Compressor for running my Booster

***schford*** · 10th March 2007, 09:23

Great job and thanks for feedback I am still mulling what to do - link doesnt work for me either.

4ster · 10th March 2007, 14:00

The link should be fixed now.

***schford*** · 10th March 2007, 15:30

Quote: (Originally Posted by 4ster)

Thanks Stuart, this thread got me thinking about using a small, portable compressor to power my booster. Based on other's experience (especially Tom's) I was able find one that performs well for me. (DEWALT D55146 : 200 PSI 4.5 Gallon Electric Wheeled Portable Compressor) I used it to do a couple of Nitrox fills today and I am really pleased how things worked out.

The key was recognizing that you really want the pressure of the drive gas to be at the booster's optimum pressure all the time. Looking at what was available for portable, oil-less compressors I found that there has been an evolution in some models toward higher operating pressure. The DeWalt runs up to 200psi cut out pressure. More importantly the cut in pressure is 165psi. Since my Jetsam booster is designed to run at 147psi (10 bar), that means that the pressure at the regulator can be set so that this is supplied all the time, with no cycling below the optimum drive pressure.

The compressor's flow is rated at 5.3 cfm at 90 psi. It turns out that matched to the Jetsam booster this works out to a 50% duty cycle , well within the compressor manufacturer's recommendations. I added a small oil/water seperator for my own peace of mind, it is reassuring to look at the glass bowl and see no water in its trap. A small 1/4 inch ball valve was added to the seperator to control the drive gas.

Now I can fill my little rebreather cylinders to my hearts content, not having to worry if there is enough drive gas around to do the job. Thanks all!

I found it on Amazon USA but they wont ship to me - that looks exactly wha tI need but can not find it in the UK

any idea how to get it.

Also have you a link to your oil/water sperator and ball valve.

Stuart

Mark Chase · 10th March 2007, 23:05

Quote: (Originally Posted by schford)

I found it on Amazon USA but they wont ship to me - that looks exactly wha tI need but can not find it in the UK

any idea how to get it.

Also have you a link to your oil/water sperator and ball valve.

Stuart

I found the smaller one in the UK (150psi) but whilst they get the 200Psi one for about £190 we have to pay £380 even for the small one

Bummer because i wanted a 110V one so I could use it for site work as well.

ATB

Mark Chase

4ster · 10th March 2007, 23:27

Quote: (Originally Posted by schford)

I found it on Amazon USA but they wont ship to me - that looks exactly wha tI need but can not find it in the UK

any idea how to get it.

Also have you a link to your oil/water sperator and ball valve.

Stuart

I would have no problem getting one and then shipping it to you. I suspect that a better solution for you would be to find a similar speced compressor in europe as parts and warranty might be an issue in the future. If you can't find one that works, let me know and we can work out the details.

The oil/water separator I purchased was a small one that I got at a local home hardware store in the air tool section. Looking around on the net, a comon filtering size was 5 micron for a wide price range of filters. When a filter has less than 5 micron it starts to get rediculously expensive, I found I could spend way more on the filter than I did on the compessor so I lowered my expectations regarding filtration. I think I have $40 into the seperator and plumbing bits. I just thought it was a good idea to have a filter just before the booster in case something untoward blows down the line.

Steve

Tom Rose · 11th March 2007, 02:21

Quote:

IThe oil/water separator I purchased was a small one that I got at a local home hardware store in the air tool section. Looking around on the net, a comon filtering size was 5 micron for a wide price range of filters.

Steve

Here is how to test your system. Blow air from your system onto a bright metal spoon or putty knife. Look for condensation or fogging. If there is none, that is a pretty good indication that the air is clean. Not perfect but a good indication.

Tom

***Beanie*** · 12th March 2007, 08:45

Airlines Products - air pipe, air valves, pneumatic cylinders, pcl couplings, nylon tubing, ...

bits and bobs
filters pipes tubing etc

babar · 12th March 2007, 20:46

When I was going through a similar search I started this thread http://www.rebreatherworld.com/rebre...pressor+haskel

I wound up getting the one that Mark (Diverklondike) suggested. I don't know how you might get it in UK but its this one: Craftsman 16778 25 gal. Air Compressor, 1.6 hp, Vertical Tank, 2-Stage Oil Free Pump at Sears.com

Cheers

Quote: (Originally Posted by schford)

I found it on Amazon USA but they wont ship to me - that looks exactly wha tI need but can not find it in the UK

any idea how to get it.

Also have you a link to your oil/water sperator and ball valve.

Stuart

Garethingham · 22nd March 2007, 11:47

Guys,

Have you thought about running an electric booster?

