Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

Old thermostatic valve


In the natural history museum yesterday this is what I’m taking pictures of

Comments

  • Steamhead
    Steamhead Member Posts: 17,337
    Don't recognize the brand, but this valve is pneumatically operated. The little pipe comes from an air compressor somewhere in the building.
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
    mattmia2
  • Steve_210
    Steve_210 Member Posts: 647
    Yeah, don’t know if it’s still an operation. Danfos TRV right beside it on another one.