Boosters

[Remco]

i never seen one working, can't you run it on a old first stage on a dive cylinder?
It only have to do the last part , not the whole filling.

[SoggyBottoms]

now that's a very good idea if you were desperate to squeeze in that little bit more; but I generally stop at 230 to cool to 220 to look after the tins. More often it's just 220 for 210ish to save the noise.
I find they work wonderfully from a bank but I only have a 10bar workshop compressor that is being ravaged by driving the booster.
I can't find a good affordable oil free in the UK


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[matt]

Quote: (Originally Posted by Remco)

i never seen one working, can't you run it on a old first stage on a dive cylinder?
It only have to do the last part , not the whole filling.

Of course. In fact I sometimes do - especially at the start of the season when I want 250 final - I pump all to 250 hot with the air-tools and then the next day top back to 250 with a 7L of drive for the last 20 bar.

Sometimes I do do the whole filling - especially after service.

Matt.

[matt]

Quote: (Originally Posted by SoggyBottoms)

now that's a very good idea if you were desperate to squeeze in that little bit more; but I generally stop at 230 to cool to 220 to look after the tins. More often it's just 220 for 210ish to save the noise.
I find they work wonderfully from a bank but I only have a 10bar workshop compressor that is being ravaged by driving the booster.
I can't find a good affordable oil free in the UK


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Do you have the same oil lubricated pump I have? My air tools was £35 from Aldi (Wolf made) and has been running fine since 2007.

Matt.

[SoggyBottoms]

Quote: (Originally Posted by matthewoutram)

Do you have the same oil lubricated pump I have? My air tools was £35 from Aldi (Wolf made) and has been running fine since 2007.

Matt.

no I have one of these bags of shite Sealey SAC05020 50L 2Hp/1.5Kw Belt Driven Air Compressor Oil Free - Sealey available at Toolbox
according to the numbers it should be fine; but it's crap
so if anyone knows of a good reliable oil free that does deliver 10bar and CAN drive this DTB5C - Diving Gas booster - air driven - to 250 bar pressure

or am I making a rod for my own back by trying for oil free when the drive gas is isolated from the boosted?

[nickb]

I have 3 old 30l half-Js and keep them full of air for top-offs and driving my Mini Sport Haskel. Blows to 260 before the OPV in the booster kicks-in. My 3l tins are 250 bar dumpies so I always fill them right up.

[matt]

Quote: (Originally Posted by SoggyBottoms)

no I have one of these bags of shite Sealey SAC05020 50L 2Hp/1.5Kw Belt Driven Air Compressor Oil Free - Sealey available at Toolbox
according to the numbers it should be fine; but it's crap
so if anyone knows of a good reliable oil free that does deliver 10bar and CAN drive this DTB5C - Diving Gas booster - air driven - to 250 bar pressure

or am I making a rod for my own back by trying for oil free when the drive gas is isolated from the boosted?

We're cross-purposes, Charlie: My pump is oil lubricating (has an oiler) so no need for the oil free (and anyway oil free pumps are not clean, they still leak oil, just less of it).

I wouldn't use one at all on any of the other pumps, though (unless the manufacturer says it is totally separated).

If I were buying again I'd look for 10 bar, or I might botch the OPV on this one one day ;-)

Matt.

[RichClark]

Quote: (Originally Posted by Peter L)

That's the ROB set as sold under expedition dive UK and made by Maximator...

I actually have one of these for sale, complete with whips and 1/2 J's

[humpbackdiving]

Quote: (Originally Posted by RichClark)

I actually have one of these for sale, complete with whips and 1/2 J's

can you pm me your mobile number and will give you a shgout tomorrow?
thks
greg

[Garspeed]

I have 10 bar, 25 litre, 7cfm oil free compressor for sale if anyone is interested. Drives booster to 200bar all day and 230bar on good day but noisy to run