[Jrahn56]

Ok, I  will fill with my external compressor. If it doesn't get over 75psi I will change my PPV. If I don't find a leak during filling with external compressor.

[johnkosir]

   
    this is my bubbler it shows how much air is going through a line by the volume of bubbles
have a video of it working but don't know how to post it

[Richard]

OK, that is something I have not seen.

Let me be clear, if you can maintain 120 on the compressor and only 75 on the coach should you go after the PPV. I suspect with the leak you have you will not be able to maintain 120 on the compressor.

I have never seen black iron pipe used for the air system.

[Jrahn56]

Ok, thank you. I will keep you advised. Turning real cold here (El Paso) next week (20's) so working on it will be postponed awhile.

Thanks again for all of your wisdom.  I would be up a creek without a paddle.

Jeff