I repaired the black tank side right before it lead to the valve this spring. The factory used putty to join the two pipes together with a sleeve between them.... well that didnt last long (I thought it was a mistake or a short cut by Thor but someone here pointed out thats how they connect these large pipes together.... go figure).
I was going to take the valve out and clean it all up then glue together.... but was was barely leaking (like one drip a day while in my storage shed) so It just didnt seem worth it.
Then I was going to use a rubber coupler (with hose clamps) to connect the two side but my wife said "isnt there some sort of tape you can use"....well that trigged a light bulb so I went to HD and they had just want I needed. I actually used both the tape and then covered with rubber coupler but the tape fix it just fine.
I figured 5 or 7 years down the road (if I still have this RV) I might need to replace this valve and then I will fix or replace this black tank line.
So it all depend on how bad your leak is I guess.
Let us know how it turns out so others can learn from this.
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2017 Axis / 25.4: Big Foot Levelers, Aims 1200 Watt inverter, Ceramic Window Tint, Full River AGM 6V batteries, Front Hellwig Sway bar / Rear Track Arm, Safe T Plus Steering Stabilizer, PD 4655 converter, Hard Wired Surge Guard, WEboost + WiFi Ranger, LED Headlights/Driving lights, TPMS, Surge tank, Tornado flush, Viair Compressor
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