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Unread 02-03-2016, 23:09
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Re: Pneumatic Regulators from Automation Direct

Quote:
Originally Posted by martin417 View Post
The whole point of my argument is to try to eliminate poorly written rules. If the GDC wants to make quick exhaust valves legal, then they should add quick exhaust valves to the list of allowed pneumatic parts, not add check valves and believe that teams will read that as quick exhaust valves.

They say they don't want teams to try to figure out the intent, only look at exactly what is written. Under a strict interpretation, the rules say quick exhaust valves are not legal, but a LRI says "I know they are legal, that's what they meant". How is a team supposed to know what they meant? Why not be clear in the first place?

Edit: removed incorrect statements

I don't mean to be a stickler or PITA, but it is very important for the rules to be explicit and clear, with no ambiguity.


As for the two valve types I mentioned, here are some data sheets

Flow control

shuttle valve
On that you and I are in complete agreement. I got all bumpers banded for a little while a couple years ago because of the mission to make properly written rules. Looking at the shuttle valve you mentioned if it's plumbed in a way that meets the rules for check valves, I would allow it and seek further guidance from HQ/Al on the specific situation. In this case anyone can Q&A and ask specifically if quick exhaust valves are considered check valves by the GDC. I believe that they are and have been instructed to enforce it in that manner, if I was using one on my robot I'd probably ask in the Q&A just to be sure and have proof in case another RI or LRI doesn't see it the same way.
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