I have a new camper and It has a black flushing connection, never has a camper with this feature and now I was wondering what is the purpose of the black flush
the flushing device is one of the best things ever made for cleaning out your black tank. You use less water than any thing else ever made for cleaning your tank. I installed one before the factory ever started in do so. you use less water and spend less time cleaning so you can get in and out of the dump station faster.