B. Work Included: The work shall include, but not be limited to, the following: 1. Types of valves specified in this section include the following:

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1 SECTION PART 1 - GENERAL 1.1 SUMMARY A. Provide labor, materials, equipment and services, and perform operations required for complete installation of Valves and related work as indicated on the drawings and specified herein. B. Work Included: The work shall include, but not be limited to, the following: 1. Types of valves specified in this section include the following: a. Gate Valves. b. Check Valves. c. Globe Valves. d. Float Valves. e. Pressure Reducing Valves. f. Double Regulating Valves. g. Strainer. h. Temperature and pressure relief valves. i. j. l. Ball Valves. Plug Valves. k. Expansion Joints. Flexible Connections. 2. Valves furnished as part of factory-fabricated equipment, are specified as part of equipment assembly in other Division 15 sections. C. Related Work Specified Elsewhere 1. Basic Mechanical Requirements - Section SUBMITTALS Submit the following in accordance with requirements specified under Submittals in Section Product data: Submit copies of manufacturer's latest published literature for materials and equipment specified herein for approval; obtain approval before ordering materials. 1.3 DELIVERY, STORAGE AND HANDLING Exercise proper care in the handling of work so as not to injure the finished surfaces, and take proper precautions to protect the work from damage after it is in place. PART 2 - PRODUCTS 2.1 GENERAL A. Provide valves of same type by one manufacturer. B. Provide valves with manufacturer s name (or trademark) and pressure rating clearly marked on valve body.

2 C. Valves up to 2 (50mm) diameter, threaded ends, to meet the followings: 1. Body, bronze ASTM B62 2. Non rising stem solid wedge disc, screwed in Bonnet, hand wheel operated. 3. Threaded ends to ANSI BI Testing to be accordance with BS Series B. 5. Pressure rating PNI6. D. Valves from 2 Y (65mm) diameter and up, flanged ends, raised face, in accordance with: 1. Body, cast iron ASTM A Valves specified as non rising stem, inside screw, bronze facing disc, bronze trim, hand wheel operated. 3. Flanges to BS Testing to BS Pressure rating PNIO for non rising stem. 6. Pressure rating PNI6 for 0.5 & Y, rising stem. E. All valves (gate, globe, check, strainer), threaded or flanged to have the same connection size with the pipe (except where mentioned). F. Taper thread, spherical seat union to be installed with all threaded valves. G. All valves shall be capable for repacked under pressure. H. A union shall be used with all gate, globe, regulating, check and float valves. 2.2 GATE A. Gate valves shall be designed for the indicated working pressure whether valves are opened or closed. B. Bronze gate valve on wall equipment to be heavy duty type, heavy weight and meet ASTM B62, non rising stem, PN16. C. Cast iron gate valve for all equipment shall be heavy duty type and in accordance with ASTM A126, O.S & Y, rising stem, PN16 & PN 10 for irrigation stem. D. Valves with rising stems shall be with outside screw and yoke, O.S & Y and shall be provided for all equipment isolating valve 2 / diameter and above located in mechanical areas and rooms such as boiler, pumps, water tanks.etc. 2.3 CHECK Check valves shall be used on the discharge side of pumps and whenever shown on the drawings or requested by the Engineer. Material & pressure to be as Check valves shall be swing type. 2.4 GLOBE A. Globe valves shall be installed where shown on drawings for water flow control. For proper throttling, globe valve, cast iron body flanged, PN16, to have a 45 Mitre type disc. B. Material and pressure to be as FLOAT A. Float valves shall be of all bronze construction including levers and arms, with bronze float and suitable for a cold water working pressure of 10 bars. Float valves shall have screwed inlets. B. Float valves shall be of the full bore, equilibrium ball type, designed to close tight against maximum pressure when half submerged. They shall have renewable synthetic rubber valve discs and balancing piston buckets. 2.6 PRESSURE REDUCING (PRV)

