home made dsv

David Parker · 28th January 2008, 22:03

Quote: (Originally Posted by DanFountain)

Here's my version of the PVCBVDSV:

It's a 1" PVC ball valve, drilled axially to accept a 3/4" PVC pipe (thinwall!), heated and shaped to an oval to fit a standard mouthpiece. Valve body is bored out to fit the mushroom valves from an Interspiro quasi-AGA mask (included with the BioPak 240 "rebreather kit"). Is the 7/8" bore of this DSV too small, considering the rest of the loop is 1-1/8" and greater diameter? Probably, but then again, where is the smallest restriction in the loop? I'd guess it's the gap between your upper and lower incisors as you grip the mouthpiece. In-depth dive report to follow.

I'm almost afraid to show pics of my homebuilt BOV...

-Dan

This is Quality Its is just what I am looking for, you mentioned you got the mushroom valves from a Bio pack 240 ??? where can I get one of them from??

Cheers
Dave

seakrakken · 28th January 2008, 23:43

Hey David,
i boosted my valves from a couple of respirators that were gointg to be trashed. Specifically the 3M type. I've even seen a couple of MSA Dust masks that had usable valves in them. Hit home Despot again and go looking at the respirators and dust masks.

Tom Rose · 28th January 2008, 23:52

Quote: (Originally Posted by DanFountain)

The point has been made in other threads that sometimes the only difference between a homebuilder and a manufacturer is time.

Dr. Bob, Patrick Duffy, Tom Rose, even Bill Stone - none of these guys probably "invented" this use of the hardware store ball valve. Form follows function.

I certainly did not, but I have had a lot of fun making and diving them. Rob Bradish and I have actually devised an improved DSV we will publish sometime this year. It's disgustingly simple....

Tom

lof · 29th January 2008, 00:10

Quote: (Originally Posted by Packhorse)

Thread Hijack!!

Why is this? What is there to hide?

There is nothing to hide. You should read the rest of the site to understand it better. It is sponsored by Czech Navy (We will take you for a ride (TM)) after all.
I put it up many years ago when I started playing with rebreathers, we shared information then and had fun doing it.

Golem Rebreathers is my personal site (long dormnant) and has no affiliation with Golem Gear, Inc., uh, except the fact that I own both

DanFountain · 29th January 2008, 10:31

Quote: (Originally Posted by David Parker)

This is Quality Its is just what I am looking for, you mentioned you got the mushroom valves from a Bio pack 240 ??? where can I get one of them from??

Cheers
Dave

Thanks!

BioPak 240's show up on ebay every so often. Parts are available from:

Biomarine Inc.
456 Creamery Way
Exton, PA 19341
USA

Telephone: 800.378.2287
In Pennsylvania: 610.524.8800
Fax: 610.524.8807

If all you're looking for are the valves, take a look at http://www.biomarineinc.com/manuals/...240LWBench.pdf. Parts I'm using are 11,12, & 13 on page 56 & 57. I think these may be standard AGA parts? Maybe more easily available from an Interspiro dealer on your side of the pond?

-Dan

teksimple · 29th January 2008, 11:16

Quote: (Originally Posted by fireman)

Coffee...I peed in my pants

I am surprised how many people (including relatives) think that that site is actually run by religious people. It is a parody web site made to poke fun of religious fundamentalists. But you guys knew that, right?

undrh2o · 29th January 2008, 20:03

Quote: (Originally Posted by fireman)

Coffee...I peed in my pants

Funny site yes - but man a little scary when a "front runner" for leader of your country strongly believes he will get his own planet when he dies.

osiris · 3rd February 2008, 01:47

Quote: (Originally Posted by Packhorse)

And yet a great many have been made and displayed here.
The only thing that concerns me about a DIY DSV is that PVC is said to off gas nasty chemicals.

-----------------

.................except when the brown sticky stuff hits the whirling thingy.......Besides, you need a BOV not a DSV.

David Parker · 4th February 2008, 23:13

Has anyone tried to make a Kiss type version of the PVC ball valve ?? or does anyone have any thoughts???

streamway_explorer · 5th February 2008, 05:45

Quote: (Originally Posted by DanFountain)

The point has been made in other threads that sometimes the only difference between a homebuilder and a manufacturer is time. Here's an early homebuilder diving a one-off, self-built rebreather. Note the DSV.

