Wanted Invacare home fill or similar micro-compressor

[TravisD]

Just for price reference - recently paid $55 for K bottle (250cf?) of Welding O2. Bottle rent is $0.38/day on a monthly lease, since I'm able to pick up, bank Nitrox (and bank whatever 100% is left over) and return the rented bottles. If I was going to keep bottles on-hand I would do a cheaper yearly lease. The previous time I made Nitrox it was $85 for a T (330cf?) of ABO grade. This is just me walking into the local gas distributor who competes with the local Robert's franchise. I imagine that if I had a business and was buying O2 more than like once a year they might give me better pricing.

 

[Rollin Bonz]

Swapped a bottle this morning. Went to high school with the dude that checked me out, so got a little discount...

 

[Tracy]

View attachment 909999

UltraFill circuit board can't complain about purity if there is no circuit board anymore. I machined the output adapter to make it NPT. Not practical for most people, although I think I still have the CAD file for it if anyone wants to try.

As for durability, the rebuilt oxygen concentrator I got had 18,000 hours on the clock. Guessing these oxygen boosters are probably good for at least a few thousand hours of runtime.

That works, what are you using for the LP cutout?

 

[iointerrupt]

That works, what are you using for the LP cutout?

There's an adjustable pressure switch on the high pressure side for turning it off at the fill pressure. On the low pressure side there's nothing, it's just plugged straight into the oxygen concentrator. Does it need something there?

 

[Tracy]

There's an adjustable pressure switch on the high pressure side for turning it off at the fill pressure. On the low pressure side there's nothing, it's just plugged straight into the oxygen concentrator. Does it need something there?

From a concentrator, probably not. I build them to use as a booster. As long as it has pressure coming in, it is fine. They destroy themselves quickly running dry.