luis wrote: ↑Fri May 27, 2022 11:50 amI agree with what has been said.
Once you have it out, you want to inspect the O-rings and if they look OK, just make sure to grease them with good silicone grease. DO NOT use any of the Oxygen compatible grease or any other type grease. Only use plain good quality silicone grease (it often says food appliance compatible).
I don't see a problem with that.scrane wrote: ↑Thu Jun 02, 2022 8:05 pmI always have a problem arm wrestling the DSV when I want to change its position. The last time I took it apart I smeared a film of silicone grease on the inside of the outer housing where the square o-ring slides when rotated. I also grease the two other o-rings pretty liberally. Now the DSV rotates pretty smoothly when firm but not Herculean twist is applied. I dive in a sand free environment. Is there anything wrong with this approach?
Thanks Luis,luis wrote: ↑Sun May 29, 2022 10:56 am
Here are a few links to Silicone grease.
This is Dow Corning 111, one of the preferred silicone greases:
https://smile.amazon.com/Corning-111-Si ... 67&sr=8-16
Here is Food Grade Pure Silicone Grease, from Trident.
https://smile.amazon.com/Trident-Silico ... 67&sr=8-27
https://smile.amazon.com/Scuba-Choice-S ... 767&sr=8-8
Silicone grease is perfectly safe and acceptable, with high concentration O2 mixtures, in low pressure applications (like the second stage).
It is absolutely not an issue at ambient pressure, like the case of the DSV mouthpiece.
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