3 Pressure reducing valves to be of the self-contained, direct acting, spring loaded, diaphragm type, with stainless steel filter mesh (0.016mm) around the seat. Replacement of any part must be done without removing the valve body from the pipe. 1. Pressure reducing valves size from 2 to be in accordance with: a. Brass body, threaded connections, steel adjustment spring not in contact with water NBR diaphragm and seals, stainless steel or synthetic valve material, set pressure to appear on a set point scale, set pressure to maintain constant even when fluctuation on the inlet side occurs. b. Inlet pressure up to 25 bars. c. Outlet pressure from 1.5 to 6 bars. Pressure gage shall be connected to the valve. 2. Pressure reducing valves size from 2 1/2 and larger in accordance with: a. Cast iron body, flanged, synthetic coating inside and outside (toxically safe) steel adjustment spring not in contact with water, brass seat, EPDM diaphragm set pressure to maintain constant even fluctuation on the inlet side occurs. Set pressure to appear on a scale. b. b. Inlet pressure depend on application 16 or 25 bars. Outlet pressure from 1.5 to 6 bars. c. Pressure gage shall be connected to the valve. 3. Pressure reducing valves shall be as manufactured by BRAUKMANN, WATTS or approved equal. 2.7 DOUBLE REGULATING Double regulating valve shall be of the Y-pattern bronze globe valves, it shall have a characterized throttling disk with sufficient authority to regulate flow in a circuit incorporating a Flow Measurement Valve. The valves shall have a unique device which enables the disk to be locked in position to control flow at a pre determined rate. An Allen key (3mm) shall be supplied for lock adjustment. Tight closure of the valve shall be assured by use of a PTFE disc insert. The valves shall be rendered tamper proof. 1. Pressure regulating valve, size up to 2 (50mm) diameter to be in accordance with: a. Bronze body, screwed equal percentage fixed orifice or variable orifice. Accuracy of flow measurement L5%, with digital high strength melon, hand wheel with a gear operated gear mechanism. Two different scales: one for complete rotation (4rotations), one for indicating the division of each turn in tenths from zero to nine. b. Operating pressure 20 bars. 2. Pressure regulating valve, size 2 1/2 and larger to be in accordance with: a. Cast iron body, flanged, variable orifice. Accuracy of flow measurement +5%, with micrometer style hand wheel with a gear operated gear mechanism. Two different scales: 3. one for complete rotation (4rotations) 4. one for indicating the division of each turn in tenths from zero to nine. b. Operating pressure 16 bars. 2.8 SHUT OFF & BUTTERFLY VALVE Shall be Victaulic Series 705-W or 705 as UL listed and FM approved for 300psi (2065 kpa) service supplied with a ductile iron body conforming to ASTM A-536 coated with a polyphenylene sulfide blend, a disc of ductile iron conforming to ASTM A-536 with EPDM coating providing bubble tight shut off. Sizes 2½-6" ( mm) shall have an approved weatherproof manual actuator suitable for indoor or outdoor use with two single pole, double throw supervisory switches either pre-wired (WRD) or unwired (UWD) monitoring the open position.

4 2.9 CHECK & NON RETURN VALVE Shall be Victaulic series 717 and 717R Vic-Check single disc, spring loaded, check valves 2½ - 12" ( mm) as UL listed and FM approved for a single check and anti-water hammer service for horizontal or vertical installation, supplied drilled, tapped and plugged downstream for drainage outlet with Grade E EPDM seal, housing cast of ductile iron conforming to ASTM A- 536 Grade with grooved ends for installation with Victaulic grooved end couplings rated for service up to 250 PSI (1725 kpa) working pressure BALL Shall be Series 727 FireBall Valves, sizes 2-3" (50-80 mm), as UL listed for Specification 1091 and FM approved for 1112, supplied with a ductile iron body to ASTM A-536 and a ball to Type 316 stainless steel. Series 727 will be either un-supervised or will have factory installed double pole, double throw switches monitoring the open position. The series 727 is supplied with grooved ends to connect with Victaulic grooved end couplings and rated service up to 300psi (2065 kpa) working pressure. Valves shall be installed in accordance with the latest published Victaulic specifications ALARM CHECK VALVE Shall be Victaulic FireLock Series /2 6 ( mm) spring assisted, UL listed and FM approved for vertical installation supplied with Grade E EPDM clapper seal, housing cast of Ductile Iron to ASTM A-536 Grade , serviceable without removal from the line. Valve to be connected with Victaulic couplings as applicable rated for service up to 300 psi (2065 kpa) working pressure DRY PIPE Shall be Victaulic Fire Lock Series ½ - 6 ( mm), low differential, latched closed, spring assisted, self resetting clapper, UL listed and FM approved for vertical installation supplied with Grade E EPDM seal, housing cast of Ductile iron conforming to ASTM A-536 Grade serviceable without removal from the line. Valve to be connected with Victaulic couplings as applicable rated for service up to 300 psi (2065 kpa) working pressure ACTUATED CHECK VALVE WITH DELUGE TRIm Shall be Victaulic Fire Lock Series /2 6 ( mm) low differential, latched closed spring assisted, self resetting clapper, pneumatic, hydraulic or electric release, UL listed and FM approved for vertical installation supplied with Grade E EPDM clapper seal, housing cast of ductile iron to ASTM A-536 Grade serviceable without removal from the line to be connected with Victaulic couplings as applicable rated for service up to 300 psi (2065 kpa) working pressure ACTUATED CHECK VALVE WITH PRE-ACTION TRIM Shall be Victaulic Fire Lock Series /2 6 ( mm) low differential, latched closed spring assisted, self resetting clapper, pneumatic, hydraulic or electric release, non single, or double interlock, UL listed and FM approved for vertical installation supplied with Grade E EPDM clapper seal, housing cast of ductile iron to ASTM A-536 Grade serviceable without removal from the line to be connected with Victaulic couplings as applicable rated for service up to 300 psi (2065 kpa) working pressure 2.15 FLANGES AND GASKETS

