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Mechanical Thermal Actuator — image 1
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Mechanical Thermal Actuator

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Model information

Source
Printables
Category
Garage
License
Creative Commons — Attribution — Share Alike
DetailsMakes & commentsRemixesCollectionsRelated

Replacement for 24W 2V NC actuator for in-floor heating.  Mine are always breaking, and I got tired of replacing them.  

  • Con: these are mechanical, not automatic, so any attached thermostats become useless
  • Pro: they're a LOT cheaper to replace
  • Pro: the threading allows for very fine adjustment

Printing

  • PETG (PLA works, but will soften in heat)
  • 100% infill - these aren't big parts
    • 15% is fine for the key
  • No brim or supports needed

Use

  • Print & cool
  • Glue a m3 nut into valve_screw_cap
  • Use a tiny bit of oil to mesh the threads in valve_screw_cap and valve_screw 
  • Screw the cap all the way into the valve, then 90% unscrew
  • Snap valve_screw over the actuator attachment (example)
  • Use the valve_screw_key or anything similarly shaped to adjust the actuator to the desired depth

Tags

heatingthermalactuatorthermostatthermostatmountheatingsystemheatingpumpinfloor