A. Valves and specialties including necessary accessories indicated on drawings and specified in this section.

SECTION 15081 - VALVES AND SPECIALTIES (HVAC) PART - 1 - GENERAL 1.01 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section. 1.02 Division 0 and Division 1 apply. 1.03 SECTIONS INCLUDES A. Valves and specialties including necessary accessories indicated on drawings and specified in this section. B. RELATED WORK DESCRIBED IN OTHER SECTIONS 1. Mechanical General Provisions: Section 15010. 2. Tests: Section 15042 3. Piping: Section 15050 4. Pumping Equipment: Section 15140 1.04 Applicable Publications: A. Following publications of issues listed below, but referred to thereafter by basic designation only, form a part of this specification. B. The American Society of Mechanical Engineers (ASME) Publications: ASME Boiler and Pressure Vessel Code - Current. 1.05 SUBMITTALS A. All Valves: Catalog cuts, schedule of proposed installation locations, pressure ratings, and materials of construction. B. Specialties: Catalog cuts. C. Strainers: Catalog cuts, pressure drop curves. D. Thermometers and Pressure Gauges: Catalog cuts, proposed range, calibrated accuracy. E. Pressure relief and reducing valves: Catalog cuts and settings. F. Expansion Tank and Air Separator: Shop drawings, catalog cuts of all accessories, installation details for multiple tanks. G. Water flow sensors and balancing valves: Catalog cuts, pressure drop charts, engineering VALVES AND SPECIALTIES (HVAC) 15081-1

information. H. Air vents: Catalog cuts. I. Flexible connectors: Catalog cuts J. Supports: Catalog cuts and/or drawings. K. Anchors: Drawings and details of installation. L. Balancing valves: Catalog cuts, pressure drop charts,engineering information. M. Water flow meters : Catalog cuts, pressure drop charts, engineering information. N. Flow Rectifiers: Catalog cut, installation methods and procedures. PART - 2 - PRODUCTS 2.01 VALVES A. Gate Valves: To 2 in. 150 lb, w.s.p., bronze, solid wedge disc, inside screw, rising stem, union bonnet, screwed ends; Crane Fig. No. 431UB or equivalent. 2-1/2 in. and above 125 lb. w.s.p., iron body, bronze mounted,above renewable seats, solid wedge disc, outside screw and yoke, bolted bonnet, flanged ends. Crane Fig, No. 465.5, NIBCO F617-O or equivalent. B. Globe and Angle Valves: To 2 inches 150 lb, w.s.p., bronze, renewable disc and seat, stainless steel plug disc and seat ring, union bonnet, screwed ends. Crane Fig. No. 14.5P, NIBCO T256- AP or equivalent. 2-1/2 in. and above 125 lb. w.s.p., renewable disc and seat,above iron body, bronze mounted beveled bronze disc and seat ring, O.S. & Y, flanged ends. Crane, Fig. No. 351, NIBCO F718-B or equivalent. C. Ball Valves: 2" and smaller, Valves shall be rated 150 psi SWP and 600 psi WOG, regular/full port, VALVES AND SPECIALTIES (HVAC) 15081-2