Dr. Bob, Patrick Duffy, Tom Rose, even Bill Stone - none of these guys probably "invented" this use of the hardware store ball valve. Form follows function.

If you want to get your hands on the same one as Bill stone has in photo, link Georg Fischer LLC - Ball Valve Type 343 Vertical The reason Bill used this one is you dont need to drill a hole and use pvc glues to put extra piece for mouth piece.

here's a photo showing the mouth piece.
AARG

Ball Valve Type 343 Vertical

Description
Manual full port vertical, 3-way ball valve with both. True union permits radial installation or removal. L-port ball provides independent connection of inlets with outlet. Diverter ball provides interconnections of two inlets with outlet for mixing or interconnection of outlet for proprtional diverter operation.

Available in PVC and CPVC with solvent cement socket or threaded end connections.
PP and PVDF with metric fusion socket or threaded end connections
EPDM or FPM seals and PTFE ball seats
Handle can be used as a tool for seat adjustment
Screwed-in seat carrier has left-hand threads to prevent unscrewing when threaded valve is removed from the line
Seat back seal for automatic wear adjustment and consistent torque
Can be actuated after installation

28th January 2008, 22:03	#21 (permalink)
David Parker New Member Current Rebreather/s: Dolphin Home Build Other Rebreather/s: Not Bought Yet Dolphin Home Build Join Date: Jan 2006 Location: Essex Posts: 57	Re: home made dsv Quote: (Originally Posted by DanFountain) Here's my version of the PVCBVDSV: It's a 1" PVC ball valve, drilled axially to accept a 3/4" PVC pipe (thinwall!), heated and shaped to an oval to fit a standard mouthpiece. Valve body is bored out to fit the mushroom valves from an Interspiro quasi-AGA mask (included with the BioPak 240 "rebreather kit"). Is the 7/8" bore of this DSV too small, considering the rest of the loop is 1-1/8" and greater diameter? Probably, but then again, where is the smallest restriction in the loop? I'd guess it's the gap between your upper and lower incisors as you grip the mouthpiece. In-depth dive report to follow. I'm almost afraid to show pics of my homebuilt BOV... -Dan This is Quality Its is just what I am looking for, you mentioned you got the mushroom valves from a Bio pack 240 ??? where can I get one of them from?? Cheers Dave __________________ Fuzzy & Fat
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28th January 2008, 23:43	#22 (permalink)
seakrakken Bob in Dallas Current Rebreather/s: Home Build Other Rebreather/s: Home Build Join Date: Apr 2005 Location: USA Posts: 12	Re: home made dsv Hey David, i boosted my valves from a couple of respirators that were gointg to be trashed. Specifically the 3M type. I've even seen a couple of MSA Dust masks that had usable valves in them. Hit home Despot again and go looking at the respirators and dust masks.
(Offline)

