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.

Anyone recognize this TRV?

Steamhead
Steamhead Member Posts: 17,311
in Strictly Steam


It's one of several in a church we're working on, and is probably 20-30 years old. There are no markings on them whatsoever. They want to install more TRVs, and keep the same model if possible. Thanks in advance for any information.
All Steamed Up, Inc.
Towson, MD, USA
Steam, Vapor & Hot-Water Heating Specialists
Oil & Gas Burner Service
Consulting

Comments

  • reggi
    reggi Member Posts: 523
    edited March 2022
    @Steamhead Whoever got the first Patent..it looks that old 

    Just keeps reminding me of Honeywell but Danfoss keeps showing up but they all seem to be embossed 
    One way to get familiar something you know nothing about is to ask a really smart person a really stupid question
  • Intplm.
    Intplm. Member Posts: 2,146
    The head looks like a Danfoss. The body I have never seen before. Might be a very early Danfoss.
  • ScottSecor
    ScottSecor Member Posts: 885
    Just did a quick search of your image and came upon this website. Looks like the body may be a Danfoss RAVL.
    https://uptimefab.com/2016/04/12/honeywell-evohome-user-review/danfoss-ravl-valve/
    Intplm.
  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 9,130
    edited March 2022
    OMG... I do recognize him... His name is Dan.... I was friends with his brother Lukas.





    Edward Young Retired

    After you make that expensive repair and you still have the same problem, What will you check next?

    Hap_Hazzard
  • Hap_Hazzard
    Hap_Hazzard Member Posts: 2,846
    Remember his other brother, Joe?

    Just another DIYer | King of Prussia, PA
    1983(?) Peerless G-561-W-S | 3" drop header, CG400-1090, VXT-24
  • Larry Weingarten
    Larry Weingarten Member Posts: 3,554
    Hi @Steamhead , I looked all over the web and found some similar valves in style and finish, (all Danfoss) but nothing exactly matching. Anyone have some old Danfoss catalogs?

    Yours, Larry
  • Steamhead
    Steamhead Member Posts: 17,311
    Thanks, all- I'll call Danfoss and see what they have to say.
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • Dennis1679
    Dennis1679 Member Posts: 25
    The head looks like an ISTA but the body not so much. I installed a lot of them a long time ago, maybe over 25 years ago.

Categories