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Old 20 July 2015, 15:41   #1
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Tube & Relief Valve Pressures ?

Hi guys, I'm trying to find out at what pressure these relief valves open, and do they need any type of servicing / maintenance at all to prevent any over pressure from sunshine etc bursting a seam?

Also, what pressure should the tubes be inflated to on a 4.5m zodiac ?
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Old 20 July 2015, 16:55   #2
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Quote:
Originally Posted by HighlandR View Post
Hi guys, I'm trying to find out at what pressure these relief valves open, and do they need any type of servicing / maintenance at all to prevent any over pressure from sunshine etc bursting a seam?

Also, what pressure should the tubes be inflated to on a 4.5m zodiac ?
Mirada OPV...

It will start to open at a minimum 3.0 psi, range of 3.3-3.5 psi target.
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Old 20 July 2015, 17:56   #3
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Mine are PRV-7's. Think they'll go up to 7 psi though I'm supposed to keep my tubes at 3.0-3.5psi.

Inflation Systems| CIRCOR Aerospace
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Old 21 July 2015, 17:32   #4
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Thanks guys, never knew the name of the valves being Mirada! searched for ages trying to find an image of them but no luck!
Found this page for anyone who might want any details in future: http://www.miradaresearch.com/product/high-flow-threaded-anodized-aluminum/

Thanks again !
Ps. Do I need to service them at all or can I assume they will work ? They are fitted to a sib manufactured in 1999
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