Waste valve

[paulmichie]

I am rebuilding valve that comes off the tank on side . This is a 1970 airstream sovereign 30'. Bought the thetford valve ring, etc but missing one piece that looks like a sanitary t but on end there is a plate for 4 screws and on other side of that a fitting with some nubs that one of the other pieces twists onto. I cannot find this strang sanitary t anywhere. Any help? Also where do I get more foam to put around waste tank. Can I replace my fresh water tank from underneath the trailer or do I have to remove the floor?

[rugjenkins]

It's easier to order a new valve. The fresh water tank should be under the couch or bed up front. It sits above the subfloor, unless your trailer had been modified