The AQT-390 valve is designed to meet your needs on large industrial water conditioning systems. Its 3” inlet-outlet connections allow for 250 gpm of continuous flow rate. It is ideal for filters systems with tanks up to 42” diameter and for softener systems with tanks up to 60” diameter. The AQT-390 can also configure one valve or multiple valves systems, and with the electronic NX controller programming and ease of operation are literally at your fingertips. NHWB pistons are available for your convenience. Timer, meter and electronic NX controllers available.


  • Adjustable, 5-cycle control delivers upflow back wash, downflow brining, slow rinse, rapid rinse and downflow service
  • Choice of 7 or 12 day clock or meter initiated regeneration
  • Designed for single tank or multi-tank systems, alternating or interlocking
  • Continuous flow rate of up to 250 GPM

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