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Topic: Problems with third dump valve mod (Read 2040 times) previous topic - next topic

Problems with third dump valve mod

I started the third valve mod today but am stumped on a problem getting the flanged fitting, e.g. the first piece to go on, over the dump pipe. The flange sticks down too far as there is only about 3/16 clearance under the 3 inch pipe. Did anyone else have this problem? How did you solve it?
Royce & Denise, MC #17410
'01 U320 4220 ISM450 Build #5895 SOLD
Toad: '10 Honda CR-V

Travel makes one modest. You see what a tiny place you occupy in the world. - Gustave Flaubert

Re: Problems with third dump valve mod

Reply #1 –
I had the same problem. I just pried the pipe up with a pry bar and glued on the new valve. Once glued on I removed the pry bar and the pipe leveled out and works fine.
The selected media item is not currently available.Kent Speers
Locust Grove, OK
1993 U300 SSE 40' (Restored at FOT 2009) Build 4323
720 watts Solar
6V92TA DDEC Silver Engine
2014 Subaru Outback

Re: Problems with third dump valve mod

Reply #2 –

  I had a similar problem when adding the third valve. I used wooden wedges under the black ABS pipe behind the compartment
  panel to give required clearance.  After cement sets up---remove wedges---all good.
Jim & Doreen
2003 U320

 "Too often I would hear men boast of the miles covered that day, rarely of what they had seen"
― Louis L'Amour

Re: Problems with third dump valve mod

Reply #3 –
I would like to do this on my 91 what do I need to get?
91 GV U300 Unihome 40' Build 3811
6V92TA Detroit

Re: Problems with third dump valve mod

Reply #4 –
Quote from: stump –
...what do I need to get?
Open up the bay enclosure so your waste dump pipes are exposed.  Decide what kind of 3rd valve setup you want (search subject on Forum for ideas).  Cut off old valve flange.  Install new flange and valve.  While you're at it, if your original dump valves are old, you should take the opportunity to replace them also.  Here's what our plumbing looked like, and the parts I used (3 of the Bladex valve bodies, plus 2 flanges, and cap):

Amazon.com: Valterra T1003VPM Bladex 3" Waste Valve Body with Metal Handle:

Amazon.com: Valterra T1005 3" Slip Hub Flange: Automotive

Amazon.com: Valterra T1009 3" Bayonet Flange: Automotive

Amazon.com: Valterra Products, Inc. T1020 3" Black Termination Cap with Bayonet
As an Amazon Associate Foretravel Owners' Forum earns from qualifying purchases.
1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: Problems with third dump valve mod

Reply #5 –
I also did as the others and very gently adjusted the fixed pipe upward, cut and glued on the new end piece.

I did not glue on a third valve, but bought the clip-on-removable third dump valve and use it when or if I want.  It kept the compartment simpler and gives me some more room when we are hooked up full time, not just a dump and run.  I do like having the third valve for back flushing the black tank, and can see thru the clear pipe when the black tank is flowing clean.
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: Problems with third dump valve mod

Reply #6 –
Hi Royce,
  Our 1997 U 320 had a small piece of wood about 5/8" thick under that piece. I put another piece under the black tank tube just before the dump valve to have more even support.
Raymond
Raymond & Babette Jordan
1997 U 320
1998 Ford Explorer XLT