5 A. Flanges shall be class 125 flat faced forged carbon, steel, weld neck to ANSI B16.1. B. Gaskets shall be non asbestos to ANSI B16.21 and dimension to suit ANSI B16.5 class 125, flat faced compressed sheeting 1.6mm thick. C. Stud bolts shall be to ASTM A193 grade B7, threaded full length complete with 2 nuts ASTM A194 grade 2 H STRAINERS A. Water strainer shall be supplied and installed at the suction connection of all pumps, and ahead of all automatic flow control valves. B. Strainers must have a large screening area assuring free flow of liquid with minimal pressure loss. Stainless steel or copper perforated screen. C. Bronze strainer, screwed up to 2 in accordance with: 1. Screen perforation hole diameter 0.8mm body to have hexagonal end connection on both side. 2. Y type, screwed in cap. 3. Pressure rating 25 bars. D. Cast iron strainer, flanged, 2 % and larger in accordance with: 1. Screen perforated hole diameter 0.75 mm. 2. Y type, bolted cap. 3. Cap drilled & tapped. 4. Pressure rating 16 bars FLEXIBLE PUMP CONNECTORS A. Shall have excellent ability to isolate sound and vibration, used to protect mechanical equipment by relieving piping stresses caused by piping misalignment. Rubber material to be Neoprene for cover and tube. Flexible connection have to withstand an internal pressure of 10 bars and 660 mm vacuum, size up to 2 to have galvanized double union ends threaded, twin rubber sphere. B. Size larger than 2 with floating flanges single sphere. C. For fire pumps, use adequate pressure class PLUG A. Plug valves, 50mm(2") and smaller. Rated at labor WOG; bronze body, with straightway pattern, square head, and threaded ends. B. Plug valves, 65mm(2 ½") and larger: MSS SP-78; rated at 12 bar WOG; lubricated plug type, with semi steel body, single gland, wrench operated and flanged ends WALL MOUNTED WATER TAPS Wall taps installed outside the building and on balconies shall be jet cock with isolating valve, non-return valve, double service and finishing facade plate SECTION AND SPECIALTIES A. Combined Pressure/Temperature Relief Valves: diaphragm operated, cast-iron or, brass body valve, with low inlet pressure check valve, inlet strainer removable without system shut-down, and non-corrosive valve seat and stem. Select valve size, capacity, and operating pressure to suit system. Valve shall be factory-set at operating pressure and have the capability for field adjustment. Valve shall be suitable for a pressure up to 150 psi (1030 Kpa) with temperature relief set 100 C. Valve shall be AGA and ASME rated similar to Watts regulator CO or approved equal.

