Which oil quick drain ?

[blue44]

Anyone like to recommend a particular oil quick drain ? Seems like the Curtis CCB-37000 - https://www.aircraftspruce.com/catal...squickdv36.php - is about right for the Clipper ( O-235 ) but I'm open to suggestion... Cheers, Donn

[rideandfly]

Donn,

Just installed a FAA/PMA approved Saf-Air Oil Drain Sump Valve on the Vag's C85 to replace the leaking Aeroquip unit. During annual last month the A&P recommended the Saf-Air unit because the o-ring could be replaced and the Aeroquip unit could not. Saf-Air is lower cost compared to Aeroquip, too.

https://www.aircraftspruce.com/catal...rainValves.php

[smcnutt]

Donn,

Just installed a FAA/PMA approved Saf-Air Oil Drain Sump Valve on the Vag's C85 to replace the leaking Aeroquip unit. During annual last month the A&P recommended the Saf-Air unit because the o-ring could be replaced and the Aeroquip unit could not. Saf-Air is lower cost compared to Aeroquip, too.

https://www.aircraftspruce.com/catal...rainValves.php

Saf-Air is the one we have. Never had a problem with it.

[Jeff J]

Anyone like to recommend a particular oil quick drain ? Seems like the Curtis CCB-37000 - https://www.aircraftspruce.com/catal...squickdv36.php - is about right for the Clipper ( O-235 ) but I'm open to suggestion... Cheers, Donn

That particular valve is for fuel. The Curtis oil drain is a different design to allow a gasket between the oil sump and the valve. https://m.aircraftspruce.com/catalog...elflocking.php

[6PapaWhiskey]

That particular valve is for fuel. The Curtis oil drain is a different design to allow a gasket between the oil sump and the valve. https://m.aircraftspruce.com/catalog...elflocking.php

While the more expensive valves are great, the CCB-3700 is listed as a "Lycoming Oil Drain Valve" with FAA-PMA certification on the Curtis web site: http://www.curtissuperiorvalve.com/o...in-valves.html

I have one on my O-235-L2C and it works fine. I used a bit of Loctite 567 on the threads before installation.

I also had a similar Curtis drain valve on my previous aircraft (Rotax 912 ULS engine) after replacing the Saf-Air valve that began leaking shortly after installation. The Curtis valve worked much better and didn't leak after 400+ hours with 25-hour oil changes.

Tom P.
Wagabond @ 08A

[Steve Pierce]

The O-235-C1 engines I have worked on did not have a place in the sump for a quick drain. I ended up drilling the large suction screen plug and taping it to accept a pipe thread and the quick drain valve. I have been using the Safe-Air P5000. You can replae the o'rings in the Safe-Air valves unlike the Curtis.

[Jeff J]

While the more expensive valves are great, the CCB-3700 is listed as a "Lycoming Oil Drain Valve" with FAA-PMA certification on the Curtis web site: http://www.curtissuperiorvalve.com/o...in-valves.html

I have one on my O-235-L2C and it works fine. I used a bit of Loctite 567 on the threads before installation.

I also had a similar Curtis drain valve on my previous aircraft (Rotax 912 ULS engine) after replacing the Saf-Air valve that began leaking shortly after installation. The Curtis valve worked much better and didn't leak after 400+ hours with 25-hour oil changes.

Tom P.
Wagabond @ 08A

Then I shall stand corrected even though I couldn't get their link to the certification to open this morning.

If you had the Curtis specified valve for the Rotax then it was a little different design allowing for the crush gasket.

[Jeff J]

I looked up the PMA on the FAA website:

Part Name: Oil Drain Valve Assembly

Part Number: CCB-37000

Replacement For: 61879-002

Make/Model: Piper (Piper Aircraft Models, PA-23-250, PA-28-140, PA28-150, PA-28-151, PA-28-160, PA-28-161, PA-28-180, PA-28-181, PA-32-260, PA-32-300, PA-31P-350, PA-32-301, PA-32RT-300, PA-32RT-300T, PA-32-301T, PA-32R301/301T, PA-32-301FT, PA-34-200, PA-36-300, PA-36-375, PA-38-112, PA-46-310P, PA-46-350P, PA-46R-350T)
FAA Approval Basis: Identicality without a licensing agreement per 14 CFR § 21.303 Dwg. No. CCB-37000 Rev. G Date 9/15/15 or later FAA approved revisions
Responsible Office: Phoenix AZ FAA Office Tel: (480) 419-0330

Supplement Number: 1	Supplement Date: 11/18/2015
This approval issued to: Curtis Superior Valve Co Inc	PMA Holder Number: PQ05319NM
PMA Holder's Address: 2330 S. Airport Blvd #1 ChandlerAZ85286 United States

If I understand it correctly, while I am sure it works great, the 37000 drain would not be "correct" to use on the Clipper (minor alteration?). The only PMA'd drain I see from Curtis to install on an O-235 is the CCB-38000.

[blue44]

The O-235-C1 engines I have worked on did not have a place in the sump for a quick drain. I ended up drilling the large suction screen plug and taping it to accept a pipe thread and the quick drain valve. I have been using the Safe-Air P5000. You can replae the o'rings in the Safe-Air valves unlike the Curtis.

The pan in N5972H appears ready to accept a 1/2-NPT quick drain, it's shown as an O-235-C1. Any reason not to proceed ? What do you recommend for thread sealant ? Thanks !

20190419 clipper o235c1 oil pan.JPG

[Steve Pierce]

Later style sump, good deal.
https://www.aircraftspruce.com/catal...?clickkey=8718