Auto-inflation

[Larry10625]

I have to ask, for clarity, which direction "backflow" is. Reservoir to Implant (inflate direction) or Implant to reservoir (deflate direction)?

How I interpret what you are saying is; with the valve in deflate mode, fluid is free to flow in either direction. With the valve in inflate mode, fluid is 100% locked out from flowing in the deflate direction and locked out from flowing in the inflate direction unless a threshold amount of pressure is put on the pump bulb.

I suppose, if pressure (over that threshold pressure) is put on the reservoir, inflation of the implant could take place without pumping, but that is unlikely to the point impossibility in most cases.

Have I got that right?

That is the way I understand it, yes.

Larry

Well, that is not how I would have built that valve.

I would have had the valve in deflate mode allow ONLY deflation (no two-way flow) and in inflate mode have it be a one-way valve with no threshold to overcome with the pump.

But I am not the hydraulic engineer for AMS, and I suppose they did it the way they did because it makes the valve 1) have a longer, more reliable service life, 2) be simpler, smaller and less expensive to build and 3) simple to operate (once you get accustomed to it).

Thanks for the comments, Larry. That helps a lot.

I said the same thing to Jamie. She said that what I do is a fix to a problem they discovered afterwards. If the button is not depressed straight down, backflow happens... I didn't think that little button was tall enough to press it anything other than STRAIGHT down.

Larry

[Lost Sheep]

I said the same thing to Jamie. She said that what I do is a fix to a problem they discovered afterwards. If the button is not depressed straight down, backflow happens... I didn't think that little button was tall enough to press it anything other than STRAIGHT down.

Larry

This is the first time I have ever heard of any off-axis pressure making a difference to the operation of the valve.

Any time a discussion comes up about valves behaving in unexpected ways, this should be pointed out as a possible factor.

[Larry10625]

I said the same thing to Jamie. She said that what I do is a fix to a problem they discovered afterwards. If the button is not depressed straight down, backflow happens... I didn't think that little button was tall enough to press it anything other than STRAIGHT down.

Larry

This is the first time I have ever heard of any off-axis pressure making a difference to the operation of the valve.

Any time a discussion comes up about valves behaving in unexpected ways, this should be pointed out as a possible factor.

I agree BUT I only have info on the AMS... I found this out by personal experience and then Jamie confirmed it. This was not designed like that but rather, was discovered as a fix later. As far as I know it just fixes the problem of the AMS behaving like a Titan with a semi all the time.

Larry