Webygail13 Posted February 19 Report Posted February 19 Anyone know where I can buy the red and green vacuum hose for the PC system? I also would like to buy some of the t fittings for it as well.
takair Posted February 19 Report Posted February 19 As I recall, you can get it from a Parker Hannafin store, with a Catch 22…..you can’t buy it for an airplane….
FlyingDude Posted February 20 Report Posted February 20 4 hours ago, takair said: ..you can’t buy it for an airplane…. Could you please explain this?
MooneyMitch Posted February 20 Report Posted February 20 Like electrical house wiring, different colors can be used as long as they are marked as a specific color required. I wonder if this would be the same for the PC hoses?
takair Posted February 20 Report Posted February 20 8 hours ago, FlyingDude said: Could you please explain this? They will literally ask what the application is and if you say airplane they will not sell it to you. That actually happened to me and others at the local store. So, ideally you would have a tractor at home with the same color pneumatic lines for the huffer blower thingy control valve. Or if you are a politician you could simply lie. 1
takair Posted February 20 Report Posted February 20 8 hours ago, MooneyMitch said: Like electrical house wiring, different colors can be used as long as they are marked as a specific color required. I wonder if this would be the same for the PC hoses? You can make use of equivalent quality lines. They are hard to find but pop up occasionally or you find a workaround for ordering through Parker. Color coding was to make installation easy, so as you suggested, alternate markings may be acceptable.
takair Posted February 20 Report Posted February 20 @Kevin Westbrook may recommend a source. He is the Brittain guru.
JoeM Posted February 20 Report Posted February 20 17 hours ago, Webygail13 said: Anyone know where I can buy the red and green vacuum hose for the PC system? I also would like to buy some of the t fittings for it as well. I removed it from my plane and may have a few t fittings. If you msg me I will check this weekend. Joe
M20E for me Posted February 21 Report Posted February 21 I bought mine on Amazon, nobody asked what it was for. You can get any color you want. 25 feet for the wing servos and 5 feet for the rudder and elevator servos. 1
Webygail13 Posted February 21 Author Report Posted February 21 Do remember the dimensions of the hose? What did you do about fittings?
M20E for me Posted Tuesday at 09:37 PM Report Posted Tuesday at 09:37 PM On 2/21/2026 at 5:48 AM, Webygail13 said: Do remember the dimensions of the hose? What did you do about fittings? I take that back, it wasn’t Amazon but I think I found it on EBay. I’ll look when I get to the hangar. I believe the ID is 3/8” but will check, I still have some left over.
Webygail13 Posted Friday at 02:44 PM Author Report Posted Friday at 02:44 PM Does anyone know the dimensions of the red and green hose?
jeremyc209 Posted Friday at 05:57 PM Report Posted Friday at 05:57 PM Here's a bunch of PC system docs. The tubing is 3/8 OD Poly-Flo, if you don't care about color you can order it from Spruce. 11971+Stabiilty+Augmentation+System+Installation+Manual+LSA-2+1965.06.09.pdf On-Off Valve Plumbing 1968 Mooney.pdf Panel On-Off Valve 1966 Mooney.pdf Positive Control AFMS 96019 Rev. B Model M20C and M20F.pdf Positive Control Operation and Service Instructions No. 11680.pdf Positive Control Operation and Service Instructions No. 11990.pdf 1
M20E for me Posted Friday at 07:45 PM Report Posted Friday at 07:45 PM Fresh Water solutions out of SC. Attached is a screen shot with material and size.
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