Page 1 of 2 12 LastLast
Results 1 to 20 of 39

Thread: Installing Danfoss TEV

  1. #1
    Join Date
    Oct 2009
    Location
    Atlanta,Ga.
    Posts
    728
    Post Likes

    Installing Danfoss TEV

    So,I just got this Danfoss TEV,with no decent directions on Brazing in the valve in .Is someone familiar with the installation .Looks like stainless body,Do you use silver(15 percent) Silphos ,or Staybrite?Looks liken the valve can't get too hot.Im usednto also and sporran with copper stubs!!!!

  2. #2
    Join Date
    Oct 2011
    Location
    Chicagoland Area
    Posts
    13,142
    Post Likes
    Copper coated stainless. Use 45% and flux and be gentle with a torch.
    Officially, Down for the count

    YOU HAVE TO GET OFF YOUR ASS TO GET ON YOUR FEET

    I know enough to know, I don't know enough
    Why is it that those who complain the most contribute the least?
    MONEY CAN'T BUY HAPPINESS. POVERTY CAN'T BUY ANYTHING

  3. Likes BadDaddy420 liked this post.
  4. #3
    Join Date
    Nov 2004
    Location
    Northern Calif
    Posts
    487
    Post Likes
    Quote Originally Posted by 2sac View Post
    Copper coated stainless. Use 45% and flux and be gentle with a torch.
    X2, disassemble valve just braze in the body, make sure everything is clean, than reassemble.

  5. #4
    Join Date
    Jul 2002
    Posts
    1,368
    Post Likes
    Wrapped in wet cloth strips, of course.

  6. #5
    Join Date
    Jan 2008
    Location
    LEHIGH VALLEY, PA
    Posts
    852
    Post Likes
    No disassembling the little Danfoss valves . all sealed. they do braise quick

  7. #6
    Join Date
    Oct 2009
    Location
    Atlanta,Ga.
    Posts
    728
    Post Likes
    Thread Starter
    I don't think this valve comes apart.Its OEM for a Ice O Matic ice machine .I know to use a wet rag and heat trap.can I solder it in with stay Brite/Or should I use 45% silver.What do you guys think is best.I'm used to valves with copper stubs.This Danfoss stuff sucks!!!!!!

  8. #7
    Join Date
    Mar 2010
    Location
    Arnold, Mo
    Posts
    1,092
    Post Likes
    Quote Originally Posted by Gleng View Post
    I don't think this valve comes apart.Its OEM for a Ice O Matic ice machine .I know to use a wet rag and heat trap.can I solder it in with stay Brite/Or should I use 45% silver.What do you guys think is best.I'm used to valves with copper stubs.This Danfoss stuff sucks!!!!!!
    I just installed one with the stainless body for the 1st time about a month ago. I had to go back 2xs due to it leaking on the braze joints. I ended up removing it and installing a brass TXV. It was definitely leaking due to installer error.

  9. #8
    Join Date
    Oct 2009
    Location
    Atlanta,Ga.
    Posts
    728
    Post Likes
    Thread Starter
    Flanders:Thats what I'm trying to avoid!! I don't like ANYTHING Danfoss makes!!!What kind of solder or braze were you using?I think I will use 45% silver.Use Heat trap and a wet rag,Heat the valve up quickly.Either way, its a crappy set up, why not just use copper stubs,Like everyone else!!!!.

  10. #9
    Join Date
    Aug 2002
    Location
    Southold, NY
    Posts
    32,837
    Post Likes

  11. #10
    Join Date
    Mar 2008
    Location
    kansas
    Posts
    2,042
    Post Likes
    Honeywell you can buy better but you cant pay more

    I told my wife when i die to sell my fishing stuff for what its worth not what i told her i paid for it

  12. Likes icemeister, N2fords liked this post.
  13. #11
    Join Date
    Oct 2011
    Location
    Harrisburg, NC
    Posts
    1,534
    Post Likes

    Installing Danfoss TEV

    Her ya go...

    A whole lot of good info as well as how to braze the valve in.

    https://youtu.be/YgbY19ktLeg

    Happy watching!


    Sent from my iPhone using Tapatalk
    Last edited by BadDaddy420; 07-22-2020 at 08:53 AM. Reason: Burn joints, braze valves 😉

    I can't fix it if it won't stay broke..

  14. #12
    Join Date
    Oct 2011
    Location
    Harrisburg, NC
    Posts
    1,534
    Post Likes

    Installing Danfoss TEV

    Quote Originally Posted by Gleng View Post
    Flanders:Thats what I'm trying to avoid!! I don't like ANYTHING Danfoss makes!!!What kind of solder or braze were you using?I think I will use 45% silver.Use Heat trap and a wet rag,Heat the valve up quickly.Either way, its a crappy set up, why not just use copper stubs,Like everyone else!!!!.
    The above video explains a lot of why they use stainless.

