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OBA question
Posted: Sun Jul 09, 2006 9:02 pm
by 360 scout
g'day just plumbing up a electric air compressor & old fire extinguish for a tank just wondering when the whole system is pressurised will the air leak back past the piston seals on the comp. or do i have to fit a one way valve.
what do the arb's have on their compressors used with the lockers is the compressor cylinder pressurised all the time??
The compressor's a chassis tech DC5000 supposed to be rated at 3.6cfm & 130 psi used on air suspensions/bags.
cheers Andrew
Re: OBA question
Posted: Mon Jul 10, 2006 9:47 am
by Damo
360 scout wrote:g'day just plumbing up a electric air compressor & old fire extinguish for a tank just wondering when the whole system is pressurised will the air leak back past the piston seals on the comp. or do i have to fit a one way valve.
what do the arb's have on their compressors used with the lockers is the compressor cylinder pressurised all the time??
The compressor's a chassis tech DC5000 supposed to be rated at 3.6cfm & 130 psi used on air suspensions/bags.
cheers Andrew
I think it would depend on the compressor. Any OBA setups I have seen detailed have put a check valve in after the compressor. Do you know what a check valve would cost you? I dunno, but I can't see them being that expensive. I'd be inclined to put one in.
Posted: Mon Jul 10, 2006 9:58 am
by bazzle
Fit high temp syn rubber line to compressor. At tank end use a one way valve away from the heat. ARB comp stays pressurised. Uses valve in cyl head.
Bazzle
Posted: Mon Jul 10, 2006 12:37 pm
by Ruffy
I used a gas lock off valve that is powered by the compressor power wire.
Posted: Mon Jul 10, 2006 1:01 pm
by currentlyoffline
Ruffy wrote:I used a gas lock off valve that is powered by the compressor power wire.
Awesome idea, but what do they cost ?
Posted: Mon Jul 10, 2006 5:28 pm
by gqtrol
i would be thinking about installing a pressure relief valve to that as well buddy you don't wont to blow any thing up that could cause catastrophic damage.look into it properly before you start fiddling around with compressed air especialy when your talking about a couple of hundred psi just my thoughts
GQTROL
Posted: Mon Jul 10, 2006 7:45 pm
by ISUZUROVER
In my system I have a metal one-way valve immediately after the compressor (valve is from the vacuum line of an old bluebird - $1 from a wrecker - most old jap cars have metal valves newer plastic - which is no good).
On the tank I have an adjustable safety valve - about $5 from tradetools. I also have an electrical pressure cutoff switch (same as used on an industrial compressor) - about $30 from tradetools.
Posted: Mon Jul 10, 2006 9:11 pm
by 360 scout
Ruffy wrote:I used a gas lock off valve that is powered by the compressor power wire.
yeh Iwas thinking about the same thing got a spare left over from my dual fuel set up .
was thinking the compressor might be air tight while it's new but prob start leaking later on.
Posted: Mon Jul 10, 2006 9:19 pm
by ISUZUROVER
360 scout wrote:Ruffy wrote:I used a gas lock off valve that is powered by the compressor power wire.
yeh Iwas thinking about the same thing got a spare left over from my dual fuel set up .
was thinking the compressor might be air tight while it's new but prob start leaking later on.
No - the compressors are never 100% tight - but the main problem is that you have high pressure on one side and atmospheric pressure on the other, so you can spin them backwards when shut off (without a one-way valve).