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dF ig u re 1 7 9 T y p i c a l P re s s u re I n te n s i fi e rC O P Y R IG H T (2 00 1 ) E A T O N C O R P O R A T IO NCFigu re 17 10 T ypical pressure s witchCO P Y RI GH T (20 0 1 ) E A T O N CO RPO RA TIO NCElectrical SwitchPush Pi nPlun gerAdju stment S pringsHigh Pressu reLow Pressu rePressureSymbolDrainFigu re 17 1 1 Pre ssur e switch opera tionCOPYRIG HT (2 001) EA T ON CORPORA TI ONC....COMCOM....COMCOM....COMCOMNo Switc hes Ma de Low P ressur eSwitch Ma deBoth Switche sMad eFigure 1712 The bourdon tube gaugeCOPYRIGHT (200 1) EA T ON CORPORA TIONC050100200300400500600700Bou rd on T ub eFigure 1713 Sc hrader gauge operationC OP YR I GH T (20 01) EA T ON C OR PO R A TI ONC5000 p si4000 p si3000 p si2022 p