Vacuum Catalogue - Edwards

Technical DataOrdering InformationComparative pumping speed18000 ls -1ISO pumping speed†Nitrogen 8000 ls -1Helium 16000 ls -1Max throughput (nitrogen) 24 mbar ls -118 Torr ls -1Critical backing pressure(DC704EU)1.3 mbar /1 TorrMin backing pump displacementfor max throughput 135 m 3 h -180 ft 3 min -1Recommended backing pump‡ GXS250, E2M175Recommended fluidDC704EUFluid charge (dry)3600 ml / 3.8 qtInlet/backing connection ANSI20/ANSI4 orISO630/ISO160Water connection3/4 inch NPT femaleHeater power12.6 kW / 16.9 hpWarm up time60 minMinimum cooling water flow at25°C 960 l h -1 / 4.2 US gal min -1Pressure drop across coolingwater supply1.2 bar / 17.4 psiWeight275 kg / 605 lbsProduct DescriptionHT20B ANSI20/ANSI4, 200VHT20B ANSI20/ANSI4, 220VHT20B ANSI20/ANSI4, 380VHT20B ANSI20/ANSI4, 400VHT20B ANSI20/ANSI4, 415VHT20B ANSI20/ANSI4, 440VHT20B ANSI20/ANSI4, 460VHT20B ANSI20/ANSI4, 480VHT20B ISO630/ISO160, 200VHT20B ISO630/ISO160, 220VHT20B ISO630/ISO160, 380VHT20B ISO630/ISO160, 400VHT20B ISO630/ISO160, 415VHT20B ISO630/ISO160, 440VHT20B ISO630/ISO160, 460VHT20B ISO630/ISO160, 480VOrder No.B31420200B31420220B31420380B31420400B31420415B31420440B31420460B31420480B31422200B31422220B31422380B31422400B31422415B31422440B31422460B314224803Page125† ISO speed and throughout data obtained with total pressuremeasurement. Partial pressure readings typically increase data by~30%. ISO speed measurements are typically 10% less than AVSmeasurements for the same pump.‡ These are given for guidance, please contact Edwards for arecommendation of pump combinations best suited to yourapplication.Shop online at www.edwardsvacuum.com