4.4 SR 02-21-2023 - Laserfiche WebLink

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City of Elk River Design Standards design. Guide tracks employing multiple tracks or of a male n�pe design are not allowed. The wedge to stem design on 4" - 48" shall emplov the use of an independent stem nut. An integral stem nut design in those sizes is not allowed. E. All body to body bolting material shall be Type 304 SS, de�Telop the ph��sical strength characteristics ofASTMr�307 and shall have the dimensional requirements ofAWWr� G 515 and ANSI 18.2.1. All body to bonnet bolting shall be of the same size and length. All bolts shall have square or hexagonal heads. 1�letric bolts, socket headcap screws, or recessed alien-head ty�pe bolts filled with hot-melt ty�pe wax will not be allowed. F. Designs employing two-piece independent thrust collars will not be allowed. All stem diameters and the prescribed number of turns to open shall be as detailed in the applicable portions of Table 4 of AWWA G515. The stem o-rings above the thrust collar shall be replaceable with the valve fully open and while subjected to full working pressure. 0-rings set in a cartridge rype design will not be allowed. Valve shall be equipped with thrust washers above and below the thrust collar to reduce the operating torque of the valve. G. All internal and external surfaces of the valve shall be coated prior to assembly, with epo��y-. All val�re body- gaskets shall be of a pressure energized o-ring design. H. All valves 14" and larger shall be equipped with lifting lugs or eyebolts for lifting. All valves 16" and larger shall be equipped with bevel gearing for horizontal or spur gearing forvertical installation to reduce operating torque. Valves equipped with bevel gears shall be equipped with flushing ports on each wedge guide channel. Where allowable, �ralves should be i�istalled in the vertical position. Valves employing the use of an external and/or integral by--pass for torque reduction are not allowed. I. Valves shall be manufactured bv a company domiciled in the United States, as well as have a history- in manufacturing Resilient Wedge Gate Val�res greater than 25 years. All Resilient Wedge Gate Val�res shall be American Flow Control Series 2�00 or Engineer pre- approved equal. J. Valve boxes shall be 5'/4" diameter shaft suitable for 7'-6" of cover over the top of the watermain. Bo�es shall be cast iron screw type two-piece boxes with the word "WATER" on the lid. Valve bo�es shall be Ty�ler 6850 with 5'/4" Drop Lid, or equal. K. All valve boxes shall be installed upon the valve with the use of a Gate Valve Adaptor as manufactured by� r�daptor Inc. or approved equal. The adaptor shall be considered incidental to the valve box installation. 10. Trace Wire A. Open Trench - Trace wire shall be #12 AWG Copper Clad Steel, High Strength with minimum 4501b. break load, with minimum 30 mil HDPE insulation thicl�ness. B. Directional Drilling/Boring - Trace wire shall be #12 AWG Copper Clad Stee1, Extra High Strength with minimum 1,1501b. break load, with minimum 30 mil HDPE insulation thickness. C. Trace wire — Pipe Bursting/Slip Luiing - Trace wire shall be 7 x 7 Stranded Copper Clad Steel, Extreme Strength with 4,7001b. break load, with minimum 50 ml HDPE insulation thickness. Construction 1. Wet Ta� with Valve The tapping sleeve and resilient seated gate valve assembly shall be installed on the watermain pipe after thoroughly cleaning the pipe to be tapped. The sleeve shall be assembled on the pipe and the bolts tightened per the manufacturer's specifications. Shell cutters shall be the maximum size allowed for the tap being made. Size on size taps shall utilize an inch undersized shell cutter. OO City of Elk River, Minnesota — All rights reserved I 2