6 B. Safety relief valve designed, manufactured, tested, and labeled in accordance with the requirements of Section IV of the ASME Boiler and Pressure Vessel Code. Valve body shall be cast-iron, with all wetted internal working parts made of brass and rubber, 860 kpa working pressure and 121 C maximum operating temperature. Select valve to suit actual system pressure and kcal capacity. Provide with fast fill feature for filling hydronic system SELF BALANCING VALVE A. The self balancing valve is a differential bypass valve which shall modulate. Open or close according to the set differential pressure between chilled water supply and return pipes. The differential bypass valve shall be complete with pressure controller. Two way modulating valve and all related accessories and controls. Pressure controller shall be suitable for converting subranges of positive pressure. Negative pressure and pressure differential into electrical output signals and to control operation of modulating valve accordingly. B. Pressure controller shall be suitable for liquids with differential pressure up to 10 bars. Output signals shall be from Zero to 20 ma (0 to 10 V). C. The sensor section and the terminal connection box shall be made of die cast aluminum from one unit. The evaluation electronics shall be housed in module casing of makrolon FLEXIBLE EXPANSION JOINTS A. Stainless steel expansion joints, to have stainless steel 321 corrugated metal sheets with welded steel tube ends. An internal stainless steel 304 sleeve to protect bellows. Steel tube ends or threaded for sizes up to 2"(50mm), and flanged with ties for seizes larger than 2"(50mm). B. Calculation must be presented to the Engineer showing the number of joints used in relation between the total length expanded and the axial movement of the joint. C. Pressure rating 10 bars or 25 bars depending on application AUTOMATIC AIR VENT A. Automatic air vents shall be installed as shown on the drawings, at all high points in the system and where indicated by the Engineer. B. Automatic air vents of the free floating mechanism type. They shall support a working pressure up to 150psi, body and cap 250psi. C. Mechanism of automatic air vent shall be interchangeable. D. Each automatic air vent shall be completed as specified herein after: 1. Cast iron body, ASTM Stainless steel seat and valve, heat treated. 3. Interchangeable free floating mechanism. 4. Stainless steel float, heli arc welded. 5. Vent test cock. 6. Isolating valve, 25Opsi. E. E. Automatic air vents shall be as Manufactured by ARMSTRONG, WATTS or any approved equal BOXES A. Supply and install, wherever shown on the drawings and as specified herein, all valve boxes. B. Size and number of valves in each valve box shall be as shown on drawings. C. Concrete valve box shall be of masonry wall construction or metaic wall construction encased within masonry. PVC valve boxes shall be similar to Rain Bird Model B or approved equal with Irrigation Control Valve Contaminated Water Do Not Drink engraved on the

7 cover in both Arabic and English. Valve box shall be of size suitable to house solenoid valve, strainer, gate valve and union. Valve box shall be HDPE, UV resistant plastic. D. Each valve box shall conform with the following requirements: 1. Depth shall conform with site conditions and pipe inverts. 2. Valve boxes located outside shall provide a minimum cover of 3Ocms over pipes passing through. 3. Indoor valve boxes shall have a steel cover matching space internal finish. 4. Outdoor valves boxes shall be provided with a heavy duty cast iron cover, lockable QUICK COUPLING CONNECTION Quick coupling connections shall be Rain Bird Model 3RC, 20mm diameter or approved equal AUTOMATIC FILTER KIT Automatic filter Kit(AFK-1) shall be Rainbird Model AF 100-LSS with (32mm) 1 1/4" Y filter MNPT and SC200 stainless steel mesh or approved equal, power: 220V, 50HZ with required transformer BACKFLOW PREVENTOR A. Provide backflow preventers as indicated, of the reduced pressure principle type, consisting of assembly including shutoff valves on inlet and outlet, and strainer on inlet. B. Backflow preventers to include test cocks and pressure- differential relief valve located between two positive seating check valves. C. Construct backflow preventers in accordance with ASSE Standard I 013. D. Subject to compliance with requirements, provide backflow preventers of one of the following manufacturers, or approved equal: Rainbird, Watts Regulator Co TEMPERATURE AND PRESSURE RELIEF VALVE A. This valve shall be used on domestic hot water lines wherever applicable. B. Temperature and pressure relief valve shall be self-closing type with test lever and screwed connections. C. Valve shall be suitable for a pressure of 75 to 150 psi (520 to 1030 Kpa) service and shall be supplied with temperature relief set at 210 F (100 C). D. Valve shall be AGA and ASME rated and similar to watts Regulator Co. or approved equal SECTION AND SPECIALTIES A. Combined Pressure/Temperature Relief Valves: diaphragm operated, cast-iron or brass body valve, with low inlet pressure check valve, inlet strainer removable without system shut-down, and non-corrosive valve seat and stem. Select valve size, capacity, and operating pressure to suit system. Valve shall be factory-set at operating pressure and have the capability for field adjustment. B. Safety relief valve designed, manufactured, tested, and labeled in accordance with the requirements of Section IV of the ASME Boiler and Pressure Vessel Code. Valve body shall be cast-iron, with all wetted internal working parts made of brass and rubber 1.5 MPa working pressure and 121 C maximum operating temperature. Select valve to suit actual system pressure and kcal capacity. Provide with fast fill feature for filling hydronic system ORIFICE FLOW MEASURING PLATES A. Orifice flow measuring plated shall be supplied and installed in the pipelines in the positions where required and advised by the Engineer for flow measurement included in the unit rate of pipe run. Plates to be of the same pressure rating as values installed on the line.

