Guy Prevost
Well Known Member
Before we start, a few important notes.
1. You must clean all of these parts thoroughly with a water based, non flammable cleaner before attaching them to oxygen. The presence of any grease, lubricant, oil, etc can very easily start a fire. As soon as one of these easy to start items begin to burn, the metal (in the presence of pure oxygen) will start to burn too. This is not a fire you want in your cockpit!
2. If you do set yourself on fire using this info, it is not my fault. This is how I built mine. For all you know, I'm a complete moron.
OK. Disclaimers taken care of. I purchased a Roscoe Pediatric regulator and a couple of D sized Aluminum cylinders on Ebay. I looked long and hard for a medical regulator that had an NPT threaded output, but have not been able to find one. If someone does find one, please post the info!
The Roscoe has a hose barb output that attaches with a metric thread. I don't have a lathe, so I had to kludge my setup together. I removed the hose barb from the regulator and figured out what size metric thread it had.
I then bought a tap of the same size and a stainless steel metric bolt. I cut the end off of an NPT nipple and drilled and tapped the ID for the metric bolt.
I then cut the head off of the bolt and drilled a hole through the center. After a thorough cleaning, the bolt was threaded into the nipple with Teflon tape in order to make an adapter.
I used the rubber gasket that came with the barb fitting and attached the nipple to the regulator.
The last step was to add a T and a pair of oxygen safe dry break connectors from Mountain High.
I tested for leaks in a sink full of water.
I make it a point to always turn the bottle off for takeoff and landing. If the regulator and bottle are turned on, I like to always have at least one cannula attached as I don't want to risk a leak at the fittings. If a leak happens around a gasket it can create heat and that can lead to fire. Even though I don't have any leaks, the regulator was not designed to have a valve after it, so I keep a cannula attached if the gas is flowing.
1. You must clean all of these parts thoroughly with a water based, non flammable cleaner before attaching them to oxygen. The presence of any grease, lubricant, oil, etc can very easily start a fire. As soon as one of these easy to start items begin to burn, the metal (in the presence of pure oxygen) will start to burn too. This is not a fire you want in your cockpit!
2. If you do set yourself on fire using this info, it is not my fault. This is how I built mine. For all you know, I'm a complete moron.
OK. Disclaimers taken care of. I purchased a Roscoe Pediatric regulator and a couple of D sized Aluminum cylinders on Ebay. I looked long and hard for a medical regulator that had an NPT threaded output, but have not been able to find one. If someone does find one, please post the info!
The Roscoe has a hose barb output that attaches with a metric thread. I don't have a lathe, so I had to kludge my setup together. I removed the hose barb from the regulator and figured out what size metric thread it had.
I then bought a tap of the same size and a stainless steel metric bolt. I cut the end off of an NPT nipple and drilled and tapped the ID for the metric bolt.
I then cut the head off of the bolt and drilled a hole through the center. After a thorough cleaning, the bolt was threaded into the nipple with Teflon tape in order to make an adapter.
I used the rubber gasket that came with the barb fitting and attached the nipple to the regulator.
The last step was to add a T and a pair of oxygen safe dry break connectors from Mountain High.
I tested for leaks in a sink full of water.
I make it a point to always turn the bottle off for takeoff and landing. If the regulator and bottle are turned on, I like to always have at least one cannula attached as I don't want to risk a leak at the fittings. If a leak happens around a gasket it can create heat and that can lead to fire. Even though I don't have any leaks, the regulator was not designed to have a valve after it, so I keep a cannula attached if the gas is flowing.
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