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Old 04-07-2008, 11:16 AM   #1
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Another day, another problem. All of a sudden, while flushing my black tank, the water from the hose stopped flowing into the tank. I had the black tank valve open and water stopped draining out. When I closed the valve and waited, then opened it, some water came out, so it appears that there is a blockage somewhere because some water is getting in. There is what appears to be a water line going into the black tank (above and slightly to the left of center when you remove the outside velcroed panel) and when the hose is turned on, the connection drips... like there is a lot of pressure on the fitting. As soon as I turn the water off, the dripping stops. Any ideas?
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Old 04-07-2008, 11:16 AM   #2
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Another day, another problem. All of a sudden, while flushing my black tank, the water from the hose stopped flowing into the tank. I had the black tank valve open and water stopped draining out. When I closed the valve and waited, then opened it, some water came out, so it appears that there is a blockage somewhere because some water is getting in. There is what appears to be a water line going into the black tank (above and slightly to the left of center when you remove the outside velcroed panel) and when the hose is turned on, the connection drips... like there is a lot of pressure on the fitting. As soon as I turn the water off, the dripping stops. Any ideas?
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Old 04-07-2008, 03:49 PM   #3
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Jerry,

I would think there is a check valve in the input line to the black tank flush which could be stuck.
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Old 04-07-2008, 09:01 PM   #4
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Gator- Just had the same or at least very similar problem. Turned out to be the brass check valve in the line into the black tank. It came apart internally, which turns the check feature around 180 degrees. Dump your tank before undoing any connections on this line or you'll get a surprise. Once tank is MT, take check valve out carefully. The spring & keeper should be on the uphill side still. Check that the o-ring is in place on the valve head, push valve up into brass body from below, put spring in from top, then snap keeper onto valve stem from top. If the check valve is your problem, this should work unless the keeper broke. You can replace the whole valve w/a PVC one from a local plumbing supply store if yours isn't repairable.
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Old 04-13-2008, 03:29 PM   #5
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Was there too much water pressure that caused the valve to "pop"?. I had this happen on the clean water fill.
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Old 04-14-2008, 12:13 PM   #6
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Dan- On mine, the valve stem keeper simply popped off. Stem & keeper are plastic, inside a brass body. My theory is that the keeper wasn't really snapped properly into place from the factory, but I now carry a spare check valve in case theory is broke, and the keeper just snaps off occasionally.
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