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  1. #14
    Join Date
    Sep 2002
    Posts
    720
    Quote Originally Posted by AirTechMech View Post
    Referman,
    Where is your goretex in the back of the shell?
    On the other case.

  2. #15
    Join Date
    Sep 2002
    Posts
    720
    So far these are working much better than I thought they would. Had to adjust charge on a unit and the control for refrigerant is really good. Never thought I would say this about a JB manifold. Time will tell.

  3. #16
    Join Date
    Apr 2012
    Location
    Chicago, IL
    Posts
    44
    A guy I work with has these JB gauges. He really likes them, and has talked with the engineers at JB (they're local, just over in Aurora), and said they're real cool guys. I got a chance to use these last week, evacuating/charging a 410a unit we installed. I LOVE the idea of a ball valve manifold, and the swivel hose hangers are handy to keep the hoses out of the way. Have heard of JB manifolds in the past having leak/wear issues, but the ball valves should fix that for sure. I still just use the cheapo YJ 3-valve, but I'm due for a better set and am thinking about getting these JBs. Only thing I don't like is the knobs JB uses. It's great that they're marked showing the valve position, but I like having the knob-shape for turning, but I guess that's no real big deal. I also might just get the blue Imperial 4-valve manifold, not sure which yet. Either set I buy, I'd eventually replace the gauges themselves with a nice set of Marsh's. I'm not into the whole digital gauge trend. Sorry for the long post -- I'll get to the point:

    You folks out there with these manifolds. . . Still really like them???

  4. #17
    Join Date
    May 2010
    Location
    Tennessee
    Posts
    360
    I really love my J/B 4 valve, ball valve manifold, and I really love my Ak-900 ( I have had no issues with either ). Its a shame your not into the didital gauges, because there the way to go. I would not say that its a trend to stay up to date, its just smart, and shows you care. When you do make the switch you will say to yourself why didnt I make this switch sooner, and then educate the next person on them.

    Quote Originally Posted by jw-lu597 View Post
    A guy I work with has these JB gauges. He really likes them, and has talked with the engineers at JB (they're local, just over in Aurora), and said they're real cool guys. I got a chance to use these last week, evacuating/charging a 410a unit we installed. I LOVE the idea of a ball valve manifold, and the swivel hose hangers are handy to keep the hoses out of the way. Have heard of JB manifolds in the past having leak/wear issues, but the ball valves should fix that for sure. I still just use the cheapo YJ 3-valve, but I'm due for a better set and am thinking about getting these JBs. Only thing I don't like is the knobs JB uses. It's great that they're marked showing the valve position, but I like having the knob-shape for turning, but I guess that's no real big deal. I also might just get the blue Imperial 4-valve manifold, not sure which yet. Either set I buy, I'd eventually replace the gauges themselves with a nice set of Marsh's. I'm not into the whole digital gauge trend. Sorry for the long post -- I'll get to the point:


    You folks out there with these manifolds. . . Still really like them???

  5. #18
    Join Date
    Sep 2005
    Location
    Atlanta GA area
    Posts
    21,176
    Quote Originally Posted by JTCHVAC View Post
    I really love my J/B 4 valve, ball valve manifold, and I really love my Ak-900 ( I have had no issues with either ). Its a shame your not into the didital gauges, because there the way to go. I would not say that its a trend to stay up to date, its just smart, and shows you care. When you do make the switch you will say to yourself why didnt I make this switch sooner, and then educate the next person on them.
    Local HVAC Guy I talk to regularly; He kept saying "Digitals are too expensive, I do not need them." Guy finally bought a used set (at a pawn shop), and within a week was saying "I wish I had spent the $$$ years ago, I was being a cheap-skate." However he is still a penny pincher... <grin>

    Digitals are worth every penny of the cost!
    GA-HVAC-Tech

    Quality work at a fair price with excellent customer service!