TC15C-TC30C
Gas Booster Ranges

It may save you the need to run two components, that of the booster and then a compressor, sort of defeats the purpose??

4ster · 24th March 2007, 03:08

Quote: (Originally Posted by Garethingham)

Guys,

Have you thought about running an electric booster?

TC15C-TC30C
Gas Booster Ranges

It may save you the need to run two components, that of the booster and then a compressor, sort of defeats the purpose??

Of course that would be more efficient, but then I would only own 1 tool instead of two!

But seriously, owning a travel booster and a compressor is flexable. The compressor is handy for a lot of things besides the booster.

10th March 2007, 09:23	#41 (permalink)
*schford* Despotic Overlord Current Rebreather/s: Megalodon Sport Kiss Other Rebreather/s: Join Date: Jan 2005 Location: London, UK Posts: 3,562	Re: Compressor for running my Booster Great job and thanks for feedback I am still mulling what to do - link doesnt work for me either. __________________ Bailout and Kit Management account for Murphy's Law The only bad question is one you did not ask and later wish you had. Use of Rebreather World is subject to the Rebreather World Terms & Conditions of Use
(Offline)

10th March 2007, 14:00	#42 (permalink)
4ster Steve Sprague Current Rebreather/s: rEvo Other Rebreather/s: rEvo Join Date: Mar 2006 Location: Arlington, Washington Posts: 294	Re: Compressor for running my Booster The link should be fixed now. __________________ Steve "My problem is that I have trouble reconciling my gross habits with my net income." Errol Flynn
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10th March 2007, 15:30	#43 (permalink)
*schford* Despotic Overlord Current Rebreather/s: Megalodon Sport Kiss Other Rebreather/s: Join Date: Jan 2005 Location: London, UK Posts: 3,562	Re: Compressor for running my Booster Quote: (Originally Posted by 4ster) Thanks Stuart, this thread got me thinking about using a small, portable compressor to power my booster. Based on other's experience (especially Tom's) I was able find one that performs well for me. (DEWALT D55146 : 200 PSI 4.5 Gallon Electric Wheeled Portable Compressor) I used it to do a couple of Nitrox fills today and I am really pleased how things worked out. The key was recognizing that you really want the pressure of the drive gas to be at the booster's optimum pressure all the time. Looking at what was available for portable, oil-less compressors I found that there has been an evolution in some models toward higher operating pressure. The DeWalt runs up to 200psi cut out pressure. More importantly the cut in pressure is 165psi. Since my Jetsam booster is designed to run at 147psi (10 bar), that means that the pressure at the regulator can be set so that this is supplied all the time, with no cycling below the optimum drive pressure. The compressor's flow is rated at 5.3 cfm at 90 psi. It turns out that matched to the Jetsam booster this works out to a 50% duty cycle , well within the compressor manufacturer's recommendations. I added a small oil/water seperator for my own peace of mind, it is reassuring to look at the glass bowl and see no water in its trap. A small 1/4 inch ball valve was added to the seperator to control the drive gas. Now I can fill my little rebreather cylinders to my hearts content, not having to worry if there is enough drive gas around to do the job. Thanks all! I found it on Amazon USA but they wont ship to me - that looks exactly wha tI need but can not find it in the UK any idea how to get it. Also have you a link to your oil/water sperator and ball valve. Stuart __________________ Bailout and Kit Management account for Murphy's Law The only bad question is one you did not ask and later wish you had. Use of Rebreather World is subject to the Rebreather World Terms & Conditions of Use
(Offline)

10th March 2007, 23:05	#44 (permalink)
Mark Chase I go down for ages Current Rebreather/s: Classic Kiss Other Rebreather/s: Inspiration Classic Join Date: Jan 2005 Location: Kent Posts: 2,700	Re: Compressor for running my Booster Quote: (Originally Posted by schford) I found it on Amazon USA but they wont ship to me - that looks exactly wha tI need but can not find it in the UK any idea how to get it. Also have you a link to your oil/water sperator and ball valve. Stuart I found the smaller one in the UK (150psi) but whilst they get the 200Psi one for about £190 we have to pay £380 even for the small one Bummer because i wanted a 110V one so I could use it for site work as well. ATB Mark Chase __________________ Is it supposed to make that noise ? I took my unit to the dive shop and demanded they bolt on every thing that would fit. Join my elite diving teem and get a Tshirt "Doing It Chasey"Hammerhead Eccr Advanced Diving System
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10th March 2007, 23:27	#45 (permalink)
4ster Steve Sprague Current Rebreather/s: rEvo Other Rebreather/s: rEvo Join Date: Mar 2006 Location: Arlington, Washington Posts: 294	Re: Compressor for running my Booster Quote: (Originally Posted by schford) I found it on Amazon USA but they wont ship to me - that looks exactly wha tI need but can not find it in the UK any idea how to get it. Also have you a link to your oil/water sperator and ball valve. Stuart I would have no problem getting one and then shipping it to you. I suspect that a better solution for you would be to find a similar speced compressor in europe as parts and warranty might be an issue in the future. If you can't find one that works, let me know and we can work out the details. The oil/water separator I purchased was a small one that I got at a local home hardware store in the air tool section. Looking around on the net, a comon filtering size was 5 micron for a wide price range of filters. When a filter has less than 5 micron it starts to get rediculously expensive, I found I could spend way more on the filter than I did on the compessor so I lowered my expectations regarding filtration. I think I have $40 into the seperator and plumbing bits. I just thought it was a good idea to have a filter just before the booster in case something untoward blows down the line. Steve __________________ Steve "My problem is that I have trouble reconciling my gross habits with my net income." Errol Flynn
(Offline)

