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Topic: Safety relief valve wet tank (Read 637 times) previous topic - next topic

Safety relief valve wet tank

Need a part number if available for safety valve/ pressure relief on end of wet tank. Or can someone tell me what pressure is correct for valve setting so I can be sure I replace with correct pressure
2001 4010 U320
Build 5875

Re: Safety relief valve wet tank

Reply #1 –
You need a relief valve that opens at 150 psi.

I've got the number somewhere - I'll see if I can find it.
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: Safety relief valve wet tank

Reply #2 –
Here you go.  My coach has the Bendix ST-3 non-adjustable relief valve.  I saw mention on the Forum of a newer coach that had the Haldex KN31250 valve fitted.  Either one would work fine.  I prefer the design of the Bendix valve because the spring is not exposed to the interior of the wet tank where it might get gummed up.  Make sure whatever you use OPENS at 150 psi.

KN31250 - Pressure Relief Valve - Haldex product


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: Safety relief valve wet tank

Reply #3 –
Thanks. Starting to hunt one down. Hope leaks are getting close to an end.
2001 4010 U320
Build 5875

Re: Safety relief valve wet tank

Reply #4 –
Quote from: Spiderhitch –
Hope leaks are getting close to an end.
I hate to dash your hopes but the leaks never end.  They do get more manageable and less of a nuisance. 

Jan & Richard Witt
1999 U-320  36ft WTFE
Build Number: 5478 Motorcade: 16599
2011 Jeep Wrangler Unlimited w/Air Force One
Jan: NO5U, Richard:KA5RIW
The selected media item is not currently available.

Re: Safety relief valve wet tank

Reply #5 –
Just gotta say it, FT leaks are simple compared to a Newell.  Newell uses air for inside doors, toilet, dump valves, entry door, and various other things. 
Forest & Cindy Olivier
1987 log cabin
2011 Roadtrek C210P
no longer 1999 36' U320 build #5522
2013 Rzr 570 & 2018 Ranger XP1000
2006 Lexus GX470
2011 Tahoe LT 4x4
Previous 1998 45' 2 slide Newell, 1993 39' Newell