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Looking to create a scuba to schrader hose

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thomasg(at)infosysnetwork
Guest

Posted: Tue Apr 05, 2011 6:50 pm Post subject: Looking to create a scuba to schrader hose

I am looking to create a hose to go from a scuba tank to the Schrader valve on my CJ. 

Looking at gooseneck couplings, it seems that the high pressure ones don't have a center pin to depress the core valve. I am guessing that the air pressure itself depresses the valve?

Aircraft Spruce has one http://www.aircraftspruce.com/catalog/lgpages/gooseneck.php 

For the other end, I am looking for the Scuba Yoke Assembly. I have some old regulators that I may be able to take apart for this, but does anyone have any specifics on adapters that I may need? It looks like the Yoke diameter is definitely larger than the gooseneck diameter. 



Thanks,

Tommy

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viperdoc(at)mindspring.co
Guest

Posted: Tue Apr 05, 2011 7:11 pm Post subject: Looking to create a scuba to schrader hose

Tom,

You need the stage one from a scuba regulator. That will fit the yolk on the scuba tank. I have forgotten the size of the fittings you need for the high pressure line from the stage 1 to the screwed valve.

Doc



Sent from my iPad



On Apr 5, 2011, at 9:47 PM, Thomas Geoghegan <thomasg(at)infosysnetworks.com> wrote:



 	  Quote: 	
		   

 

 I am looking to create a hose to go from a scuba tank to the Schrader valve on my CJ. 

 Looking at gooseneck couplings, it seems that the high pressure ones don't have a center pin to depress the core valve. I am guessing that the air pressure itself depresses the valve?

 Aircraft Spruce has one http://www.aircraftspruce.com/catalog/lgpages/gooseneck.php 

 For the other end, I am looking for the Scuba Yoke Assembly. I have some old regulators that I may be able to take apart for this, but does anyone have any specifics on adapters that I may need? It looks like the Yoke diameter is definitely larger than the gooseneck diameter. 

 

 Thanks,

 Tommy

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dsavarese0812(at)bellsout
Guest

Posted: Wed Apr 06, 2011 3:20 am Post subject: Looking to create a scuba to schrader hose

This is the end for the Schrader valve.

http://www.aircraft-tool.com/shop/detail.aspx?PRODUCT_ID=SK2043C

Actually you should remove the valve core because it is very likely it 

is not a high pressure check valve to begin with.  Plus you don't need 

it since the system is already protected with check valves.

Dennis



On 4/5/2011 9:47 PM, Thomas Geoghegan wrote:

 	  Quote: 	
		   



 I am looking to create a hose to go from a scuba tank to the Schrader valve on my CJ.

 Looking at gooseneck couplings, it seems that the high pressure ones don't have a center pin to depress the core valve. I am guessing that the air pressure itself depresses the valve?

 Aircraft Spruce has one http://www.aircraftspruce.com/catalog/lgpages/gooseneck.php

 For the other end, I am looking for the Scuba Yoke Assembly. I have some old regulators that I may be able to take apart for this, but does anyone have any specifics on adapters that I may need? It looks like the Yoke diameter is definitely larger than the gooseneck diameter.



 Thanks,

 Tommy

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dsavarese0812(at)bellsout
Guest

Posted: Wed Apr 06, 2011 3:29 am Post subject: Looking to create a scuba to schrader hose

I meant to say, "it is not a high pressure valve core".

Dennis



On 4/6/2011 6:15 AM, A. Dennis Savarese wrote:

 	  Quote: 	
		   

 <dsavarese0812(at)bellsouth.net>



 This is the end for the Schrader valve.

 http://www.aircraft-tool.com/shop/detail.aspx?PRODUCT_ID=SK2043C

 Actually you should remove the valve core because it is very likely it

 is not a high pressure check valve to begin with. Plus you don't need it

 since the system is already protected with check valves.

 Dennis



 On 4/5/2011 9:47 PM, Thomas Geoghegan wrote:

> 

> Geoghegan<thomasg(at)infosysnetworks.com>

>

> I am looking to create a hose to go from a scuba tank to the Schrader

> valve on my CJ.

> Looking at gooseneck couplings, it seems that the high pressure ones

> don't have a center pin to depress the core valve. I am guessing that

> the air pressure itself depresses the valve?

> Aircraft Spruce has one

> http://www.aircraftspruce.com/catalog/lgpages/gooseneck.php

> For the other end, I am looking for the Scuba Yoke Assembly. I have

> some old regulators that I may be able to take apart for this, but

> does anyone have any specifics on adapters that I may need? It looks

> like the Yoke diameter is definitely larger than the gooseneck diameter.

>

> Thanks,

> Tommy

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thomasg(at)infosysnetwork
Guest

Posted: Wed Apr 06, 2011 7:22 am Post subject: Looking to create a scuba to schrader hose

Doc, 

Do I really need the stage 1 of the regulator or just a connection to the scuba yoke? I would think that I would be using the high pressure off the stage 1, for the low pressure is only about 130 psi. So if I'm using the high pressure port, then I should be able to remove the stage 1 and connect the hose directly to the tank. 

 

While I was typing this, I just got an email from Precision Avionics. They have this for $50. Looks like I can attach a hose to the end and then to a Schrader gooseneck. Thoughts?

 

[img]cid:image003.jpg(at)01CBF44B.E2CBC240[/img]

 

 

 

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William Halverson

Joined: 27 Feb 2010
Posts: 88

Posted: Wed Apr 06, 2011 7:34 am Post subject: Looking to create a scuba to schrader hose

All I use on my YAK-55 is the scuba yoke.



When you fill the bottle the pressure relief valve will prevent any damage due to over pressure.



With practice you can fill it up and not waste much scuba air at all.



William Halverson

YAK-55

N355YK



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gill.g(at)gpimail.com
Guest

Posted: Wed Apr 06, 2011 8:19 am Post subject: Looking to create a scuba to schrader hose

You should not have a valve core in your schrader fitting, the check valve

on the firewall serves the necessary check function.  I went to a scuba shop

and picked up a used yoke and had an 1/8th inch national pipe thread drilled

and tapped.  In all my cost for yoke, custom high pressure hose (4500 psi)

from a hydraulic shop and Schrader adapter was under $50.



Gill 



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thomasg(at)infosysnetwork
Guest

Posted: Wed Apr 06, 2011 9:11 am Post subject: Looking to create a scuba to schrader hose

Looking at it, you are correct, there is no valve core.

thanks



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