bronze body, ASTM B-584, B-62 or B-61. No forged brass containing more than 15% Zinc. Stainless steel ball and stem, screwed ends, steel handle. NIBCO No. T585-70-66 or equal. Note: where piping is insulated, valves shall be equipped with 2 extended handles of non-thermal conductive material. Provide protection sleeve that allows operation of the valve without breaking the vapor seal or disturbing the insulation. Provide adjustable memory stops. D. Butterfly Valves: 4 in. and above Butterfly valves shall be rated 200 PSI (4 TO 12 ) and 150 psi (14 TO 36 ) bi-directional differential pressure. Valve shall provide bubble tight shutoff at rated pressures. Valve bodies shall be ductile iron lug design with extended neck to accommodate pipe insulation. Disc material shall be aluminum bronze alloy or 316 stainless steel. Shaft shall be 316 stainless steel material and of one piece design with positive disc to shaft connection. Shaft bushings shall be bronze. Seat shall be EPDM or BUNA-N rubber, replaceable and non-collapsing. Provide lock type ten position lever operators on valves up through 66 in. Valves 8 in. and larger shall be furnished with a totally enclosed handwheel gear operator, or chainwheel gear operator where specified. Pneumatic or electric operated valves shall have operators of weatherproof design suitable for the full operating design pressure of the valve. Pneumatic operators shall operate on 80 psig instrument air. For chilled water applications, provide a 316 S.S. disc, 416 S.S. shaft and EDPM seats. E. Combination Balancing and shutoff Valves: All s 175 psi w.o.g., non-lubricated eccentric type, nickel seat, semi-steel body, neoprene resilient plug, Buna filled Teflon U-ring seal or Buna (Vee) packing, with memory stop and lever handle. Valves 2 in. and smaller screwed ends; 1-1/2 in. and larger flanged ends. DeZurik Series 100 or equivalent. F. Check Valves: To 2" 125 lb., w.s.p., bronze body regrind Teflon disc, screwed ends. Crane Fig. No. 141. NIBCO Fig. No. T413-B or equivalent. 2-1/2" and above Spring loaded, silent, non-slam type. 125 lb. w.s.p., globe type, Class "B" iron body, bronze seat and single disc, stainless steel spring, guided disc top VALVES AND SPECIALTIES (HVAC) 15081-3

and bottom, flanged ends. NIBCO F910-B or equivalent. G. Circuit Balancing Valves: 1. Globe style for precise regulation and control, rated 175 psi for iron valves and 240 psi for bronze, at 250 deg. F. 2. Valves 2 and smaller shall be constructed of dezincification resistant brass (DZR) or bronze alloy, NIBCO T or S 1710, or equivalent. 3. Valves 2-1/2 to 12 shall be constructed of iron with ANSI Class 125/150 flanged or grooved ends, NIBCO F or G 737, or equivalent. 4. Valves shall have two metering/test ports with internal check valves and protective caps. All valves shall have visual position readout and concealed memory stops for repeatable regulation and control. NIBCO, Tour &Anderson, Armstrong, or equivalent. H. All valves located outdoors shall be provided with weatherproof operators and stainless steel shafts. I. Butterfly valves shall be as manufactured by Crane, Jamesbury, Keystone, Stockham, Armstrong, Milwaukee or equivalent. J. All other valves shall be as manufactured by Stockham, Crane, DeZurik, Homestead, Mueller, Nibco, Jenkins, Lunkenheimer, Clow, Keystone, ITT Grinnel or equivalent. 2.02 SPECIALTIES A. Air Vents: Provide approved air vents at high points in chilled water systems; vents, automatic type unless otherwise indicated. Automatic vents shall be 3/4 inch or larger float type as manufactured by Armstrong 1-AV or equivalent. Manual and automatic air vents shall be provided as indicated on the drawings. B. Dielectric pipe fittings: Dielectric pipe fittings shall consist of insulators, insulating gasket, pipe connector and nut of flange as required. Pipe connectors shall be suitable for soldered, screwed, or welded joints as required. Dielectric unions shall be rated at 250 psi and cast iron flange unions at 175 psi. Dielectric fitting shall be plated in accordance with Federal Standard 5/10 of onethousandths of an inch. Fittings shall be as manufactured by Epco. C. All small branch piping including gage cocks shall be made with 3000 psi Weld-O-Lets using extra heavy pipe nipples. Weld-O-Lets shall be one size larger than the pipe run-out. D. Flow Test Stations: Flow test stations shall consist of a brass needle valve, an extended length wet tap pitot insert probe, low pressure and high pressure gauge, and cocks mounted on a single assembly. Mannion Mechanical Services, Inc., Model BTC-FT2, TACO Sentinel or equivalent. E. Strainers: 3/4 inch to 2 inches "Y" type iron body, 250 lb, w.s.p. with blow-off outlet and plug, VALVES AND SPECIALTIES (HVAC) 15081-4

