On Jun 17, 9:36*pm, Ned Simmons wrote:

See the bottom of Grainger p.3675 for a variety of sizes and styles.
As Mike said, note the relatively high temperature rating of these
checks.http://www.grainger.com/Grainger/wwg...ml?browserComp...

--
Ned Simmons-


Ned, thanks for the link. I dug out the owners manual and found the
Sears P/N (CAC-437) and stuck in the manual a receipt from the local
Sears parts service ctr (long since closed) for a replacement check
valve. So I have replaced this valve once before. WIth that
knowledge I went looking in my scrap air compressor related bin. Sure
enough, I found the old one - the bottom of the valve had broken free
or unscrewed and fell into the tank. Today when I removed the check
valve from the compressor the top of the check valve is missing!
Suddenly explains the terminal noise the compressor suddently made the
last time I was using it - I ran to the machine and shut it down but
it must have run for 30 to 45 seconds w/ the valve bit(s) in the
compresor cylinder. I have not pulled the compressor head yet to see
the damage but it looks like the tank pressure pushed the valve ball
or shuttle up the pressure line and into the head. I really can't
blame the check valve - it has been leaking back thru the release
valve for over a year - I was just too busy and learned how to work
around the issue rather than to replace it when it began to fail.