Black tank slider shut off valve

[pudgybear]

2017 19' ROO, My drain valve is acting up and will not open all the way , Any ideas how to tear it apart and fix it ??? thanks Bob

[Chuck_S]

If the valve doesn't respond to some silicone spray lube (or even WD 40) replace it.

These are $20 valves and held together with 4 bolts. Should be nearly obvious how to replace it. Tip: buy the new valve before removing the old one. Tip 2: be prepared for a mess when you remove the valve.

-- Chuck