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Unread 11-02-2015, 11:12
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Re: R07-100-RNEA regulator outlet pressure

That may be an artifact from the old days of pneumatics, and the manufacturer changed the spec afterwards? There are plenty of pneumatics with similar scenarios, and I think the only thing we can do is recommend modern alternatives, like you've done. I'm sure there are other parts & rules which are based upon what was available 8+ years ago. The GDC has done a great job modernizing the rules, and we as a community can continue to keep them on their toes .

For example, Festo makes some great 90 & 180-degree rotary pneumatics with an awesome form factor, but they're all only rated for 8 bars of pressure. I'm willing to bet it's 8 bars only because they rounded down from the actual safe value. This is 116 psi, therefore illegal in 2015. After Champs, I plan to write a letter to FIRST asking about the reasoning behind the number of 125 psi for all pneumatic parts. I bet it's because of this regulator you've listed - if it fails, then 110 psi goes to all parts downstream. Yet what if we were allowed to only store 105 or 110 psi of air for pneumatics - would that alleviate the safety concerns?