I looked up the part number in my PA 23 250 Parts manual.
It was 753 946 but has been superseded to 455 974. This part is not in stock anywhere I could find.
The dimension of the original Piper bottle are 38.5 x 10 x 10 inches.
I was not able to find a similar sized bottle from the three oxygen system vendors, Mountain High oxgyen (www.mhoxygen.com), Precise Flight (www.preciseflight.com), or Aerox (www.aerox.com).
The biggest bottle I was able to find was a bottle that measured 9.1 inches in diameter and 31.5 inches high.
My opinion is that if you use a conserving canula, or even better one of the oxygen conservers such as the X3 from Precise Flight or the Portable Pulse-Demand systems from Mountain High, you will have as much duration as you need or had with the original bottle even though you’ll have installed a slightly smaller bottle.
Let me know if this is the information you’re seeking.
A phone call to one of the companies will probably clear up the available options.
Steve