    One note.... the 15% will NOT form a shoulder on the joint seam like copper to copper, don’t try to keep filling it.

    TBH, Danfoss valves seem to maintain a steadier superheat that Sporlan and Emerson. Easier to adjust superheat (1 Allen wrench vs 2 adjustable and a valve wrench/packing wrench... and please I hope everyone is loosening the packing on a Sporlan before adjusting and tightening afterwards, right?).

    But Sporlan seems more common on heavier refrigeration, Emerson on smaller refrigeration and AC, and Danfoss wherever in between.

    But everyone’s experience is different.


    Sent from my iPhone using Tapatalk
    Last edited by BadDaddy420; 07-22-2020 at 08:56 AM.

    I can't fix it if it won't stay broke..

  15. #13
    Join Date
    Jul 2000
    Location
    Guayaquil, EC
    Posts
    14,630
    Post Likes
    Th brazing on a Danfoss TUV expansion valve requires a slightly different technique than what we are accustomed to. The key to understanding how to do it is to apply a low flame to the copper first. Lt the copper preheat the stainless without a direct flame. When the copper reaches temperature to flow the 15% silver solder, briefly move the flame to the stainless connection (1-2 seconds max) while applying just a touch of silver solder to the top and bottom of the joint.

    Don't overheat the valve connection so much as to burn the stainless steel.
    Don't overdo the silver solder. Just a touch is all that's needed. If the joint looks like it's full, you've applied too much solder,
    Don't use a wet rag. It's not needed and just gets in the way.

    Here's a video from Danfoss:


  16. Likes rickl, trippintl0, VTP99 liked this post.
  17. #14
    Join Date
    Oct 2011
    Location
    Harrisburg, NC
    Posts
    1,534
    Post Likes
    Quote Originally Posted by icemeister View Post

    Don't overheat the valve connection so much as to burn the stainless steel.
    Don't overdo the silver solder. Just a touch is all that's needed. If the joint looks like it's full, you've applied too much solder,
    Don't use a wet rag. It's not needed and just gets in the way.
    First time I installed one when Manitowoc was first using them, I filled the valve up with 15%.

    Never read the directions. 2nd one went in beautifully.


    Sent from my iPhone using Tapatalk

    I can't fix it if it won't stay broke..

  18. #15
    Join Date
    Mar 2010
    Location
    Arnold, Mo
    Posts
    1,092
    Post Likes
    Quote Originally Posted by Gleng View Post
    Flanders:Thats what I'm trying to avoid!! I don't like ANYTHING Danfoss makes!!!What kind of solder or braze were you using?I think I will use 45% silver.Use Heat trap and a wet rag,Heat the valve up quickly.Either way, its a crappy set up, why not just use copper stubs,Like everyone else!!!!.
    1st trip was 15%. 2nd trip 45% with flux. 3rd trip I brought a new TXV.

  19. #16
    Join Date
    Feb 2016
    Posts
    42
    Post Likes
    I had to install a danfoss hot gas valve on a mani a few months back with similar stubs. I was thinking id use staybrite 8 but decided to ask mani tech support. They said just braze with 15%. Went very smoothly. Follow your normal practices to keep valve from heating up to much and just be easy with the torch.

  20. #17
    Join Date
    Oct 2016
    Location
    Clearwater, Florida
    Posts
    1,709
    Post Likes
    Danfoss makes great stuff in my opinion.

    But I'm biased. Being Danish and all, I feel I'm obligated to install as much Danfoss as I can.

    I tried a Danfoss TXV once, didn't go well.... but I didn't know the proper way either, my 2nd or 3rd txv ever.

  21. #18
    Join Date
    Oct 2009
    Location
    Atlanta,Ga.
    Posts
    728
    Post Likes
    Thread Starter
    To Icemeister; thanks for the Danfoss video.It greatly helped.I installed the valve without any problem.I did use Flux with 45% silver.I know the video says the flux can cause corrosion.But it makes the silver flow better.I cleaned it off well.If the valve leaks from corrosion.I Will be long gone by then!!!!!!

  22. #19
    Join Date
    Oct 2009
    Location
    Atlanta,Ga.
    Posts
    728
    Post Likes
    Thread Starter
    hey Olivero!!!.Danfoss makes some good stuff.But some stuff also sucks.Try their Low pressure controls.Set it on 5#.it will shut off at 20.Scales are way off.Not with a Penn.Set a penn at 103 it shuts off at 10#.When you buy a brand new Trenton condensing unit with a Danfoss.Thre is a note on the control that says:set this control with a set of gauges, because it is going to be way off!!!!Sorry ,not a Danfoss fan.

  23. #20
    Join Date
    Mar 2007
    Location
    At The Point Of No Return
    Posts
    17,288
    Post Likes
    15% no rag

Page 1 of 2 12 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •