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Thread: How to repair emag regulator valve pin assembly?

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  1. #1

    How to repair emag regulator valve pin assembly?

    For those following this saga, I am now working on the valve. I have replaced all the bad o rings, but I have no idea what I replace on the regulator valve pin assembly.

    http://www.tunamart.com/index.php?c=39&p=115

    Where that white part is, on my gun there are three different discs, seemingly of different materials. They are all gummy and ruined.

    Is there a part I can pick up so I don't have to buy the whole thing? Seems kind of wasteful if I can't throw something on there.

  2. #2
    Join Date
    Jan 2002
    Location
    Halifax, N.S., Canada
    Posts
    7,235
    The two outside ones are urethane orings that come in the oring kit. The middle one is a plastic split washer that separates the orings.
    Except for the Automag in front, its usually the man behind the equipment that counts.

  3. #3
    Do you know what size those o rings are?

  4. #4
    Figure they're 006. I can either use butyl or viton. Going with butyl right now.

    The real question is how I remove that little ring at the back end of the assembly. I need to do that to take the washer off and put the first one on.

    BTW: Thank you athomas. My orings had melted into such a mess that even after messing with orings all day long, I didn't recognize these things as orings! The whole mess looked like some proprietary piece.

  5. #5
    Well, I got them on by squeezing the one over the washer with a pick and a toothpick.

    However, I still have a catastrophic leak from the reg vent hole. I've already replaced the sear piston o ring, and all the o rings on the regulator valve piston assembly.

  6. #6
    Does the leak stop if you back off the velocity? If so, your regulator piston assembly may need replacing.

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