• Caleffi Differential Bypass - 519502A

    - 3/4 inch NPT with 3/4 inch NPT Outlet

    Product ID • CAL519502A00

  • $64.75
  • Quantity:
  • Free Shipping Eligible


Caleffi Differential Bypass - 3/4 inch NPT with 3/4 inch NPT Outlet - 519502A.

The differential pressure by-pass valve is used in systems with a fixed speed circulating pump supplying several zones controlled by two way zone valves. This valve ensures that the head pressure of the pump is proportional to the number of two way valves being closed. It will bypass the differential pressure created by the pump as the zone valves close, thus eliminating water hammer noise.

Ideal for Radiant Panel or Baseboard Heating Systems

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Technical Specs

Caleffi Differential Bypass Valve - 519502A Techs and Specs

  • Size
    3/4 inch
  • Connection
  • Adjustable Pressure
    2 to 10 PSI
  • Max Gallons Per Minute
    9 GPM
  • Max temperature
    230 Degree F
  • Max pressure
    150 PSI

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