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Model 127NR Fire Flow Bypass Valve

Model 127NR Fire Flow Bypass Valve

The Model 127NR is used in conjunction with a smaller, parallel valve in those systems that must provide both normal usage and fire flow. The small valve provides normal flow at a lower outlet pressure. The 127NR provides fire flow at a higher outlet pressure.


  • Valve remains closed during normal usage
  • Automatically opens on a drop in downstream pressure
  • Provides fire flow at higher outlet pressure
  • Trip point and outlet pressure are both adjustable
  • Adjustable opening/response speed
  • Valve is manually reset to return to normal flow
  • Can be maintained without removal from the line
  • Factory tested and can be pre-set to requirements
Model SheetModel Sheet (metric)SpecificationsAnimationOperations Manual
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