CPP100-2 fuel drain valve
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CPP100-2 fuel drain valve
Trying to find a replacement for a leaking fuel drain valve for our '48 170, serial # 18118. In the C170 parts book, it is on page 72, figure 38, item number 36. Can't find that part number anywhere, or even a cross reference. Any ideas/suggestions?
Re: CPP100-2 fuel drain valve
Preferred Air Parts inventory shows that they have nine of them. Here's another -- probably more expensive -- source. If your A&P agrees, an alternative 1/8" NPT valve might be considered a minor alteration. Is it possible to just replace the o-ring on your leaking valve? Not sure if that is a Curtis valve. If so, maybe one of these seals will fit.
Gary
Re: CPP100-2 fuel drain valve
My 48 has pipe threaded drains. Buy them at Oshkosh for carrying extras.
John Hess
Past President 2018-2021
President 2016-2018, TIC170A
Vice President 2014-2016, TIC170A
Director 2005-2014, TIC170A
N3833V Flying for Fun
'67 XLH 900 Harley Sportster
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K3KNT
Past President 2018-2021
President 2016-2018, TIC170A
Vice President 2014-2016, TIC170A
Director 2005-2014, TIC170A
N3833V Flying for Fun
'67 XLH 900 Harley Sportster
EAA Chapter 390 Pres since 2006
K3KNT
Re: CPP100-2 fuel drain valve
Any idea why the plane needed two drain valves within inches of each other?
Gary
Re: CPP100-2 fuel drain valve
That type gascolator operates differently than later designs in that a standpipe creates a separation point in the fuel supply. Two valves allow for draining both sides of the system.
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
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Re: CPP100-2 fuel drain valve
Called Preferred Airparts and they did have 9 in stock, BUT, after they sent me a photo of the valve to be sure it is what I was looking for, it looks nothing like what I have. Doesn't even have threads on it. Maybe a discrepancy in the part numbers??
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Re: CPP100-2 fuel drain valve
And here is the picture of CPP100-2 Preferred airparts sent to me.
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Re: CPP100-2 fuel drain valve
That makes sense. Interesting the same style gascolator is used on the 120 and 140 yet they don't utilize this second drain valve.gahorn wrote:That type gascolator operates differently than later designs in that a standpipe creates a separation point in the fuel supply. Two valves allow for draining both sides of the system.
Gary
Re: CPP100-2 fuel drain valve
Kurt,Kurt Aichele wrote:Called Preferred Airparts and they did have 9 in stock, BUT, after they sent me a photo of the valve to be sure it is what I was looking for, it looks nothing like what I have. Doesn't even have threads on it. Maybe a discrepancy in the part numbers??
Sorry my leads aren't panning out. Dodson may have a '48 170 in their inventory. They do show a CPP100-2 drain valve but it's off of a Beech 35E. A used drain valve would be a last resort for me. I'd try overhauling what you have before replacing it with another used one of unknown airworthiness.
Gary
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Re: CPP100-2 fuel drain valve
I appreciate your help. It gave me a lead to find out that the CPP100-2 was not the correct part, at least the part Preferred Airparts had under that part number. Will probably go the route of rebuilding the existing valve.n2582d wrote:Kurt,Kurt Aichele wrote:Called Preferred Airparts and they did have 9 in stock, BUT, after they sent me a photo of the valve to be sure it is what I was looking for, it looks nothing like what I have. Doesn't even have threads on it. Maybe a discrepancy in the part numbers??
Sorry my leads aren't panning out. Dodson may have a '48 170 in their inventory. They do show a CPP100-2 drain valve but it's off of a Beech 35E. A used drain valve would be a last resort for me. I'd try overhauling what you have before replacing it with another used one of unknown airworthiness.
Also found some info on the bottom of the valve, stamped into the handle, almost microscopic! I couldn't make out the second number with certainty, either a 0, 6, or 8. Googled it several ways and came up with nothing.
Machined Products Co.
CCP-002
or
CCP-062
or
CCP-082
- MoonlightVFR
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Re: CPP100-2 fuel drain valve
Your correct part is out there some place..
Superseded parts numbers are a pain in the intellect.
Cessna and its Vendors found a way to sell off inventory of NOS parts from A/C models ceased production. Very smart list price at that time frame.
I have purchased arcane NOS parts from puzzling locations. Cessna parts from an island in the Pacific ocean?
Really! Do you mean we are not in KANSAS anymore?
You will find your part.
Superseded parts numbers are a pain in the intellect.
Cessna and its Vendors found a way to sell off inventory of NOS parts from A/C models ceased production. Very smart list price at that time frame.
I have purchased arcane NOS parts from puzzling locations. Cessna parts from an island in the Pacific ocean?
Really! Do you mean we are not in KANSAS anymore?
You will find your part.
gradyb, '54 B N2890C
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Re: CPP100-2 fuel drain valve
Here is a link showing exactly what the valve looks like, except the number stamped on the handle is different. I'm assuming the different part number signifies thread size.
https://www.ebay.ie/itm/Aircraft-Part-M ... 4b62f0bcd0
https://www.ebay.ie/itm/Aircraft-Part-M ... 4b62f0bcd0