28th January 2008, 23:52	#23 (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: 330	Re: home made dsv Quote: (Originally Posted by DanFountain) The point has been made in other threads that sometimes the only difference between a homebuilder and a manufacturer is time. Dr. Bob, Patrick Duffy, Tom Rose, even Bill Stone - none of these guys probably "invented" this use of the hardware store ball valve. Form follows function. I certainly did not, but I have had a lot of fun making and diving them. Rob Bradish and I have actually devised an improved DSV we will publish sometime this year. It's disgustingly simple.... 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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29th January 2008, 00:10	#24 (permalink)
lof RebreatherWorld Sponsor Current Rebreather/s: Megalodon Prism Topaz Sport Kiss Classic Kiss MK 15.X Other CCR RB80 / Clone Other SCR Home Build Other Rebreather/s: Other CCR RB80 / Clone Other SCR Home Build Join Date: Jun 2005 Location: USA Posts: 479	Re: home made dsv Quote: (Originally Posted by Packhorse) Thread Hijack!! Why is this? What is there to hide? There is nothing to hide. You should read the rest of the site to understand it better. It is sponsored by Czech Navy (We will take you for a ride (TM)) after all. I put it up many years ago when I started playing with rebreathers, we shared information then and had fun doing it. Golem Rebreathers is my personal site (long dormnant) and has no affiliation with Golem Gear, Inc., uh, except the fact that I own both __________________ Jakub Golem Gear ShopKeeper www.golemgear.com
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29th January 2008, 10:31	#25 (permalink)
DanFountain Custom Title Allowed! Current Rebreather/s: Home Build Other Rebreather/s: Home Build Join Date: Dec 2005 Location: Lake Superior Posts: 101	Re: home made dsv Quote: (Originally Posted by David Parker) This is Quality Its is just what I am looking for, you mentioned you got the mushroom valves from a Bio pack 240 ??? where can I get one of them from?? Cheers Dave Thanks! BioPak 240's show up on ebay every so often. Parts are available from: Biomarine Inc. 456 Creamery Way Exton, PA 19341 USA Telephone: 800.378.2287 In Pennsylvania: 610.524.8800 Fax: 610.524.8807 If all you're looking for are the valves, take a look at http://www.biomarineinc.com/manuals/...240LWBench.pdf. Parts I'm using are 11,12, & 13 on page 56 & 57. I think these may be standard AGA parts? Maybe more easily available from an Interspiro dealer on your side of the pond? -Dan __________________ Try not. Do - or do not. There is no try. -Yoda
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29th January 2008, 11:16	#26 (permalink)
teksimple Enlightened Alpinist Current Rebreather/s: Sport Kiss MK 15.X Other Rebreather/s: Sport Kiss Classic Kiss Join Date: Apr 2005 Location: Back in Hawaii Posts: 496	Re: home made dsv Quote: (Originally Posted by fireman) Coffee...I peed in my pants I am surprised how many people (including relatives) think that that site is actually run by religious people. It is a parody web site made to poke fun of religious fundamentalists. But you guys knew that, right? __________________ ---- _____________ "I don't know the percentage of the Internet that's valid, do you? Jesus, it's scary." - Hunter S. Thompson
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29th January 2008, 20:03	#27 (permalink)
undrh2o Veteran Noob Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Apr 2006 Location: Ottawa, Canada Posts: 192	Re: home made dsv Quote: (Originally Posted by fireman) Coffee...I peed in my pants Funny site yes - but man a little scary when a "front runner" for leader of your country strongly believes he will get his own planet when he dies.
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3rd February 2008, 01:47	#28 (permalink)
osiris Custom Title Allowed! Current Rebreather/s: Inspiration Classic Sport Kiss Home Build Other Rebreather/s: Home Build Join Date: Feb 2006 Location: Auckland Posts: 290	Re: home made dsv Quote: (Originally Posted by Packhorse) And yet a great many have been made and displayed here. The only thing that concerns me about a DIY DSV is that PVC is said to off gas nasty chemicals. ----------------- .................except when the brown sticky stuff hits the whirling thingy.......Besides, you need a BOV not a DSV.
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5th February 2008, 05:45	#30 (permalink)
streamway_explorer New Member Current Rebreather/s: MK 15.X Home Build Other Rebreather/s: Not Bought Yet Inspiration Classic Home Build Join Date: Aug 2007 Location: Australia Posts: 45	Re: home made dsv Quote: (Originally Posted by DanFountain) The point has been made in other threads that sometimes the only difference between a homebuilder and a manufacturer is time. Here's an early homebuilder diving a one-off, self-built rebreather. Note the DSV. Dr. Bob, Patrick Duffy, Tom Rose, even Bill Stone - none of these guys probably "invented" this use of the hardware store ball valve. Form follows function. If you want to get your hands on the same one as Bill stone has in photo, link Georg Fischer LLC - Ball Valve Type 343 Vertical The reason Bill used this one is you dont need to drill a hole and use pvc glues to put extra piece for mouth piece. here's a photo showing the mouth piece. AARG Ball Valve Type 343 Vertical Description Manual full port vertical, 3-way ball valve with both. True union permits radial installation or removal. L-port ball provides independent connection of inlets with outlet. Diverter ball provides interconnections of two inlets with outlet for mixing or interconnection of outlet for proprtional diverter operation. Available in PVC and CPVC with solvent cement socket or threaded end connections. PP and PVDF with metric fusion socket or threaded end connections EPDM or FPM seals and PTFE ball seats Handle can be used as a tool for seat adjustment Screwed-in seat carrier has left-hand threads to prevent unscrewing when threaded valve is removed from the line Seat back seal for automatic wear adjustment and consistent torque Can be actuated after installation __________________ Michael Collins www.trimixdivers.com Last edited by sadave : 9th March 2008 at 09:18. Reason: typo's
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