I was filling my Acecare 2.17L tank today with the Yong Heng Compressor and had the valve to tank o-ring fail. When I initially install the o-ring I had noticed it was a little too large in diameter for the recess in the tank opening. I either pinched it or did not tighten the valve down enough in my estimation to totally capture it in the recess. Besides ordering some proper sized o-rings might I use the Delrin like plastic washer I got with the valve I bought instead. By the way I measured the tank opening at 23.09mm diameter and 2.0mm deep. The existing o-rings has a cs of 3mm but were either 24mm to 24.5 mm OD. How much of a compression should I allow for proper OD size. I see The O-ring store has the o-rings in 3mm cs with ID's of 17.0mm, 17.5mm and 18.0mm which would you think the best sized to use so they would not squeeze out the recess upon tightening. Bill
Acecare CF Value O-ring Failure-Lets Talk
- Thread starter AirgunBill
- Start date
Hi Bill.
I would stick with the Oring over the plastic washer. The green one that you have looks fine. Use a smear of silicone grease and make sure that the two surfaces but together with no gap. At 300 bar an Oring can squeeze through a 10 thou slot. If your fill adaptor has a gauge on it, the one on the tank is redundant. You will need a plug or another gauge to stop up the end if you want to check your tank pressure.
I would stick with the Oring over the plastic washer. The green one that you have looks fine. Use a smear of silicone grease and make sure that the two surfaces but together with no gap. At 300 bar an Oring can squeeze through a 10 thou slot. If your fill adaptor has a gauge on it, the one on the tank is redundant. You will need a plug or another gauge to stop up the end if you want to check your tank pressure.
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Thanks Eaglebeak. I believe the first black o-ring I used was a little too large in diameter to be compressed and contained within the tank neck recess. The green one does fit much better. I still plan to order some spares in different sizes to make sure I have the best fit and that I can tighten down the valve with no gap to let the o-ring squeeze out as you said. By the way I do have a dead head as we call it to put in the fill line to check the tanks remaining pressure. Thanks for the advice it helps very much to settle my mind on the best way to proceed. Bill
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