screwed ends. Muessco #11, or equivalent. Screens for water service shall be 20 mesh monel. 2-1/2 inches and above "Y" type, screen, iron flanged body, 125 lb. w.s.p. with blow-off tapping and plug, Muessco #751 or accepted equivalent. Screens for water service shall be 1/16 inch perforated brass for 2-1/2 inch size thru 4 inch size and 1/8 inch perforated brass for sizes above 4 inches. F. Flexible Connectors: All Full line size with floating flanges. Rated 150 psi at 180 degrees F. Wire reinforced, double arched. With control rods and rubber washers. Mason Industries; or equivalent. G. Pressure Relief Valves: 3/4 inch Brass body, micro finished bevel seats, cadmium plated springs, manual lift ring, ASME Std. Bell & Gossett or equivalent. H. Pressure Reducing Valves: 3/4 inch for water Brass body and brass working parts with built-in strainer, 125 w.s.p. Bell & Gossett or equivalent. I. Pressure/Temperature Test Ports 1. Ports shall be suitable to accept a 1/8 diameter thermometer stem or pressure gauge adapter and shall have dual EDPM internal seals. Ports shall have a threaded cap with internal seal. Ports for insulated pipe or equipment shall be ¼ MPT (or ½ MPT) by 2-3/4 long. Ports for uninsulated pipe or equipment shall be ¼ MPT (or ½ MPT) by 1-3/8 long. 2. Construction shall be brass body with dual EPDM seals and brass cap with a retainer strap. 3. Minimum rating shall be 1,000 psi at 270 deg.f. 4. Readout Meter Kit: Provide a portable readout meter kit by the manufacturer of the P/T ports. The kit shall include two thermometers, a pressure gauge and adapters. The kit shall include silicone lubricant and all components supplied in a molded plastic case. 5. Manufacturer: a. Flow Design Inc., Superseal b. Pete s Plug c. Sisco J. Industrial, mercury filled, glass thermometers shall have a 9-inch scale "V" shape and adjustable angle separable socket well. Select thermometer range so that operating temperature falls at midpoint of range. Accuracy shall be plus or minus 0.5 degrees F. Casings shall be brass or aluminum as VALVES AND SPECIALTIES (HVAC) 15081-5

manufactured by H.O. Trerice, or equivalent. 1. Thermometers shall be provided at locations indicated on the drawings and at every location where a temperature sensor is installed. K. Thermometer wells shall be of brass construction with cap and chain as manufactured by Marshall Town, or equivalent. Provide extended neck wells in insulated piping. Provide tees at lines 3 inches or smaller for thermometer wells. L. Pressure gauges shall be of standard depth, cast aluminum, black finished, chrome plated close type ring, clear glass window, bronze bourdon tube, precision movement and plus or minus 0.5 percent accuracy. Gauge shall have a minimum 4-1/2 inches diameter face with range selected such that operating pressure shall be as near middle of scale as possible. As manufactured by H.O. Trerice, or equivalent. M. Gauge valves shall be brass, needle valve type, as manufactured by H.O. Trerice, Model No. 735Z, or equivalent. Provide pressure snubbers at all gauge cocks manufactured by H.O. Trerice, Model 872, or equivalent. N. Provide at each flow measuring location a nipple and ball valve combination. This assembly is to be used for the purpose of allowing manual measurements with the use of a pitot tube. Proper size, for actual location and pipe size, shall be as per manufacturer's recommendations. O. In-line type air purger with tappings for an air vent and a make-up water line as indicated, shall be Amtrol, l25 psi, flanged, cast iron. P. Provide and install immersion wells and pressure taps as required for automatic control system. Q. Diaphragm-Type Compression Tanks: and number as indicated; construct of welded carbon steel for 125 psig working pressure. Separate air charge from system water to maintain design expansion capacity, by means of a flexible diaphragm securely sealed into tank. Provide taps for pressure gage and air charging fitting, and drain fitting. Support vertical tanks with steel legs or base. Tank, with taps and supports, shall be constructed, tested, and labeled in accordance with ASME Pressure Vessel Code, Section VIII, Division 1. Manufacturer shall be Amtrol, Inc., Taco, Bell and Gossett or equivalent. R. Air separator: Welded black steel. ASME constructed and labeled for minimum 125 psig water working pressure; perforated stainless steel air collector tube designed to direct released air into compression tank; tangential inlet and outlet connections; screwed connections up to and including 2" NPS; flanged connections for 1-1/2" NPS and above; threaded blowdown connection; sized as indicated for full system flow capacity. Manufacturer shall be Amtrol, Inc., TACO, Bell and Gossett ITT, or equivalent. S. Triple Duty Valve: Valve body shall be cast iron for 150 psig flanges or ductile iron for 250 psig flanges. Valve shall incorporate the following three functions in one body: tight shutoff, springclosure type silent non-slam check and throttling with flow measurement capability. The valve body shall have (2) ¼ NPT connections on each side of the valve seat. The two connections shall have brass pressure and temperature metering ports, with Nordel check valves and gasketed caps. Two other connections shall be supplied with brass drain plugs. Metering ports and drain ports shall be interchangeable. The valve disc shall be bronze plug and disc type with a high impact resin seat. VALVES AND SPECIALTIES (HVAC) 15081-6

