• Post Reply Bookmark Topic Watch Topic
  • New Topic
permaculture forums growies critters building homesteading energy monies kitchen purity ungarbage community wilderness fiber arts art permaculture artisans regional education skip experiences global resources cider press projects digital market permies.com private forums all forums
this forum made possible by our volunteer staff, including ...
master stewards:
  • Anne Miller
  • Pearl Sutton
  • r ranson
  • Nicole Alderman
stewards:
  • Joseph Lofthouse
  • paul wheaton
  • Mike Haasl
master gardeners:
  • jordan barton
  • John F Dean
  • Carla Burke
  • Greg Martin
gardeners:
  • Jay Angler
  • Leigh Tate
  • thomas rubino

Thermal Expansion Valve - I want to make one.

 
Posts: 1
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I want a thermal expansion valve. They are common in HVAC systems but I want one that operates around 200 degrees F. The ones designed for HVAC operate at much higher temperatures I believe. I did find one for sale at this link http://www.mcmaster.com/#temperature-regulating-valves/=o1znnq but I don't want to spend the $1000+ on it. So the easy solution is to make one. Now how... I have some ideas but I am just thinking out loud to see if there is any interest. Essentially, a bulb of gas expands in the presence of heat forcing a piston to extend from a cylinder. The piston causes a valve to open. As the temperature cools, the gas contracts, the piston recedes, and the valve closes. No electricity. Direct(ish) control.
 
a fool thinks himself to be wise, but a wise man knows himself to be a fool - shakespeare. foolish tiny ad:
100th Issue of Permaculture Magazine - now FREE for a while
https://permies.com/goodies/45/pmag
reply
    Bookmark Topic Watch Topic
  • New Topic