Laserfiche WebLink
f.r. mahony & associates, inc. <br /> tel. 781.982.9300 <br /> fax. 781.982.1056 <br /> water supply and pollution control equipment <br /> info@frmahony.com <br /> rma www.frmahony.com <br /> 273 Weymouth Street< Rockland,MA 02370 <br /> Operation Conditions GRINDER PUMP PERFORMANCE CHARACTERISTICS <br /> The Heritage Park <br /> Collection Area had a <br /> 210 <br /> calculated TDH (Total <br /> Dynamic Head) of 138 fir, _ <br /> Feet. It was the highest xz. IL <br /> TDH calculated at f.> <br /> simultaneous operating PiRFS +I41 ,� 17M DF,%�Pnesrlunr <br /> conditions with the ,. <br /> expected number of <br /> pumps operating in each y 1 <br /> zone, or the head of an t7 - <br /> 010 <br /> individual pump <br /> operating in a single zone �' ,gin go ` <br /> condition. <br /> It was well within the .a� - <br /> 1 <br /> operation range of the _ <br /> Y <br /> { w <br /> pump. 20 � I D <br /> Operating range ofE/One ,, 20 <br /> pumps from 0-185 feet 5 l <br /> TDH and from 0 to -60 t, <br /> feet TDH. +� <br /> r <br /> Anti-siphon valves in <br /> E/One cores provide for $> ' <br /> negative head pumping "3 <br /> ; GO <br /> In common systems with --� -' '--- ' <br /> a 61d <br /> negative heads of 25-30 t„ 1«+1AtKar,{,a us1 <br /> feet or more we <br /> recommend the use of <br /> combination air/vacuum <br /> release valves as described <br /> SEWER SYSTEMS <br /> below. Environment One Cotpofaticm <br /> 30 DuPaul Street 41 Bayberry Hill Road <br /> Southbridge, MA 01550 W.Townsend, MA 01474 <br /> tel. 508.765.0051 tel. 978.597.0703 <br />