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Q. Install flanges on valves,apparatus,and equipment having 2-1/2 inch and larger connections. <br /> R. Install flexible connectors at inlet and discharge connections to PSPs and other vibration producing equipment. <br /> S. Install strainers on the supply side of each control valve, pressure regulating valve, solenoid valve, traps, and <br /> elsewhere as indicated. Install 3/4 inch NPS nipple and ball valve in blow down connection of strainers 2 inch and <br /> Larger. Use same size nipple and valve as blow-off connection of strainer. <br /> T. Anchor piping to ensure proper direction of expansion and contraction. Install expansion loops and joints as <br /> indicated on the Drawings and specified in Division-15 Section"Anchors and Supports." <br /> U. Install drip legs at low points and natural drainage points in the system, such as at the ends on mains, bottoms of <br /> risers,and ahead of pressure regulators,control valves,isolation valves,pipe bends,and expansion joints. <br /> 1. On straight runs with no natural drainage points,install drip legs at intervals not exceeding 200 feet where pipe <br /> is pitched down in the direction of the steam flow and a maximum of 150 feet where the pipe is pitched up so <br /> that condensate flow is opposite of steam flow. <br /> 2. Size drip legs at vertical risers full size and extend beyond the rise. Size drip legs at other locations same <br /> diameter as the main. Provide an 18 inch drip leg for steam mains smaller than 6 inch. In steam mains 6 <br /> inches and larger,provide drip legs sized 2 pipe sizes smaller than the main,but not less than 4 inches. <br /> 3. Drip legs,dirt pockets,and strainer blowdowns shall be equipped with gate valves to allow removal of dirt and <br /> scale. <br /> t4. Install steam traps close to drip legs. <br /> V. Flash Tanks: Pitch condensate lines towards flash tank. If more than one condensate line discharges into flash tank, <br /> install a swing check valve in each line. Install a thermostatic air vent at the top of the tank. Install an inverted <br /> bucket or float and thermostatic trap at the low pressure condensate outlet, sized for triple the condensate load. <br /> Install a safety relief valve at the tank top. Install a pressure gage, gate valve, and swing check valve on the low <br /> pressure(flash)steam outlet. <br /> 3.03 BANGERS AND SUPPORTS <br /> A. General: Hanger, supports, and anchors devices are specified in Division 15 Section "SUPPORTS AND <br /> ANCHORS." Conform to the table below for maximum spacing of supports: <br /> B. Install the following pipe attachments: <br /> 1. Adjustable steel clevis hangers for individual horizontal runs less than 20 feet in length. <br /> 2. Adjustable roller hangers and spring hangers for individual horizontal runs 20 feet or longer. <br /> 3. Pipe roller complete-MSS Type 44 for multiple horizontal runs,20 feet or longer,supported on a trapeze. <br /> 4. Spring hangers to support vertical runs. <br /> 15520-7 No.99132-CP2 <br />