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4.2.4 Check Valves <br /> ' <br /> Swing check valves for the 4-inch lines shall be 4-inch diameter center pivot dual non-slam type, , <br /> cast ironbodied with bronu and stainless trim as manufactored by Golden-Anderson or approved <br /> equal. Check valves f�2-inch lines shaU be 2-inch bronze check valve CVY Series by Waus � <br /> Regulator a appt+oval equal. <br /> 42.5 Air and Vacuum Valve ' <br /> Air and vacuum valve for the well head is required to allow air release du�ing well pump start <br /> up and v�cmun relief during pump shut down. 'Il�e valve shall be as manufactured by APCO , <br /> (Model 141)a�Golden Anderson a approved equal. <br /> 4.2.6 Isolarion and Gate Valves � <br /> Isolation valves for the 4•inch lines shaU be knife gate valves manually operated 4-inch diameter <br /> DeZLTRIK KGS,4,Ll, S2,B, M, B1,CR*MN-LV or approved equal. Gate valves for 2-inch � <br /> lines shall be 2-inch bronu gate valves GV Series by Watts Regulator or approval equal. <br /> 42.7 Booster Pumv � <br /> The booster pump shsll be a centrifugal pumping �ni� constant speed, single stage, horizontal <br /> end s�tion and be elecuic motor driven. The pumping unit shall be equipped with sleeve ' <br /> mounted, mechanical shaft seals. Casings shall be ca�swcted of cast iron, impeller and shaft <br /> sleeves consavcted of eitha high g�ade steel or bronze. � <br /> The pump motar shall be constant speed,oper►drip proof.ball bearing onit of ample power f� <br /> stating and opeiating the pomp under the foll range of the operating curve withoue overloading. � <br /> an <br /> \ o The�empeiawre rise of the motor shall be to NEMA Standard MG-1-12.42 or Class F insulation. <br /> �� <br /> The motor shall be suitable fa operation as specified on Sheet 2 and shall have a 1.15 service � <br /> facta�. Nominal mowr horsepower rating shall be nominal 10 (not including the 1.15 service <br /> fa�ctor). M000r shall be manufacwred by U.S. Motor or approved equal. <br /> The booster pump and motor shall be capable of producing a 150 gpm at a total dynamic t�ad � <br /> (TDI� of 18S feet. 'ILe pump shall be a Be�celey Model Bl-1/2TPM a approved equal. <br /> Operating voltage shall be as specified on Sheet 2 of the Drawings. � <br /> 4.2.8 Pressiu+e Tank <br /> The laceable bladder ure t9nic shall be desi ed n � <br /> Pre-P���� reP P� � and co swcted �n <br /> accoidance with ASME Boiler and Vessel Code,Section VIII and shall be fumishefl with a safety � <br /> relief valve to prevent overpressurization of the�nk. Only plate steel in Table UCS-23 of ASME <br /> code shall be used. Design pressiu�e shall be at least 10 percent above the maximum operating <br /> pressure and shall be a minimum of 80 psig. The tank stiall have a minimum 100 gallon acwal � <br /> storage capacity. <br /> TS-4-2 � <br /> , <br />