11th March 2007, 02:21	#46 (permalink)
Tom Rose Still Learning Current Rebreather/s: Other CCR Home Build Other Rebreather/s: Prism Topaz Other CCR Home Build Join Date: Oct 2005 Location: USA,North Carolina Posts: 328	Re: Compressor for running my Booster Quote: IThe oil/water separator I purchased was a small one that I got at a local home hardware store in the air tool section. Looking around on the net, a comon filtering size was 5 micron for a wide price range of filters. Steve Here is how to test your system. Blow air from your system onto a bright metal spoon or putty knife. Look for condensation or fogging. If there is none, that is a pretty good indication that the air is clean. Not perfect but a good indication. Tom __________________ The 50-50-90 rule: Anytime I have a 50-50 chance of getting something right, there's a 90% probability I'll get it wrong the first time. www.atlimp.com
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12th March 2007, 08:45	#47 (permalink)
*Beanie* give a man an inch....... Current Rebreather/s: Inspiration Classic Other Rebreather/s: Inspiration Vision Join Date: Jan 2005 Location: In da house! yeah baby! Posts: 3,175	Re: Compressor for running my Booster Airlines Products - air pipe, air valves, pneumatic cylinders, pcl couplings, nylon tubing, ... bits and bobs filters pipes tubing etc __________________ Beanie Gallery Admin & Library Assistant. www.outlawdivers.org.uk www.beandiving.co.uk www.beanengineering.co.uk
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12th March 2007, 20:46	#48 (permalink)
babar Curmudgeon Current Rebreather/s: Evolution Sport Kiss Other CCR Other Rebreather/s: Inspiration Classic Inspiration Vision Evolution Other CCR Join Date: Apr 2005 Location: Southern California Posts: 417	Re: Compressor for running my Booster When I was going through a similar search I started this thread http://www.rebreatherworld.com/rebre...pressor+haskel I wound up getting the one that Mark (Diverklondike) suggested. I don't know how you might get it in UK but its this one: Craftsman 16778 25 gal. Air Compressor, 1.6 hp, Vertical Tank, 2-Stage Oil Free Pump at Sears.com Cheers Quote: (Originally Posted by schford) I found it on Amazon USA but they wont ship to me - that looks exactly wha tI need but can not find it in the UK any idea how to get it. Also have you a link to your oil/water sperator and ball valve. Stuart __________________ Babar Evolution Plus Sport kiss
(Offline)

22nd March 2007, 11:47	#49 (permalink)
Garethingham New Member Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Mar 2007 Location: Sydney, Australia Posts: 1	Re: Compressor for running my Booster Guys, Have you thought about running an electric booster? TC15C-TC30C Gas Booster Ranges It may save you the need to run two components, that of the booster and then a compressor, sort of defeats the purpose??
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24th March 2007, 03:08	#50 (permalink)
4ster Steve Sprague Current Rebreather/s: rEvo Other Rebreather/s: rEvo Join Date: Mar 2006 Location: Arlington, Washington Posts: 294	Re: Compressor for running my Booster Quote: (Originally Posted by Garethingham) Guys, Have you thought about running an electric booster? TC15C-TC30C Gas Booster Ranges It may save you the need to run two components, that of the booster and then a compressor, sort of defeats the purpose?? Of course that would be more efficient, but then I would only own 1 tool instead of two! But seriously, owning a travel booster and a compressor is flexable. The compressor is handy for a lot of things besides the booster. __________________ Steve "My problem is that I have trouble reconciling my gross habits with my net income." Errol Flynn
(Offline)

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