fitting endsfrom damage. End caps shall remain in place. Protect fittings, flanges, and unions by storageinside or by durable, waterproof, above ground packaging.

    C. Offsite storage agreements will not relieve Contractor from using proper storage techniques.

    D. Storage and protection methods must allow inspection to verify products.

    E. Before shipping, piping shall be cleaned, free of rust and scale, and chemically treated toprotect inside of pipe from rusting, and furnished with end caps.

    0.6 SUBMITTALS

    A. Manufacturer's technical data for the following:

    1. Pipe

    2. Fittings

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    3. Joints

    4. Valves

    5. Unions

    6. Dielectric fittings

    7. Water hammer arrestors

    8. Expansion joints

    B. Shop drawings on items specified herein.

    PART 2 - PRODUCTS

    0.7 MATERIALS

    A. Materials herein specified shall be new unless otherwise noted.

    0.8 PIPE, FITTINGS, AND JOINTS

    A. Above Ground:

    1. Copper (2-1/2 and Smaller):

    a. Pipe: Copper tube, Type K, hard drawn, ASTM B88.

    b. Fittings:

    1) Cast bronze, solder joint, pressure rated, ANSI B16.18.

    2) Wrought copper, solder joint, pressure rated, ANSI B16.22.

    c. Joints: Lead free (

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    1. Acceptable manufacturers: Apollo/Conbraco, Crane, Hammond, Milwaukee, Nibco,Stockham, Velan, and Watts with indicated features and equal to model listed. Note thatnot all manufacturers make all sizes.

    a. Full Port, 2 Piece: Bronze body, ASTM B584, stainless steel ball, teflon seats, stemextension, 600 psi WOG pressure rating, Apollo Series 77-240

    b. Full Port, 3 Piece: Bronze body, ASTM B584, stainless steel ball, teflon seats, stem

    extension, 600 psi WOG pressure rating, Apollo Series 82-240c. Extended Insulated Handle: For insulated systems to prevent condensation on the

    valve body with thermal and vapor seal, equal to Nibco Nib Seal, extended handle.

    d. Lockable Handle: For emergency fixture water supply systems, with lock keyed tofacility standards.

    e. Actuated Valves: Apollo series 77-AR8-64 full port ball valve with stainless steel balland stem, actuator ready with ISO mounting pad, series AE80010 actuator, 115 VAC,two SPDT switches, high limit and thermal overload protection, hardened steel gears,NEMA 4 enclosure, valve position indicator, series 78153801 stainless steel mountingkit. Alternate manufactures may be Nibco or Valvcon V-series, or Emerson Hytork,with actuator to match valve based on a 100 PSI supply condition of 50 degree Fclean fluid, 85 degree F ambient temperature, and infrequent operation of less thanonce per year. Actuator breakaway torque shall be at least 20% greater than stall

    torque. Breakaway torque shall accommodate twice the highest required operationaltorque for the valve to accommodate infrequent operation, and minimum duty cycle of25%. Actuator closer time shall be a minimum of 5 seconds to a maximum of 25seconds cycle time from full open to full closed.

    2. Butterfly Valves:

    a. Acceptable Manufacturers: Dezurik, Pratt, or Mueller.

    b. Lug Type, Size 3-inch and Larger: AWWA C504 type, ductile iron body, stainlesssteel disc, EPDM liner, 316 stainless steel stem, NBR seat, Class 150, lever handlethrough 6", gear operator 8" and larger.

    c. Actuated Valves: As above, but furnished for actuator mounting, factory packagedwith actuator. Actuator shall be 115 VAC, two SPDT switches, high limit and thermaloverload protection, hardened steel gears, NEMA 4 enclosure, valve position indicator,

    and required mounting kit. Alternate manufactures may be Valvcon or EmersonHytork. Sizing shall be based on a 100 PSI supply condition of 50 degree F cleanfluid, 85 degree F ambient temperature, and infrequent operation of less than once peryear. Actuator breakaway torque shall be at least 20% greater than stall torque.Breakaway torque shall accommodate twice the highest required operational torque forthe valve to accommodate infrequent operation, and minimum duty cycle of 25%.

