Russian booster advice sought: KN-3B

montyg · 24th January 2008, 12:44

Hi everyone

We're looking at buying a russian booster mainly for boosting helium but it would be nice if we could boost oxygen once in a while.

The plaque on the booster says KN-3M which is supposed to be a manual machine AFAIK but this one's got a 220 volts single phase electric motor and if it's a conversion which was done after the fact it was done very well.

It looks completely different from the boosters on Dave Sutton's website in terms of the orientation of the cylinders. On Dave's website both the KN-3 and the KN-4 have horisontally mounted opposing cylinders (like a boxer engine) whereas this KN-3M has two vertical cylinders side by side.

Is anybody familiar with the capabilities, maintenance and spares of this machine?

Any advice much appreciated.

Regards
Monty

Rob Jones · 25th January 2008, 09:22

Hi Monty,

Good to see another supporter of the ex-Soviet booster regime!

We have a KD-5 model (yours is a KD-3, not KN - Cyrillic alphabet

).

Take a look at our post, http://www.rebreatherworld.com/compr...s-booster.html.

Maintenance is straightforward. We needed some new HP lines, but tubing standard st/stl, and an engineer can braze the connections. We got new leather seals made from a UK company, Ashton Seals, The Ashton Group - Sheffield, UK. They cost around GBP70 for 2 sets. They'll also supply the large 'O' rings for the barrels, too.

Other than that, ours did not need any new parts - they're pretty bomb-proof (probably for good reason!), and a good engineer could probably make any spares needed.

Please drop us a line at: info@divetekcyprus.com for any info / advice / booster story-swapping!

Hope that helps, Monty, please stay in touch and keep us updated.

**Dave Sutton** · 25th January 2008, 13:41

I have several overhaul parts /tool sets for these, each with multiple sets of leather seals, so if anyone needs seals.... yell.

Monty: Need your address again... PM me.

Dave

25th January 2008, 09:22	#2 (permalink)
Rob Jones Dive-Tek Cyprus Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Mar 2005 Location: Cyprus Posts: 29	Re: Russian booster advice sought: KN-3B Hi Monty, Good to see another supporter of the ex-Soviet booster regime! We have a KD-5 model (yours is a KD-3, not KN - Cyrillic alphabet). Take a look at our post, http://www.rebreatherworld.com/compr...s-booster.html. Maintenance is straightforward. We needed some new HP lines, but tubing standard st/stl, and an engineer can braze the connections. We got new leather seals made from a UK company, Ashton Seals, The Ashton Group - Sheffield, UK. They cost around GBP70 for 2 sets. They'll also supply the large 'O' rings for the barrels, too. Other than that, ours did not need any new parts - they're pretty bomb-proof (probably for good reason!), and a good engineer could probably make any spares needed. Please drop us a line at: info@divetekcyprus.com for any info / advice / booster story-swapping! Hope that helps, Monty, please stay in touch and keep us updated. __________________ Rob Jones Tel: + 357 99 110249 e-mail: info@divetekcyprus.com www.divetekcyprus.com Last edited by Rob Jones : 25th January 2008 at 09:23. Reason: spelling!
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25th January 2008, 13:41	#3 (permalink)
Dave Sutton Diveshop of Horrors Current Rebreather/s: Sport Kiss MK 15.X rEvo Other CCR Azimuth Home Build Other Rebreather/s: Classic Kiss rEvo Other CCR Azimuth Home Build Join Date: Jun 2006 Location: Narragansett, Rhode Island and Hackettstown, New Jersey Posts: 2,689	Re: Russian booster advice sought: KN-3B I have several overhaul parts /tool sets for these, each with multiple sets of leather seals, so if anyone needs seals.... yell. Monty: Need your address again... PM me. Dave __________________ "Changes in Lattitudes, Changes in Attitudes, Nothing remains quite the same".... www.nobubblediving.com
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