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Old 01-25-2009, 05:05 PM   #2
Hobbitling
spring fever
 
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Join Date: May 2006
Location: Rochester area
Posts: 2,236
Well, problem solved. I got a little check valve from an aquarium supply store ($3), cut the intake hose and installed the valve in-line with the intake hose.

it was this valve. It's probably available at any aquarium store.
http://www.petsr4u.com/proddetail.asp?prod=A1165

I have to pump a little slower than normal to keep the check valve from locking, and I'll need some wire ties to keep it in place, but it works like a charm. Nice clean water, for $28 including repairs.
Although a valve with a somewhat stiffer spring might have been better, or possibly a ball or duckbill type valve which doesn't limit flow at all in one direction. This one is actually designed for air hoses, and closes if too much pressure flows through, even in the proper direction. And the fitting is a bit small for this tubing, a slightly larger barb would be better, but plastic wire ties seem to have solved that problem. But at least it's a good first effort, and it proves these things can be fixed.

I'll probably keep an extra valve in my filter maintenance kit along with silicone lubricant and o rings from now on.
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Last edited by Hobbitling; 01-26-2009 at 10:52 AM..
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