The valve shall be stainless steel with flat surfaces provided for adjustment using open-end wrenches. For grooved piping installations the valve body shall be ductile iron with grooved ends and anti-rotation lugs on the inlet and outlet of the body. T. Pump Suction Diffuser: Where indicated on the plans each pump shall be provided with a suction diffuser on the inlet side of the pump. Diffuser body shall be cast iron for 150 psig flanges or ductile iron for 250 psig flanges. The diffuser shall be provided with outlet flow stabilizing vanes, a removable strainer and a fine mesh start-up strainer. The permanent strainer shall have a free area of at least 250% of the pipe sectional area. A threaded drain outlet with a brass plug shall be provided. A boss shall be cast on the bottom of the diffuser body to allow a supporting pipe stool to be located under the diffuser to remove the weight of the diffuser from the pump flange. PART - 3 - EXECUTION 3.01 PROVIDE VALVES where shown on plans. Additionally, provide shut-off valves at inlets and outlets of equipment and all branch connections to mains. 3.02 All valves located underground shall be in a valve box, with an access cover. 3.03 Actuators exposed to weather shall be weatherproof with lifetime factory lubrication. Cast iron casing shall be painted with weather resistant enamel. a. Shafts shall be 316 stainless steel. This includes handwheel shaft and output connection shaft to valve. b. A pointer shall be provided to indicate valve position. c. Gaskets and O-ring seals shall be provided at casing openings and mating surfaces. 3.05 FINAL CONNECTIONS to apparatus, equipment, automatic control valves, and pressure reducing valves shall be made with flanges or unions between shut-off valve and connection. 3.06 CONNECTIONS TO COOLING COILS and refrigeration machines shall be as described in preceding paragraph with flanges or unions adjacent to equipment to allow tube removal without extensive dismantling of piping. 3.07 STRAINERS: Shall be full line size and shall be full size valved for servicing. Strainers shall be installed upstream of automatic control valves and other locations as shown on plans. 3.08 PRESSURE RELIEF VALVES: Shall be provided at cooling coil side of shut-off valves and where shown on drawings. 3.09 FLEXIBLE CONNECTORS: Shall be provided where shown on plans. 3.10 LOCATION OF VALVES AND CHAIN OPERATORS: Install valves so as to be accessible for operation and free from interferences when operated. Position so that leakage will not contact any electrical equipment that may be located below. Provide valve chain operators for all valves 4 inches and larger for which the valve handle is more than 6 feet above the operating equipment room floor level. VALVES AND SPECIALTIES (HVAC) 15081-7

