Most likley how is the valve for my grey tank attached to the tank?

1999 Jayco 5th wheel. It leaks and I want to replace it myself.Most likley how is the valve for my grey tank attached to the tank?
when in doubt contact jaycoMost likley how is the valve for my grey tank attached to the tank?
most dump valves are held on by a piece of rubber hose and two clamps but a few are glued in but they can be removed by the 4 screws at each corner of te tank

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