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  1. #27
    Join Date
    Aug 2004
    Location
    North Richland Hills, Texas
    Posts
    14,915
    Quote Originally Posted by BigJon3475 View Post
    Everything is bigger in Texas
    According to recent studies, even our bellies.
    If more government is the answer, then it's a really stupid question.

  2. #28
    Join Date
    Dec 2002
    Location
    Houston,Tx.
    Posts
    16,008
    Quote Originally Posted by BigJon3475 View Post
    Everything is bigger in Texas

    Quote Originally Posted by mark beiser View Post
    According to recent studies, even our bellies.

    __________________________________________________ _______________________
    “Experience is a hard teacher because she gives the test first, the lesson afterwards". - Vernon Law

    "Never let success go to your head, and never let failure go to your heart". - Unknown

  3. #29
    Join Date
    Feb 2006
    Location
    Phoenix,AZ
    Posts
    2,891
    Quote Originally Posted by mark beiser View Post
    I use 4' hoses with a ball valve on the end, then another 10" hose screwed onto the ball valve. Each of my 3 hoses is a 3 piece assembly(long hose-ball valve-short hose). The short hoses with a ball valve permanently attached are not a good idea because you can't purge the air out of just the small hose if you keep pressure in your manifold like I do.
    I can't stand low loss fittings!

    When I disconnect from a system, I open both valves on my manifold briefly to clear any oil, and close the ball valve on the liquid side.
    I let the system pull all the liquid out of my hoses and manifold, then close the ball valve on the vapor side and disconnect my hoses. I only loose the little bit of refrigerant in the 10" hoses.
    This leaves my manifold and hoses under some pressure from the remaining vapor.

    The next time I hook up to a system, I connect my hoses, purge the air out of the 10" hoses and open the ball valves.

    I'm loosing less than an ounce of refrigerant from connecting and disconnecting to a system.


    Before I got a 2nd set of digital gauges, I used the same set for R-22 and R-410A.
    Before hooking up to a system with a different refrigerant than the last one I worked on, I would bleed my gauges and manifold down to 0psi, and hook up to the system, then purge my hoses and manifold with the new refrigerant. Still probably loosing less than an ounce of refrigerant.

    Now that I have 2 digital manifolds, I just use one for each refrigerant.
    I use that same method when dealing with commercial refrigeration, say a 7 oz critically charged cap tube refrigerator. On the bigger stuff I don't even worry about whats left in my hoses as I am more worried about the damn shrader core getting stuck and leaking.

  4. #30
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,168
    sapience, this is the Ask Our Pro's forum, and only Pro members that have been vetted by the AOPC may post advise here. Please apply to the AOPC today, thank you.

    You can find the rules for posting and qualifications here.


    Further infractions may result in loss of posting privileges.
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