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Note: Image represent the 5 outlet model

The 172 series manifold mixing station is designed for use in manifold-based hydronic distribution systems. The 172 station, like the TWISTFLOWTM Series 668S1 distribution manifolds, can be configured with 3 to 13 circuit outlets offering similar benefits with built-in sight flow meters/adjustable balancing valves, and optional TWISTOPTM thermo-electric zone actuators.

The manifold mixing station incorporates a thermostatic actuator with built-in sensor which keeps the flow temperature at a constant set value for use in low temperature systems such as floor radiant panels.

A removable primary circuit hydraulic separator with check valve is also supplied. The hydraulic separator is essential when there is a primary circuit circulation pump and when radiator circuits or fan coils are controlled by thermostatic or thermo-electric valves. When connecting to a Caleffi HYDROLINKTM or hydraulic separator without a primary pump, the hydraulic separator can be removed and the manifold mixing station can be connected directly.

  • Thermostatic fixed point mixing.
  • Pre-assembled manifold mixing station consisting of a supply distribution manifold complete with built-in sight flow gauges and adjustable balancing valves.
  • Return manifold with built-in shut-off valves is suitable for thermo-electric actuators. Complete with built-in sensor to keep flow temperature at constant set value.
  • Includes Grundfos Alpha 25-55U pump.
  • Includes: 3/4" NPT supply/return ball valves.
  • Max working pressure: 150 psi
  • Control temp range: 80° - 130°F
  • Primary inlet max temp: 195°F
  • Outlet center distance: 2"
PEX Loop Fitting Assemblies Options
PEX-AL-PEX Loop Fitting Assemblies Options
Optional Installation Accessories:

Loop End Cap
If you want to use your manifold to heat multiple zones, you can purchase return side actuators that work along side thermostats. The actuators act as zone valves to allow you to use one manifold to control the temperature in different rooms independently.
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Manuals (1)
Number of Outlets:


Max Pressure (PSI):


Max Inlet Water Temp (F):


Control Temp Range (F):

80 to 130°F


Grundfos 25-55U Alpha Pump

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