    Romans Ch's 5-6-7-8

    2 Chronicles 7:14

  6. #19
    Join Date
    Apr 2012
    Location
    Chicago, IL
    Posts
    44
    Perhaps "trend" was poor language on my part, but personally the digis don't interest me yet. Maybe sometime in the future, but for now, the price is not on par with what I need out of my gauges. I actually have not seen anyone here in the entire Chicago area even using them. It wasn't until I started using Hvac-Talk that I realized how popular they've become.

  7. #20
    Join Date
    Sep 2005
    Location
    Atlanta GA area
    Posts
    21,176
    Quote Originally Posted by jw-lu597 View Post
    Perhaps "trend" was poor language on my part, but personally the digis don't interest me yet. Maybe sometime in the future, but for now, the price is not on par with what I need out of my gauges. I actually have not seen anyone here in the entire Chicago area even using them. It wasn't until I started using Hvac-Talk that I realized how popular they've become.
    Here is the reason I went digital back in 2007:

    I read here on H-talk analog gauges could be as much as 35# off right out of the box (new). I thought... no way... However I wanted to know... SOOO:

    I talked to the mgr at the local supply house; We took a jug of 410, and hooked up half a dozen new (right out of the box) gauge sets to it (varied brand and price). Guess what: The largest variance was, are you ready: over 40#... yes fourty pounds pressure difference between the highest and lowest.

    So how does one know if their gauge are accurate? If they are analog, they do not. If they are digital, and comes from someone that is OCD about quality... well maybe a little better.

    I got to thinking: I wonder how many degrees of SH or SC I would be off if my gauge set was 40# off... do the math... it is a significant amount.

    The test I did back in 2007 convinced me to go digital, and I have never looked back. I can say not one single person I have spoken to, that bought a digital, has regretted it.
    GA-HVAC-Tech

    Quality work at a fair price with excellent customer service!

    Romans Ch's 5-6-7-8

    2 Chronicles 7:14

  8. #21
    Join Date
    Apr 2012
    Location
    Chicago, IL
    Posts
    44
    I hate to turn this into a digital gauge thread, but has this same test been done with digital gauges? And also, was the jug of 410 kept at the exact same temperature with no loss of refrigerant the whole time? I'm not saying that digital gauges aren't more accurate (even that I don't know), but I have seen different sets of analog gauges used -- including my cheap YJ set -- on the same unit, same service visit, and the difference was marginal. A GOOD set of analogs should be in the range, certainly not 40# off. But I do see what you're saying, I'm just not sold on digitals. Just seems like a personal choice for the most part, just like any other tool.

  9. #22
    Join Date
    Jul 2009
    Location
    Columbia, MD
    Posts
    3,990
    i have this manifold. I did a mitsubishi evacuation with these a while ago. I found that the charging port was leaking into the vacuum port during a vacuum.

    anyone else had this problem?

  10. #23
    Join Date
    Mar 2007
    Location
    wedged in freezer shelf
    Posts
    6,749
    Bump.
    So it's been a year
    Are you still using these Reef?

  11. #24
    Quote Originally Posted by itsiceman View Post
    Bump.
    So it's been a year
    Are you still using these Reef?
    I fixed mine and happy as a pig in a public rest room.

  12. #25
    Join Date
    Sep 2002
    Posts
    720
    Quote Originally Posted by itsiceman View Post
    Bump.
    So it's been a year
    Are you still using these Reef?

    Yes I am and have been working good. I have had no issues with any of the valves leaking like gravity above stated.

  13. #26
    Referman,

    Where did you get the extra long manifold hook?

    Nice job converting your AK900 to fit the JB manifold. It looks so good that I thought that it was a stock setup. I was surprised when mine did not line up. That's what I get for not reading this thread more carefully.

    I am not sure that I want to modify mine. How did you get the sensors and the outside nut to lay flat over the slightly sloping portion of the bottom of the enclosure outside of the original holes? Is there a gap between the original holes and the outside nut?

    Bruce K

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