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1/4" Pressure Relief Valve

General Tech Talk

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Posts: 1423
Joined: Thu May 26, 2005 7:00 pm
Location: Central Coast, NSW

1/4" Pressure Relief Valve

Post by klrevo »

hey guys and girls,

just wondering if anyone out there runs a relief/saftey valve on their air tanks???

want to run one of the tanks manifold incase pressure switch fails or the compressor just keeps pumping.

Pirtek have a few around the $20 mark, but theyre either 150 or 160 psi, was rathering something around 110-120 psi....

anyone run one? know where i can get one?

thanks for the help

dean ;)
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RAY185
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Post by RAY185 »

All the ones I've seen are about 150-160. I've got one on mine. Any reason you want 110-120? What is your pressure switch cutting out at?
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pressure valve

Post by klrevo »

yeh im thinking just grabbing the 150-160 psi ones. Pressure switch is the arb style from hobzee, on @ 70psi, off @ 100psi. I just figured there isnt a need to go any higher than 110, and if something did fail atleast i could possibly still use lockers at 110psi, but have no chance at 150/160psi...

thats all i was thinking.

iv got one of the 150psi ones on order i was checking to see what others have, as i havent paid anything yet.

dean ;)
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Post by -Scott- »

In my last job we wanted a pressure relief valve in the 8-9 bar range. The best we could find was 11bar, which was quick and easy to adjust. ;)
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relief

Post by klrevo »

yeh scott,

the one i got is from pirtek, and its a 1/4" BSP 11 bar preset. Pretty sure 11 bar works out to be about 159psi or something, and then im not totally sure, but im pretty sure they work like the staun deflators, and ill be able to wind it out a little to adjust it. Pretty sure thats the way it will work,

dean ;)
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Post by baddboy »

11 bar is 161.7 psi.
1 bar = 14.7 psi or 1 atmosphere.
I guess you can work it out from there!
75 series ute. 8 inch lift, Drop shackles, Shock hoops, ladder bar, Ubolt flip, 3 inch wheel spacers, intercooled turbo, winch, twin detroits, 35" Mtr's, etc, etc.
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Posts: 1423
Joined: Thu May 26, 2005 7:00 pm
Location: Central Coast, NSW

pressure

Post by klrevo »

yeh i rounded it to 14.5 for one bar. therefore 159.5 psi, but yeh close enough good enough, im pretty sure theyre adjustable anyways, so i should be able to wind it out and callobrate it somewhere near where i want it.

dean ;)
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Post by red90 »

1 bar = 14.5038 psi

14.7 psi is 1 atmosphere which is a different pressure.......
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Posts: 1423
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psi

Post by klrevo »

red90 wrote:1 bar = 14.5038 psi

14.7 psi is 1 atmosphere which is a different pressure.......
so i wasnt that far off then :D uni sure is paying off :armsup:

dean ;)
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Post by ISUZUROVER »

I bought a 1/4 adjustable relief valve from tradetools when I did mine. It was set at 150 or 160 from the factory, but it is juat a turn of the spanner/screwdriver to adjust. AFAIK all the standard ones are like this???
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Posts: 1423
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valve

Post by klrevo »

yeh pretty sure thats what i got coming, just checkign what else was out there. I had one ordered for 110psi, but they were waiting till they had $500 worth of orders then the shipping would be free. Trouble is the company they order off, thats all they order from them, relief valves and those little air blower things. Wouldve taken like 6 months to get it. This one i got coming should be adjustable,

dean ;)
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