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Executive Ordel -;-70-164 <br /> Figure 2A-5 <br /> Operation of Tank Drain Check® ON ]iN¢�� cllON- <br /> 'OFF' <br /> REMOTE VAPOR PUMP itE119E VAPOR PUMP <br /> CHECK GRADE LEVEL �CHECK r GRADE UE%a <br /> VALVE VALVE <br /> ACCESS ACCESS <br /> PORT S 1 SEALED CAP <br /> VAPORS IT <br /> TO COIECTION UNIT TO COI CTI[IN LPN IT <br /> SLOPED TO T SLOPED TO TANKS <br /> TAMC PRESSURE TAN( PRESSURE V_-�---y TAMC PRESSURE VAPIIis <br /> FROM DISPENSERSA_ WS FRDN DISPENSERS TANG <br /> G ID DRATO PRESSURE <br /> THE TANK LIQUID <br /> COLUMN VALVE CLOSES DOWN <br /> M BE THE U ffj� CHECK VALVE THUS PREVENTING <br /> POINT THEMR I I ALLOWS COLLECTED FPRE <br /> ' ANY BACKFLOW IN <br /> W VAPO(VACUUM SIDE) PIPING - LIQUID TO FLOW THE SYSTEM AND <br /> FREELY TO TANKS PREVENTING VACUUM <br /> ' IN THE TANKS. • <br /> LDV PRESSURE <br /> LIQUID CaJJMN <br /> FIGURE 1 FIGURE 2 <br /> CHECK VALVE, NO C❑LLECTI❑N CHECK VALVE, DURING C❑LLECTI❑N <br /> VALVE IS NORMALLY FLOODED AS SHOWN <br /> i -� <br />