    Actuator closer time shall be a minimum of 5 seconds to a maximum of 30 secondscycle time from full open to full closed.

    3. Gate Valves:

    a. Acceptable Manufacturers: American Flow Control, Clow, Kennedy, Mueller, M&H, orWatts.

    b. Size 3-inch and Larger: Commercial duty, OS&Y or NRS pattern, AWWA C-509,ASTM A-126 Grade B iron body, bronze and stainless steel trim, bronze or stainless

    steel stem, bolted bonnet, flanged ends, bi-directional flow, resilient solid wedgebronze disc, gland packed, 150 PSI working pressure at 140-degrees F. Bubble tightclosure, no seat rings. Anti-friction thrust bearing. Double o-ring stuffing box, with twoo-rings located above thrust collar and third o-ring below collar to permit service in-lineunder pressure. ASTM A-307 bolts and nuts. Valve shall be bottom wedging type withtwo part floating wedge contact per wedge. No side wedging. Rubber to iron bond ondiscs inspected per AASTM D429. Provide with FDA approved epoxy coated interioror equivalent heat-fused epoxy. Epoxy coating shall be applied over a properlyprepared and cleaned surface. Cast iron wheel handle. NSF-61 compliant. Kennedy

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    series Ken-Seal II or approved equal American Flow Control, Clow, Mueller, M&H, orWatts. Valves on combined water service lines shall be UL and FM listed, and shallbe provided with tamper switch as specified in Section 15280

    C. Check Valves:

    1. Size 3" and Smaller:

    a. Bronze body, ASTM B62, Y pattern, Buna-N resilient disc, horizontal swing, 200 psiWOG rating, Nibco 413.

    2. Valves 4" and Larger:

    a. Iron body, horizontal swing, cast bronze disc and seat, 200 psi WOG rating, Nibco F-918.

    3. Valves 2" and Smaller:

    a. Bronze body, ASTM B62, in-line lift type with spring, Buna-N disc, 250 psi WOGrating, Nibco 480.

    4. Valves 2-1/2" and Larger:

    a. Iron body, bronze seat with Buna-N, bronze disc, in-line type with spring, 250 psi WOGrating, Nibco W960.

    5. Size 1/2" thru 2":

    a. Stainless steel body, in-line pattern, stainless steel seats, spring and valve disc.Durabla Basic Check, Model BSS, rated for 300 psi WSP.

    b. Manufacturers: Nibco, Watts, Mission, Durabla, Circle Seal, Milwaukee, Stockham.

    D. Balancing Valves:

    1. Acceptable Manufacturers: Nibco, Victaulic, or Tour and Anderson.

    2. Brass balancing valve with hand wheel with tamper-proof memory feature, Y-pattern withdifferential test ports. Components NSF listed for potable water. Tour & Handerson/TAHydronics series TBV-S or STAD/STAS, or equal Nibco or Victaulic Manufacturing.Pressure class selection appropriate for system working pressure.

    E. Solenoid Valves:

    1. General service 2-way solenoid valve with brass body, PTFE seals and NBR discs, NEMA-1 enclosure, and 120 volts. ASCO 8221 series slow closing, anti-water hammer, Exp.proof/watertight, size to match piping. Coordinate power connection with ElectricalContractor. Fail close or fail open as indicated on drawings.

    0.11 DIELECTRIC FITTINGS

    A. Insulating nipple, metal casing, inert thermoplastic lining, Clearflow dielectric fitting byPerfection Corporation.

    B. Dielectric unions 2" and smaller; dielectric flanges 2" and larger; with iron female pipe thread tocopper solder joint or brass female pipe thread end connections, non-asbestos gaskets,insulators and bolt kits, and pressure rating of not less than 175 psig at 180 degrees. WattsRegulator Company, Lochinvar, Wilkins or Epco Sales, Inc.

    0.12 WATER HAMMER ARRESTORS

    A. Mechanical Water Hammer Arrestors:

    1. Piston-compressed air column type, with sealed air chamber.

    2. Manufacturers: Watts, Sioux-Chief, and Precision Plumbing Products (PP