Oxygen hose check valve

[Hurricane]

For years i have been running my cpap machine with a T connector which my oxygen machine at night feeds into the cpap hose coming out of the cpap machine, question is do I need the check valve to stop pressure from my cpap going to the oxygen machine, my first sleep study said I needed Two liters of oxygen at night, last sleep study didn't state need of oxygen ,but I'm still using it, my oxygen levels day time are normal without oxygen, just use it at night.
Ed

[palerider]

For years i have been running my cpap machine with a T connector which my oxygen machine at night feeds into the cpap hose coming out of the cpap machine, question is do I need the check valve to stop pressure from my cpap going to the oxygen machine, my first sleep study said I needed Two liters of oxygen at night, last sleep study didn't state need of oxygen ,but I'm still using it, my oxygen levels day time are normal without oxygen, just use it at night.
Ed

no.

think about it. a check valve would only prevent backflow, if the pressure was so high in the cpap, then there'd be no flow of o2.

and if the ball on the concentrator flow gauge is floating, then o2 is flowing.

[Hurricane]

Thanks Palerider, been using it years that way, again thanks.
Ed

[Goofproof]

In reality the O2 check valve is meant to prevent O2 back flow into the machine when the XPAP isn't running, to prevent fire.

As long as you prevent the O2 from going backwards into the XPAP, when the XPAP is off, all is Ok! My compressor is in another room, I remove the O2 line from the adaptor, BEFORE I shut off the XPAP, then turn off the XPAP.

If you use the good valve, the check valve seals the XPAP machine from the O2, and the O2 is vent to the room. Many of the O2 check valves are too cheap to do the job my first one was correct, it's now lost, so I use a ported adapter. Jim

[palerider]

Thanks Palerider, been using it years that way, again thanks.
Ed

also, I'm pretty sure that the o2 is a much higher pressure than the cpap air... though I haven't stuck the o2 line in a tall water glass to see how far down it'd still bubble.

[Goofproof]

Thanks Palerider, been using it years that way, again thanks.
Ed

also, I'm pretty sure that the o2 is a much higher pressure than the cpap air... though I haven't stuck the o2 line in a tall water glass to see how far down it'd still bubble.

Yes, the O2 is at a higher pressure than XPAP. The correct way to set the O2, is put the mask on, turn the XPAP on to treatment pressure not ramp pressure, then adjust the O2 flow to the script or where you want it. Mine is 2 lpm, I set mine to 3 lpm, due to the added mask washout from venting. Jim

[Hurricane]

Hey Goofproof been a long time saying hello, my oxy. mach also is in a separate room, also set a 2 lt, what I have been doing is when its time for sleep I turn oxygen machine on, mask up, then turn cpap on. Morning I reverse procedure.
Ed

[Goofproof]

Hey Goofproof been a long time saying hello, my oxy. mach also is in a separate room, also set a 2 lt, what I have been doing is when its time for sleep I turn oxygen machine on, mask up, then turn cpap on. Morning I reverse procedure.
Ed

Make sure to adjust the flow, after the xpap is running at treatment pressure with the mask on. I imagine many have been set up with the flow at room pressure. Jim Once set it doesn't need to be changed every nite.

[archangle]

Some people have said this valve does what you need. I understand the idea, but am not 100% sure.

https://www.cpap.com/productpage/respir ... chine.html
http://www.cpap-supply.com/CPAP-Pressur ... 302418.htm

This thing is supposed to keep oxygen from going back into the machine. You put it on the output of the humidifier or machine and then connect the hose to that.

I think it works like this: When CPAP pressure is on, the pressure pushes a flapper valve open for CPAP air, and closed to outside air. When CPAP pressure is off, it opens the hose to outside air and (maybe) blocks off the port connected to the machine. i.e. it disconnects the hose from the CPAP machine and connects it to the outside air when the pressure is off.

Note that the cpap.com description says it won't work with integrated humidifier. I think this is in terms of it's function of keeping water from the humidifier out of the blower unit. It would probably still do the oxygen function.

It would also block the electrical connection for a heated hose.

I've never held one of these things in my hand or seen a good enough description to be sure this is how it works. I haven't been curious enough to buy one just to find out.

[palerider]

Some people have said this valve does what you need. I understand the idea, but am not 100% sure.

1) you've got the requirements backwards... he was concerned about blowback from the cpap into the concentrator, not oxygen backflowing into the cpap, your suggestion is a solution to a problem that the OP doesn't have.
2) he's already got a satisfactory answer.

[poppi2]

Some people have said this valve does what you need. I understand the idea, but am not 100% sure.

https://www.cpap.com/productpage/respir ... chine.html
http://www.cpap-supply.com/CPAP-Pressur ... 302418.htm

This thing is supposed to keep oxygen from going back into the machine. You put it on the output of the humidifier or machine and then connect the hose to that.

I think it works like this: When CPAP pressure is on, the pressure pushes a flapper valve open for CPAP air, and closed to outside air. When CPAP pressure is off, it opens the hose to outside air and (maybe) blocks off the port connected to the machine. i.e. it disconnects the hose from the CPAP machine and connects it to the outside air when the pressure is off.

Note that the cpap.com description says it won't work with integrated humidifier. I think this is in terms of it's function of keeping water from the humidifier out of the blower unit. It would probably still do the oxygen function.

It would also block the electrical connection for a heated hose.

I've never held one of these things in my hand or seen a good enough description to be sure this is how it works. I haven't been curious enough to buy one just to find out.

The valve works as you described. I used one to add the anti-asphyxiation function to my pillows to handle the power off, machine failure, situation while my lips are taped. viewtopic.php?f=1&t=75419&p=874430&hilit=+anti#p690334