3.11 THERMOMETER WELLS: Provide for all thermometers and at the inlet and outlet of each cooling coil, and where shown on drawings. Also adjacent to sensing bulbs of controllers and remote temperature indicators. 3.12 THERMOMETERS: Provide at the inlet and outlet of each air handling unit coil bank, inlet and outlet of each chiller connections, and where shown on drawings. 3.13 PRESSURE GAUGES: Provide where indicated on drawings and at following locations: A. At suction and discharge of circulating pumps. B. At inlet and outlet of chiller evaporator and condenser. C. At make-up water inlet to expansion tanks and equipment. 3.14 PIPE HANGERS AND SUPPORTS A. Piping shall be adequately supported to prevent vibrations and swaying, so connections to equipment are not stressed. B. Supports of wire, rope, wood, chain, strap, perforated bar, or any other makeshift device are not permitted. C. Where overhead construction does not permit fastening hanger rods in required locations, provide additional steel framing as required. D. Refer to "Vibration Isolation", Section 15200, and structural drawings for supports requiring vibration isolators. E. Where services are grouped, provide trapeze type hangers of structural steel. Refer to structural drawings. F. Provide adjustable hangers, inserts, brackets, rollers, clamps, supplementary steel, as required and/or shown for proper support of pipe lines. Hangers shall be installed to allow for expansion and contraction for pipe lines and be of adequate size to permit insulation to run continuously through, independently, so no weight will be supported by equipment. Coordinate location of hangers and supports under this Section and with structural drawings. Painting under Section 09900 except as noted in Section 15010. G. Hanger and Support Spacing: Steel Pipe Maximum Support Spacing, Feet To 3/4 in. 5.0 1 in. to 2-1/2 in. 8.0 3 in. to 8 in. 12.0 H. Threaded rods for supporting pipe shall allow 2 inches of vertical adjustment and shall have two nuts on each end to allow positioning and locking. Single rod hangers shall be as follows: VALVES AND SPECIALTIES (HVAC) 15081-8

Pipe Rod To 2 in. 3/8 in. 2-1/2 in. to 3 in. 1/2 in. 4 in. to 5 in. 5/8 in. I. Floor supports, wall brackets as shown on drawings or as required to support equipment. Submit shop drawings. J. Buckling of piping due to inadequate provision for expansion shall be the Contractor's responsibility. Piping shall be properly guided between expansion joints and anchor joints. 3.15 DIELECTRIC FITTINGS A. Provide dielectric fittings betweens piping of dissimilar metals. 3.16 Install inline air separators in pump suction lines. Run piping to compression tank with 1/4 inch per foot (2 percent) upward slope towards tank. Install drain valve on units 2 inch and larger. 3.17 Install diaphragm-type compression tanks on floor as indicated. Vent and purge air from hydronic system, charge tank with proper air charge to suit system design requirements. 3.18 COMMISSIONING A. Fill system and perform initial chemical treatment. B. Check expansion tanks to determine that they are not air bound and that the system is completely full of water. C. Before operating the system perform these steps: 1. Open valves to full open position. Close coil bypass valves. 2. Remove and clean strainers. 3. Check pump for proper direction of correct improper wiring. 4. Set automatic fill valves for required system pressure. 5. Check air vents at high points of systems and determine if all are installed and operating freely (automatic type) or to bleed air completely (manual type). 6. Set temperature controls so all coils are calling for full flow. 7. Check operation of automatic bypass valves. 8. Check and set operating temperatures of chillers, and cooling towers to design requirements. 9. Lubricate motors and bearings. 3.16 Location of Valves and Chain Operators: Install valves so as to be accessible for operation and free from interferences when operated. Position so that leakage will not contact any electrical equipment that may be located below. All valves located above 7 feet in the mechanical room shall be provided with chain operators. END OF SECTION 15081 VALVES AND SPECIALTIES (HVAC) 15081-9