I've lost the parts book for a compressor I own and I need a part. It's the check valve that screws into the tank. It's a Sears 4 horse power, it's about 20/25 years old, twin cylinder, oiled, horizontal 20 gallon tank. Could some supply me with a model number for this compressor? Sears won't deal with you unless you have a part/model number.
Thanks