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Model 101-D Differential On-Off Valve

Model 101-D Differential On-Off Valve

The Model 101-D is an automatic control valve that is designed to separate two systems from one another, remaining closed until needed. It has specific use where “System B” must, at times, be fed from “System A”. Typical examples include domestic water systems, fire water systems and other emergency water systems.


  • Feeds “System B” from “System A”
  • Opens fully when activated
  • Field adjustable opening set point
  • Field adjustable closing set point
  • Separate opening and closing speed controls
  • Manual override for opening and closing
  • Can be maintained without removal from the line
  • Factory tested and can be pre-set to requirements
Differential On-Off Valve
Model SheetModel Sheet (metric)SpecificationsAnimationOperations Manual
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