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  1. Thread: nitro brazing

    by Pneuma
    Replies
    32
    Views
    2,114

    Green88 so you don't flow while brazing? Just...

    Green88 so you don't flow while brazing? Just flush the pipe and then keep it sealed. I think that is exactly the way to go. Thanks. Saves on the nitrogen also.
  2. Thread: nitro brazing

    by Pneuma
    Replies
    32
    Views
    2,114

    GA. If you open the end of a duct is there no...

    GA. If you open the end of a duct is there no static pressure in the middle? No static no flow
  3. Thread: nitro brazing

    by Pneuma
    Replies
    32
    Views
    2,114

    How do you know you have nitrogen in the fitting...

    How do you know you have nitrogen in the fitting your brazing. Having no problem is different than doing it well. I'm not looking for help. Just saying if you have X static in the joint you have to...
  4. Thread: nitro brazing

    by Pneuma
    Replies
    32
    Views
    2,114

    nitro brazing

    Brazing with nitrogen is hard. You can't flow through a tube or a duct without building static. Science right? Well that static can at times pushe the brazing material out of the joint. So at...
  5. Replies
    24
    Views
    2,771

    The flame is conductive and the circuit is...

    The flame is conductive and the circuit is between the flame rod and the burner. So be sure to clean the metal parts of the burner near the flame rod so you get good current. You should also put a...
  6. Thread: Odd Tubing Size

    by Pneuma
    Replies
    5
    Views
    948

    I did some work in apartment building built in...

    I did some work in apartment building built in the 30's. the plumibing copper was all odd sized stuff. Apparently before they had standards companies made copper pipe and the fittings to go with...
  7. Replies
    615
    Views
    108,977

    oh s%6&!

    This was years ago. Low income high rise, no cooling call. Found the Honeywell T87-f being used as an incense holder and of course the incense was keeping the mercury bulb from moving. Called back...
  8. Thread: T775 changeover

    by Pneuma
    Replies
    0
    Views
    285

    T775 changeover

    I want to use a honeywell T775 to control a two way valve on a 100% OA air handler. I want to automatically switch the action of the control when the system is flowing chilled water or hot water. ...
  9. Replies
    22
    Views
    1,617

    I used to teach my apprentices, yes I am union, a...

    I used to teach my apprentices, yes I am union, a more detailed view of this. It went like this. As a steamfitter you are an skilled craftsman, you are your own man, a hired gun. You own...
  10. Thread: welding machine

    by Pneuma
    Replies
    6
    Views
    805

    welding machine

    I'm looking to buy a welding machine for retrofit jobs, small pipe 4" or maybe an occasional 6" flange. Electric single phase 230 volt. I'm not a welder, I just want to have a machine to use so I...
  11. Replies
    4
    Views
    780

    These guys sell a lot of SPX stuff so I think...

    These guys sell a lot of SPX stuff so I think they are authorized. But who knows, the warranty is not a big deal to me, I like this detector and for 196out the door, if I can get a couple of...
  12. I have the Milwaukee m-18 4 piece set. light,...

    I have the Milwaukee m-18 4 piece set. light, impact driver, hammer drill and sawzall. Maybe I am being too rough on the tools, but I expect a tool should be designed to fall off a six foot ladder...
  13. Replies
    4
    Views
    780

    tif zx-1 good deal

    $196 including 10 bucks for shipping. http://www.ntxtools.com/

    These are great leak detectors, but a little fragile. Mine is acting alittle funny lately so I checked this place after they sent me...
  14. Replies
    186
    Views
    32,538

    I just ordered the bluevac and the appion...

    I just ordered the bluevac and the appion megaflow kit from Truetech tools. I got the kit without the gauges. Used it on a 10 split system with 120' of 1-5/8" pipe. Worked great, having the big...
  15. Replies
    8
    Views
    2,236

    I've had problems with it too. I got a new...

    I've had problems with it too. I got a new sensor for it and it's still all over the map. I had to buy a supco just to get a job done, even that one seemed iffy, I'm going to order the bluvac.
  16. Thread: time on break

    by Pneuma
    Replies
    5
    Views
    914

    no, just y-1

    no, just y-1
  17. Thread: time on break

    by Pneuma
    Replies
    5
    Views
    914

    existing stat is an old honeywell chronotherm,...

    existing stat is an old honeywell chronotherm, the biege and brown one with the fold down front cover. I know about delay on break timers, but if the fan is not on then i don't want to run for 5...
  18. Thread: time on break

    by Pneuma
    Replies
    5
    Views
    914

    time on break

    I have a system with two condensing units and one air handler.

    The air handler has an auxilliary contact the energizes a DPDT relay allowing the y1 and y2 to pass to each condensing unit. The...
  19. Replies
    26
    Views
    3,713

    groinocologist! Am I the first one to say that? ...

    groinocologist! Am I the first one to say that? Must be a slow day. Actually just find what you like, everyone is different. That is the beauty of this trade. I like learning new things and I...
  20. Replies
    42
    Views
    15,524

    When I taught basic electricity I took a shop...

    When I taught basic electricity I took a shop vac, turned it on and took an amp reading. Then I wrote it on the board, Then with the amp probe off, I put my hand over the end of the hose and had...
  21. Replies
    5
    Views
    695

    maybe a bad oxygen sensor. Maybe the senor just...

    maybe a bad oxygen sensor. Maybe the senor just came loose. How old is the sensor?
  22. Replies
    31
    Views
    1,666

    The best things about digital is being able to...

    The best things about digital is being able to use one set of manifolds for 22 and 410A. An analog gauge with both a 410A scale and an r-22 scale is hard to read on the 22 scale and is not granular...
  23. Replies
    8
    Views
    1,583

    I'd have to buy a new meter. I don't think I'd...

    I'd have to buy a new meter. I don't think I'd ever be able to trust it.
  24. Replies
    4
    Views
    779

    combustion analyzer for commercial

    I'm getting some work on larger boilers now, 1 million btu up to 4 million BTU, I even have a couple of condensing 2 million btu boilers under contract, Hydrotherm KN-20. So I have the TSI CA-calc...
  25. Replies
    17
    Views
    1,549

    Bacharac leakator jr. it's the only one I have...

    Bacharac leakator jr. it's the only one I have ever owned. It's worked well for me and I found leaks I could not even smell, but soap bubbles confirmed the leak.
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