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Njmurvin's avatar
Njmurvin
Explorer II
Mar 15, 2019

Arctic Fox black tank valve glued in?

I had a mobile service guy come out to quote me on replacing my black tank valve. The valve has been very difficult to operate (especially close) and is leaking a small amount.

After cutting an access door in the underbody to look at things, he concluded that the valve is glued to the black tank. He pointed out some hard white material at the connection and said it was glue. Oddly, there was a hose clamp there as well. That made no sense to me that they would glue it AND clamp it. And it's so close to the tank that cutting it off is not an option as it wouldn't leave enough for a new valve to be installed. So, he recommends leaving it open and installing another valve downstream where he has access.

These valves are prone to failure and need replacing from time to time. Is it normal for them to be glued like this or is it possible this white stuff is something other than glue? I'm beginning to wonder if this service guy knows what he's looking at.

15 Replies

  • People leave the old valve in, leave it open and install one of these.

    Not an elegant fix but it works and is cheap

    BTW I find it have to believe a valve is both clamped and glued in, normally people disassemble the sticky valve via the 4 bolts. Clean it and lube the stem (the metal rod) with silicone grease. Cycle the valve several times and reassemble. You have to get the tank empty and flush it several times with detergent solution (Dawn) before doing this.
  • Does that mean you can take off the 4 bolts and slide the valve body out without cutting the pipe on the outboard side?
  • Here's another look at the black tank and valve. These pix were taken as I was replacing the valve body and gaskets.
  • The 3" Bladex valve is glued and clamped to the black tank. The 4 bolts of the valve can be loosened and the blade body itself can be removed for maintenance or replacement. You may have to loosen the 3" pipe on the output side of the valve to provide some play for removing the valve body.
  • Try loosing the clamp and see if it pulls out.
    I dont have ur trailer but on mine there is a rubberized nozzle coming out of the black tank. The 3" line slips inside the nozzle and the hose clamp goes around the nozzle.
    The black valve usually bolts in between 2 flanges that are glued in the 3" line from the black tank.