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Topic: There are a few threads on adding a third valve for dumping...... (Read 462 times) previous topic - next topic

There are a few threads on adding a third valve for dumping......

Is that project to improve sanitation? I would think shutting off the inner valve results in a cleaner secondary valve?

Thanks all.

Jeff
1993 U300 40ft GV SE
Build # 4344

Re: There are a few threads on adding a third valve for dumping......

Reply #1 –
It is to prevent a surprise when the primary black tank valve is not fully closed due to an obstruction and it also allows back flushing the black tank when you are dumping.  It pushes it in from the bottom where the crud is as well as a much faster way to move a lot of water into the black tank.
2025 Wanderbox Outpost 32 on F600 Expedition Motorhome
2015 Born Free Royal Splendor on Ford 550 nonslide version  for sale
Former Coaches  covering. 360,000 miles
1999 34 U270
2000 36 U320
2001 42' double slide U320
2018 Jeep Rubicon

Re: There are a few threads on adding a third valve for dumping......

Reply #2 –
That is a surprise that every owner with three valves has more than likely experienced.  One we (I) would rather not repeat.  Roger
Roger Engdahl and Susan Green
2001 U320 3610 #5879 (Home2) - 2014 Jeep Cherokee or 2018 F150
Hastings, MN

Re: There are a few threads on adding a third valve for dumping......

Reply #3 –
That is exactly what prompted the addition of a 3rd valve on mine.
If you don't have one you really should consider it.
Jerry
Jerry & Nanci
1999 U270 34'WTFI
2011 Malibu
A smart man knows what to say, a wise man knows when to say it.

Re: There are a few threads on adding a third valve for dumping......

Reply #4 –
I bought a portable 3rd valve, and just twist it on as needed, to help back flush grey tank into the black tank. 

But maybe more useful is the piece of mind, that I can always close off both tanks, and repair a problem valve later when I have the parts and place to do so.
Dave Cobb
Buckhorn Lake Resort The Club, #6202, Kerrville TX
check the map.  I do rent it out when I am traveling!
2001, U320, 36' #5887, in Kerrville, FT Club #17006, (7/23 to present)
2024 Jeep Grand Cherokee L, Summit, white
EX: 98 U295, 36' #5219, (mid door), (4/13-10/23)
EX: 93 U225, 36' (4/11 to 4/13)

Re: There are a few threads on adding a third valve for dumping......

Reply #5 –
My main reason for a third valve is that the black tank valve did not close all the way. When I took it apart, I discovered a long piece of white plastic with a small heart on the end of it (I think it might have been one of those doodads for keeping hair rollers in place). It was lodged in the valve and would not let it close completely. The worst part was, even if it was a slow leak, I got a terrible surprise when I removed the cap to hook up the hose.
 
It only takes once!
 
Trent

Trent and Jean Eyler
2000  U295  4003  WTFE  ISC  350
Build#5603 MC#17385
 

Re: There are a few threads on adding a third valve for dumping......

Reply #6 –
I got really lucky, my wonderful FT guru, Gary O. started me out 'right' by installing the 3rd valve right after I got the coach, so I was spared the shock of ever dealing with such unfortunate "surprises"  :o .Jeff, if y'all make it down to Lakewood in early August, you'll see my set up, a first class job by the one who most likely came up with the whole idea.  In fact, I'll even let you "try it out,"  just come over early on my last day there & you can do the honors!  :))  (just kidding, but it is a great set up!)