ADV schrader valve specs

**hoppyinca** · 27th January 2008, 03:07

anything special to look for when replacing the ADV schrader valve?
(pin travel/ material for body/ etc.)

I re-piped some stuff, testing for leaks and the schrader was leaking by. I procured 2 different ones from my local tire shop, but neither appears to be the same as the one I removed.

I am in the midst of googling for info; any and all help would be appreciated!

thanx

hoppy

teksimple · 27th January 2008, 05:58

Quote: (Originally Posted by hoppyinca)

anything special to look for when replacing the ADV schrader valve?
(pin travel/ material for body/ etc.)

I re-piped some stuff, testing for leaks and the schrader was leaking by. I procured 2 different ones from my local tire shop, but neither appears to be the same as the one I removed.

I am in the midst of googling for info; any and all help would be appreciated!

thanx

hoppy

Excuse me if I am referencing the obvious, but did you give your valve a good cleaning before considering replacing it? I mean, soaking it in vinegar for a while/and or ultrasonic cleaning? I was thinking calamitous replacement thoughts when my Schrader started leaking right before a dive last year. Charlie suggested cleaning it, and I was embarrassed that vinegar actually did the trick in just a few seconds.

**hoppyinca** · 27th January 2008, 16:46

Quote: (Originally Posted by teksimple)

...I was embarrassed that vinegar actually did the trick in just a few seconds...

I'll let you know if i'm embarrassed... I just thought it was a small inexpensive part so...

I will soak it and find out, thanks, didn't even cross my mind...

hoppy

**Dave Sutton** · 27th January 2008, 16:51

The actual part is the Schraeder out of a high pressure (3000 PSI) aircraft nitrogen fitting. It looks like a tire stem, but is stainless steel and of higher quality. It's not 'really' a tire stem.

Dave

.

**Dsix36** · 27th January 2008, 22:58

Quote: (Originally Posted by Dave Sutton)

The actual part is the Schraeder out of a high pressure (3000 PSI) aircraft nitrogen fitting. It looks like a tire stem, but is stainless steel and of higher quality. It's not 'really' a tire stem.

Dave

.

Damn Dave, is there anything that you don't know?

Just humbled by your knowlege and my lack of.

**Dave Sutton** · 28th January 2008, 00:23

<gag>....

The Schraeder thing was just serindipity: I had a box of nitrogen accumulator fittings in the hangar, unscrewed a stem, and said "Hm.... that looks like it would fit a Mark-15"....

It did.

F-86 parts and Mark-15 parts interchange. Go figure.

Dave

.

cool_hardware52 · 28th January 2008, 02:19

Schrader style valve cores are used in many applications. Refrigerant systems, aircraft landing gear struts etc.

There a variety of combinations of materials for fluid compatibility, operating pressure etc.

Schrader-Bridgeport Home

Tobin

Jimbob1 · 28th January 2008, 02:34

Does anybody know where a combination drill/reamer/tap would be available for the schrader valve seat or do the three seperate items need to be made up? Thanks

cool_hardware52 · 28th January 2008, 13:45

Quote: (Originally Posted by Jimbob1)

Does anybody know where a combination drill/reamer/tap would be available for the schrader valve seat or do the three seperate items need to be made up? Thanks

You will need a drill, porting tool and tap. I don't remember the specs right off the top of my head, but I might have them at the shop.

You might be able to get a step drill made that would replace the twist drill and porting tool.

I'd recommend checking with the valve core suppliers. These are specialty tools.

Tobin

**Dave Sutton** · 28th January 2008, 14:19

Quote: (Originally Posted by Jimbob1)

Does anybody know where a combination drill/reamer/tap would be available for the schrader valve seat or do the three seperate items need to be made up? Thanks

Are you making up a new add valve system from scratch, or fixing an existing one?

If you are fixing an existing one, you only need to polish the seat... not ream it.

If you are making up one from scratch, all of the components are off the shelf parts.

If you want to add a Schraeder to a solid block (valve body, etc), you can buy tubes that are threaded on the interior for the stem, and on the exterior for insertion into another component. We use these to make pneumatic speargun filler systems and when seated with epoxy into a solid block are good to any reasonable pressure.

Or, as before, you can buy a porting tool that does the diameter and the seat, and then tapping is a second machining operation.

Dave

.

