Global Performance. Personal Touch.

Model 3331 One-Way Altitude Valve

Model 3331 One-Way Altitude Valve

The Model 3331 is applicable anywhere it is necessary to automatically maintain the water level in elevated storage tanks or reservoirs. Such applications occur in municipal water, rural water, industrial plants and fire protection systems.


  • Automatic tank fill and shut-off without the use of floats or sensors
  • Accurate shut-off to within inches of set point
  • High level point adjustable with single screw
  • Exhaust-to-atmosphere operation allows minimum pressure loss
  • Can be maintained without removal from the line
  • Adjustable response speed
  • Factory tested and can be pre-set to requirements
Model SheetModel Sheet (metric)SpecificationsAnimationOperations Manual
PDF Logo PDF Logo PDF Logo