I bought a Blackburn about 8 years ago. This fall the head suddenly wouldn't stay on the valve. I went to my LBS's looking for an easy fix. Not getting any satisfaction there, I called the company looking for replacement parts. They told me they no longer made that model, but if I sent the defective unit in, they would send me a replacement.
Believe it or not I found the original box, and on the front it said - 'Lifetime Warranty'. So $8 and 10 days later I had a new pump.
Imagine that, a company that actually lives up to it's promises! Obviously I will be a Blackburn customer for a very long time.