Skip to main content ↑ ↓
Topic: Septic Adapter (Read 609 times) previous topic - next topic

Septic Adapter

I did a search on the forum to see if this was already answered but I don't see it discussed. If I missed it I apologize, and please someone point me to the thread.

I imagine I must not be the only one who has a septic pipe that is larger than the standard septic hoses. I have a black adapter that came with my coach that steps down from the pipe to the correct size for standard septic hoses. I'm worried if this breaks I'll be screwed, and I would like to buy a backup one. Can someone please tell me where I can find this? I can't find such an adapter anywhere when I do a search online.

Thanks

Re: Septic Adapter

Reply #1 –
Amazon.com: Valterra T05-2285VP Universal Adapter - Thetford to Valterra ,...
As an Amazon Associate Foretravel Owners' Forum earns from qualifying purchases.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Septic Adapter

Reply #2 –
Your best bet would be to glue a reducer on your pipe to reduce the size of the pipe to accept the "modern" type of outlet.
The Valttera adapters are very flimsy and tend to leak a bit especially if they have a side load applied.
If you stay with just a Valttera adapter buy a few of them, they break easily.
1995 U320C SE 40'
Jeep 4x4 Commander - Limited - Hemi
"The Pack"  Yogi and Diesel our Airedales -  Charlie our Boxer/Akita mix. Gone but NEVER forgotten Jake our yellow Lab.
NRA Law Enforcement Firearms instructor - Handgun/shotgun
Regional Firearms instructor for national Armored Transp. Co.

Re: Septic Adapter

Reply #3 –
Quote from: Lon and Cheryl –
Your best bet would be to glue a reducer on your pipe to reduce the size of the pipe to accept the "modern" type of outlet.
The Valttera adapters are very flimsy and tend to leak a bit especially if they have a side load applied.
If you stay with just a Valttera adapter buy a few of them, they break easily.

Lon;  in 10 years of full time use, I have never broken a Valterra product and have used those adapters sold on Amazon as well.  I am sorry you had an issue with yours.
Joe & Dottie Allen
Sold!  December 2023.      2000 U320; build # 5645
Our coach " Maxine"
Motorcade #  15922;  Escapee 150950; FMCA F330833; Boondockers Welcome;  Harvest Hosts;  Thousand Trails
'98 U320 from 2000-'06
USAF '62-'66

"Do not spoil what you have by desiring what you have not; remember that what you now have was once among the things you only hoped for." ―Epicurus

Re: Septic Adapter

Reply #4 –
So I started with an adapter and it tended to leak, cut off the old Thetford fitting and glued the reducer and Valterra "common" fitting to the pipe. Has been reliable for me past four years.
1998 36 foot U270 Build No. 5328 WTFE, 900 watts solar, Victron controller, B2B, bat monitor, 600 AMPH lithium with 2018 Chevy Colorado toad, SKP #110239, Motorcade #17781, 2021 Escape 17B for when Coach is broken down and campsites are too small, retired and full-timer since Dec. 2020. Part of RV family since 1963.

Re: Septic Adapter

Reply #5 –

MM1313. No clue what coach you have? On my 2001 U320 i cut the factory connector off and added a Amazon.com: Valterra 3" RV Waste Dump Gate Valve w/Cap (1) : Automotive
And converted over. Having a third valve has many benefits to me. Belts and suspenders mentality and being able to back flush the black tank with they gray tank. Works great for me. I usually transfer all my potable water but a couple gallons into my gray tank while we are driving home .
Scott

As an Amazon Associate Foretravel Owners' Forum earns from qualifying purchases.

Re: Septic Adapter

Reply #6 –
Thanks to everyone who replied. i found the adapter and got one. much appreciated.

Re: Septic Adapter

Reply #7 –
Quote from: dsd –
MM1313. No clue what coach you have? On my 2001 U320 i cut the factory connector off and added a Amazon.com: Valterra 3" RV Waste Dump Gate Valve w/Cap (1) : Automotive
And converted over. Having a third valve has many benefits to me. Belts and suspenders mentality and being able to back flush the black tank with they gray tank. Works great for me. I usually transfer all my potable water but a couple gallons into my gray tank while we are driving home .
Scott
Do you have a picture with the 3" valve installed? I might do the same thing and want to see how you installed it. Thanks
As an Amazon Associate Foretravel Owners' Forum earns from qualifying purchases.
Dylan and Aimee
2001 U320 4013
Unit# 5896
450 HP/IFS
 

Re: Septic Adapter

Reply #8 –
Quote from: dlkj07 –
Do you have a picture with the 3" valve installed? I might do the same thing and want to see how you installed it.
Dylan,

Read the thread linked below for some ideas about how to do the 3rd valve mod.  The waste valve arrangement can vary on different year/model coaches, so you may have to get creative.

Recent third dump valve installations (split from another topic)

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: Septic Adapter

Reply #9 –
I glued a 3rd valve with adapter on to my main pipe, which I found to be a great solution.
If you go with this solution, measure carefully the depth to sidewall and the angle of the valve handle.
1998 U295 36'
Build# 5358

SMILE!....it makes people wonder what you have been doing.