Scott Altitude Compensating Regulator

[cbogie]

Has anyone recently been successful in finding a source for overhaul on the built-in Scott regulator in the Bravo?  Part number 801765-00.

I have found several for sale but with tag dates that are a few years old.  I have also called aviationoxygen.com (Phoebe, the "oxygen lady") but they are unable to overhaul at this time.  There is nothing wrong with mine but I suspect it has not been overhauled since it was made.  Bottle is out for hydrostat and I wanted to get both done at the same time.  I realize there have been several threads but I was wondering if anyone had service recently?

 

 

[carusoam]

Let’s see if Doc is around… @M20Doc  (Scott oxygen regulator OH resource question… above)

Best regards,

-a-

 

[Guest]

15 hours ago, cbogie said:

Has anyone recently been successful in finding a source for overhaul on the built-in Scott regulator in the Bravo?  Part number 801765-00.

I have found several for sale but with tag dates that are a few years old.  I have also called aviationoxygen.com (Phoebe, the "oxygen lady") but they are unable to overhaul at this time.  There is nothing wrong with mine but I suspect it has not been overhauled since it was made.  Bottle is out for hydrostat and I wanted to get both done at the same time.  I realize there have been several threads but I was wondering if anyone had service recently?

 

 

Check with CASP Aerospace in Montreal.

Clarence

[cbogie]

Thanks for the lead.  They have inspection capabilities but NOT overhaul. Ill keep looking.

[StevenL757]

22 hours ago, cbogie said:

Thanks for the lead.  They have inspection capabilities but NOT overhaul. Ill keep looking.

Where are you located?

Edit:  Did some research for you.  Sent you a PM here.  Let's talk today...the earlier the better, as I'm starting a 4-day trip around 1500ET today but can chat between connections.

Steve

Edited January 14, 2022 by StevenL757

[cbogie]

Found C&L aero in Redding Ca.  They have overhaul capabilities.  Jeff quoted $625 for the pressure reducing regulator ( with the on/off valve) and $1100 for the altitude compensating portion.  Also commented that altitude compensating portion is unlikely to need overhaul.  He reported that due to a DOT ruling, our spun kevlar bottles can now be extended to 5 years between hydrostat testing ( not 3 years as before).

[cbogie]

Found C&L aero in Redding Ca.  They have overhaul capabilities.  Jeff quoted $625 for the pressure reducing regulator ( with the on/off valve) and $1100 for the altitude compensating portion.  Also commented that altitude compensating portion is unlikely to need overhaul.  He reported that due to a DOT ruling, our spun kevlar bottles can now be extended to 5 years between hydrostat testing ( not 3 years as before).

[PilotX]

I belive aerox will overhaul them too. I forget the quote but that seems about the same as I recall.

[kortopates]

I believe they only overhaul the first stage and then perform a functional test on the altitude compensating second stage. If it doesn’t pass then they replace with an exchange unit. Total is at about $1100 IRC.

C&L Aero has excellent customer service and very quick turnaround.


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[LANCECASPER]

A theoretical question: Since our 5 year hydrostatic test is due to the fact that DOT certified shops can’t legally fill a bottle that hasn’t been tested in the past 5 years, what if a person was to fill their own onboard in their hangar?

My reason for asking is that (1) it’s a hassle to get out and re-install but mainly (2) that you take a system that doesn’t leak and when it is put back together often leaks.

[carusoam]

Tanks change over the years and number of cycles…

essentially they get work hardened.

each material has specific elasticity characteristics …

 

The safety recommendation keeps it from failing with large safety factors.

 

Aluminum dive tanks get a reduction in max pressure after a set number of years…

looks like there is a known status….

and many unknown possibilities…  

probably safe, but not known to be safe…

PP thoughts only…

-a-

 

 

[kortopates]

A theoretical question: Since our 5 year hydrostatic test is due to the fact that DOT certified shops can’t legally fill a bottle that hasn’t been tested in the past 5 years, what if a person was to fill their own onboard in their hangar?
My reason for asking is that (1) it’s a hassle to get out and re-install but mainly (2) that you take a system that doesn’t leak and when it is put back together often leaks.

Nobody will notice till an accident investigation or perhaps a log book review by a FAA inspector following an incident.

virtually every leak that results from re-installing the tank comes from improperly rigging the valve to shutoff - probably over 90% of them. We’ve all suffered from that one. But very occasionally it’s the high pressure o-ring or a low pressure fitting needs replacement. An experienced tech will check for these.


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