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Model 127-420 Pressure Reducing/ Sustaining/ Check Valve

Model 127-420 Pressure Reducing/ Sustaining/ Check Valve

The Model 127-420 has a wide range of applications: anywhere a pressure must be reduced to a manageable level and the upstream system must be protected from low pressure.

Typical examples include: 

  • High rise and commercial buildings
  • Pump systems
  • Zone pressure control in municipal and industrial water
  • Irrigation systems

Series Features

  • Reduces a higher inlet pressure to a lower outlet pressure
  • Constant outlet pressure over wide flow range
  • Prevents upstream pressure from falling below a predetermined minimum
  • Check feature closes valve on pressure reversal
  • Pilot-operated main valve not subject to pressure fall off
  • Upstream and downstream pressure are adjustable with single screw
  • Can be maintained without removal from the line
  • Adjustable opening/response speed
  • Factory tested and can be pre-set to your requirements
Model SheetModel Sheet (metric)SpecificationsAnimationOperations Manual
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