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  1. #1
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    Ermeto Hydraulic fittings (6,8,10 + 12L)



    I have had several 12mm (12L) fittings fail recently.
    IE, An Oil leak develops releasing refrigerant with it.
    I always change the fitting for new.

    Has anyone had any success just re-tightening these up?
    Grizzly



  2. #2
    Brian_UK's Avatar
    Brian_UK is offline Moderator I am starting to push the Mods: of RE Site Moderator : and general nice guy
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    Re: Ermeto Hydraulic fittings (6,8,10 + 12L)

    Looking at the data sheet it seems that they can be undone and then remade but looking at the sectional detail I suppose a retighten might work.

    They state however that once done-up tight that it is a perfect leak free joint (yeah, right).

    http://www.lister.co.uk/Hydraulics/higheoeo2.pdf
    page 1
    Brian - Newton Abbot, Devon, UK
    Retired March 2015

  3. #3
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    Re: Ermeto Hydraulic fittings (6,8,10 + 12L)

    Hi Grizzly.
    I use alot of swageloc fitting etc., they stipulate that they be torqued up and backed off 1/4 of a turn. So me being me tighten till elbow clicks and back them off. Resealable disconnects the same process. Never had a problem. Don't know what the back off effect is but seems to work.

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    Re: Ermeto Hydraulic fittings (6,8,10 + 12L)

    Thanks guys.
    The one I checked yesterday (Had sprung a leak!) had an internal hairline fracture.
    So it was replaced.
    Grizzly

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    Re: Ermeto Hydraulic fittings (6,8,10 + 12L)

    Grizzly,
    VSD on screw compressor can cause fractures of tube, maybe thats what you have?
    Certain frequencies cause vibration & tube gets metal fatigue.

  6. #6
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    Re: Ermeto Hydraulic fittings (6,8,10 + 12L)

    Quote Originally Posted by RANGER1 View Post
    Grizzly,
    VSD on screw compressor can cause fractures of tube, maybe thats what you have?
    Certain frequencies cause vibration & tube gets metal fatigue.
    Your getting scary Sherlock!

    A SAB 163HR Rotatune with vibration resonance at 2 points, all sorted now.
    But thanks for the input.
    Grizzly

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