8 B. The orifice plates shall be complete with carrier ring containing upstream and downstream tappings drilled through the ring to communicate with the upstream and downstream side of the orifice. The orifice shall be constructed from stainless steel to a thickness sufficient to prevent distortion by the differential pressure across it. C. The orifice plate shall be located in the pipeline such that there is no valve head or any other restriction which could cause abnormal flow conditions for at least 12 pipe diameters upstream and 6 pipe diameters downstream of the plate. D. The carrier shall be suitable for installation between flanges suitable for the system in which they are installed. The hydraulic pressure drops across the orifices shall not exceed the figures given on the schematic drawings EXPANSION DEVICES A. Expansion devices on copper pipework shall be manufactured with convolutions of single wall 18/811 stainless steel, argon arc welded to a stainless steel ring with a M.S... backing flange. All internal parts in contact with the fluid shall be stainless steel and the ends shall be flanged to BS B. Expansion devices on steel pipework size 50 mm and below shall be manufactured with convolution of single wall 18/18T1 stainless steel, argon arc welded to heavyweight mild steel end flanged to BS4504. C. Expansion devices on steel pipework size 65 mm and above shall be manufactured with convolutions of heavy wall hot formed Cr-Mo steel welded to mild steel end flanged to BS D. All expansion devices shall be provided with internal sleeves. External sleeves shall be provided on devices in plant-rooms and underground ducts. Pressure rating of expansion devices shall be as per valves and accessories installed on line. E. Angular compensators shall be restrained longitudinally by means of hinged tie bars, the hinges shall be located at the center of movement of the allow single axis of movement. F. Articulated bellows shall be of the fully articulated type with belows used in sets of two with intermediate pipe of mild steel to BS The bellows shall be restrained lengthwise with ball ended tie bars allowing off set movements in all directions at right angles to the axis. G. Each gimbal shall have a double linked tie bar system to enable one end of the unit to take an angular movement in any direction in relation to the other end. Gimbal units shall be used in sets of two to provide the necessary movement. The Specialist Manufacturer shall advise the required length of interconnecting pipework based on the pipework layout and the movement required. H. Before finalizing his working drawings the Contractor shall consult with and take advice from the Specialist Manufacturer to confirm that the allowance for expansion devices. I. The contractor shall also allow in his tender for all expenses incurred by the specialist manufacturer in attending sire to inspect and monitor the installations during the construction stage and to endure all expansion joints are installed in an acceptable manner before operating of the systems commence HOSE FAUCET Hose faucets shall be finished 3/4"(20mm) red brass, compression type with four arm cross metal handle and standard 3/4"(20mm) male hose connection except in toilet rooms and where ever indicated on the drawings they shall be polished chrome plated. Hose faucets in playgrounds shall have a removable handle with lockable feature for misuse by students WATER HAMMER ARRESTOR A. Supply and install water hammer arrestors where shown on drawings. B. Each water hammer arrestor shall be complete as specified herein: 1. Stainless steel shell and adapter. 2. Elastomer bellow.

9 3. Hydraulic displacement fluid. 4. Pressurized insert gas pneumatic displacement chamber mm NPT threaded connection 6. Isolating ball valve. C. Approved manufacturers: 1. JOSAM (USA) 2. ZURN (USA or approved equal 2.34 UTILITIES SERVICE MAINS A. The contractor shall connect the water, service lines to city mains including all necessary excavation, backfilling. B. Contractor shall connect also sewage and rain water pipes to city mains including all necessary civil and mechanical works APPROVED MANUFACTURERS (for valves) Except where otherwise specified, approved manufacturers for valves specified are as follows: 1. Crane Co. 2. Newman- Hattersly 3. VICTAULIC or approved equal. END OF SECTION 15100