27th January 2008, 03:07	#1 (permalink)
hoppyinca New Member Current Rebreather/s: MK 15.X Other Rebreather/s: Join Date: Jun 2005 Location: Laguna Niguel, CA USA Posts: 250	ADV schrader valve specs anything special to look for when replacing the ADV schrader valve? (pin travel/ material for body/ etc.) I re-piped some stuff, testing for leaks and the schrader was leaking by. I procured 2 different ones from my local tire shop, but neither appears to be the same as the one I removed. I am in the midst of googling for info; any and all help would be appreciated! thanx hoppy __________________ "The government is merely a servant... merely a temporary servant; it cannot be its prerogative to determine what is right and what is wrong, and decide who is a patriot and who isn't. Its function is to obey orders, not originate them..." - Mark Twain
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27th January 2008, 05:58	#2 (permalink)
teksimple Enlightened Alpinist Current Rebreather/s: Sport Kiss MK 15.X Other Rebreather/s: Classic Kiss Join Date: Apr 2005 Location: Back in Hawaii Posts: 480	Re: ADV schrader valve specs Quote: (Originally Posted by hoppyinca) anything special to look for when replacing the ADV schrader valve? (pin travel/ material for body/ etc.) I re-piped some stuff, testing for leaks and the schrader was leaking by. I procured 2 different ones from my local tire shop, but neither appears to be the same as the one I removed. I am in the midst of googling for info; any and all help would be appreciated! thanx hoppy Excuse me if I am referencing the obvious, but did you give your valve a good cleaning before considering replacing it? I mean, soaking it in vinegar for a while/and or ultrasonic cleaning? I was thinking calamitous replacement thoughts when my Schrader started leaking right before a dive last year. Charlie suggested cleaning it, and I was embarrassed that vinegar actually did the trick in just a few seconds. __________________ ---- _____________ "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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27th January 2008, 16:46	#3 (permalink)
hoppyinca New Member Current Rebreather/s: MK 15.X Other Rebreather/s: Join Date: Jun 2005 Location: Laguna Niguel, CA USA Posts: 250	Re: ADV schrader valve specs Quote: (Originally Posted by teksimple) ...I was embarrassed that vinegar actually did the trick in just a few seconds... I'll let you know if i'm embarrassed... I just thought it was a small inexpensive part so... I will soak it and find out, thanks, didn't even cross my mind... hoppy __________________ "The government is merely a servant... merely a temporary servant; it cannot be its prerogative to determine what is right and what is wrong, and decide who is a patriot and who isn't. Its function is to obey orders, not originate them..." - Mark Twain
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27th January 2008, 16:51	#4 (permalink)
Dave Sutton Living on Animal Farm 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: 2,512	Re: ADV schrader valve specs The actual part is the Schraeder out of a high pressure (3000 PSI) aircraft nitrogen fitting. It looks like a tire stem, but is stainless steel and of higher quality. It's not 'really' a tire stem. Dave . __________________ . "All animals are equal, but some animals are more equal than others" Professional Small Boy: Never Successfully Cubicled.
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27th January 2008, 22:58	#5 (permalink)
Dsix36 Going Down? Current Rebreather/s: Optima Other Rebreather/s: Join Date: Aug 2007 Location: Deerfield Beach, Florida Posts: 891	Re: ADV schrader valve specs Quote: (Originally Posted by Dave Sutton) The actual part is the Schraeder out of a high pressure (3000 PSI) aircraft nitrogen fitting. It looks like a tire stem, but is stainless steel and of higher quality. It's not 'really' a tire stem. Dave . Damn Dave, is there anything that you don't know? Just humbled by your knowlege and my lack of. __________________ THE MORE THAT I LEARN, THE MORE THAT I STILL NEED TO LEARN!!!!!!
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28th January 2008, 00:23	#6 (permalink)
Dave Sutton Living on Animal Farm 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: 2,512	Re: ADV schrader valve specs <gag>.... The Schraeder thing was just serindipity: I had a box of nitrogen accumulator fittings in the hangar, unscrewed a stem, and said "Hm.... that looks like it would fit a Mark-15".... It did. F-86 parts and Mark-15 parts interchange. Go figure. Dave . __________________ . "All animals are equal, but some animals are more equal than others" Professional Small Boy: Never Successfully Cubicled.
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28th January 2008, 02:19	#7 (permalink)
cool_hardware52 RebreatherWorld Sponsor Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Mar 2005 Location: SoCal USA Posts: 358	Re: ADV schrader valve specs Schrader style valve cores are used in many applications. Refrigerant systems, aircraft landing gear struts etc. There a variety of combinations of materials for fluid compatibility, operating pressure etc. Schrader-Bridgeport Home Tobin __________________ www.deepseasupply.com
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28th January 2008, 02:34	#8 (permalink)
Jimbob1 New Member Current Rebreather/s: Classic Kiss Dolphin Other Rebreather/s: Dolphin Join Date: Mar 2006 Location: Fla> USA Posts: 1	Re: ADV schrader valve specs Does anybody know where a combination drill/reamer/tap would be available for the schrader valve seat or do the three seperate items need to be made up? Thanks
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28th January 2008, 13:45	#9 (permalink)
cool_hardware52 RebreatherWorld Sponsor Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Mar 2005 Location: SoCal USA Posts: 358	Re: ADV schrader valve specs Quote: (Originally Posted by Jimbob1) Does anybody know where a combination drill/reamer/tap would be available for the schrader valve seat or do the three seperate items need to be made up? Thanks You will need a drill, porting tool and tap. I don't remember the specs right off the top of my head, but I might have them at the shop. You might be able to get a step drill made that would replace the twist drill and porting tool. I'd recommend checking with the valve core suppliers. These are specialty tools. Tobin __________________ www.deepseasupply.com
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28th January 2008, 14:19	#10 (permalink)
Dave Sutton Living on Animal Farm 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: 2,512	Re: ADV schrader valve specs Quote: (Originally Posted by Jimbob1) Does anybody know where a combination drill/reamer/tap would be available for the schrader valve seat or do the three seperate items need to be made up? Thanks Are you making up a new add valve system from scratch, or fixing an existing one? If you are fixing an existing one, you only need to polish the seat... not ream it. If you are making up one from scratch, all of the components are off the shelf parts. If you want to add a Schraeder to a solid block (valve body, etc), you can buy tubes that are threaded on the interior for the stem, and on the exterior for insertion into another component. We use these to make pneumatic speargun filler systems and when seated with epoxy into a solid block are good to any reasonable pressure. Or, as before, you can buy a porting tool that does the diameter and the seat, and then tapping is a second machining operation. Dave . __________________ . "All animals are equal, but some animals are more equal than others" Professional Small Boy: Never Successfully Cubicled. Last edited by Dave Sutton : 28th January 2008 at 14:24.
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