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05-15-2021, 10:57 PM
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#1
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Junior Member
Brand: Thor Motor Coach
Model: Axis 27.7
State: California
Posts: 10
THOR #17468
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Remove 2nd Black Tank Valve
My coach has two black tank valves that must be opened to empty the tank. One is on the passenger side below the tank, and another is on the driver side near the sewer / grey water dump pipe. I'm considering eliminating the passenger side valve, because it is prone to damage and failure. Has anyone done this, and what would be the "downside" of such a modification?
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Bill Sheffler
2019 Axis 27.7
Pension Actuary
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05-15-2021, 11:43 PM
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#2
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I Think We're Lost!
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,195
THOR #8860
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Bad idea... :
That valve keeps the crossover tube from packing with last night's dinner...
You'd end up with epic clogging problems.
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05-16-2021, 12:26 AM
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#3
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Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,128
THOR #7035
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Gee! You think they put one on the passenger side for a reason (or 2 or 3)?
As Bob said, bad idea. It is a PITA to have to deal with 2 valves when dumping, but that's the price to pay for a floor plan which puts the black tank on the passenger side of the coach.
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Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
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05-16-2021, 12:45 AM
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#4
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I Think We're Lost!
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,195
THOR #8860
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For the record: I had the same setup on my Outlaw 29H.
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05-16-2021, 12:53 AM
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#5
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Senior Member
Brand: Thor Motor Coach
Model: Forest River Forester 235
State: Indiana
Posts: 4,883
THOR #6826
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Or you could eliminate the valve on the driver’s side and use either a cable or pushrod on the remaining, now remote valve. Or you could put an electric valve on it. However your concern seems not to be the inconvenience of two valves but the possibility of damaging the remote one. In any case, I wouldn’t eliminate the one at the tank for the reasons Bob mentioned.
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05-16-2021, 02:08 AM
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#6
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Senior Member
Brand: Thor Motor Coach
Model: Miramar 37.1
State: California
Posts: 2,460
THOR #12698
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The other reason for the black tank valve on the passenger side is that if you should hit/damage the crossover line while driving and it is not shut off at the tank, your black tank can leak out onto the highway. It also creates more of a push to clean out the black tank when dumping. I would not remove it.
Paul
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05-16-2021, 02:13 AM
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#7
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Senior Member
Brand: Thor Motor Coach
Model: AXIS 25.3
State: California
Posts: 142
THOR #20631
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I've got the same valve on my 2018 Axis 25.3. Got a quote to replace with a cable valve. $900 was a bit too much to swallow.
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Paul Woods
2018 Axis 25.3
Previous trailers: 2016 Wildwood X-lite 231RKXL, 1998 Thor Tahoe Lite 19UD, 1990 Starcraft Meteor tent trailer.
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05-16-2021, 03:21 AM
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#8
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Senior Member
Brand: Thor Motor Coach
Model: 2011 FW Hurricane 33T
State: England
Posts: 1,280
THOR #16471
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Quote:
Originally Posted by Wandering Woods
I've got the same valve on my 2018 Axis 25.3. Got a quote to replace with a cable valve. $900 was a bit too much to swallow.
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Amazon has the cable style for $60 and the electric valve for $130....
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05-16-2021, 06:07 PM
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#9
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Senior Member
Brand: Thor Motor Coach
Model: Forest River Forester 235
State: Indiana
Posts: 4,883
THOR #6826
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Quote:
Originally Posted by OldWEB
Amazon has the cable style for $60 and the electric valve for $130....
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They just bolt on so there shouldn’t be much labor charge - or it’d be an easy DIY upgrade. My coach (SOB) has a street side bathroom but only one valve. It’s on the side of the tank and is operated by a pushrod from the wet bay. Best of both worlds - just one valve and on the side so safe from damage. Only downside is that the tank drains the last little bit more slowly than having a bottom outlet.
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05-16-2021, 06:22 PM
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#10
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Senior Member
Brand: Thor Motor Coach
Model: AXIS 25.3
State: California
Posts: 142
THOR #20631
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Mine is complicated because Thor didn't build it per the schematics. The 2nd valve should be up against the tank.. instead it's between the 1st 90 and a 45. It's all glued joints so I have to cut it at the long transverse pipe and replace 2 45s, 1 90, valve, and misc short pieces.
Too much work at my age and level of disability. So it's point and pay.
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Paul Woods
2018 Axis 25.3
Previous trailers: 2016 Wildwood X-lite 231RKXL, 1998 Thor Tahoe Lite 19UD, 1990 Starcraft Meteor tent trailer.
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05-16-2021, 08:25 PM
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#11
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Senior Member
Brand: Thor Motor Coach
Model: Fourwinds 24F
State: North Carolina
Posts: 766
THOR #9511
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Using the two rule metaphor…
Rule 1: post #2 is the answer
Rule 2: Refer to Rule 1
I could add a Rule 3 that has post #3 as right but it is redundant with Rule 1.
Two valves to control “number two” are a wonderful thing.
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05-16-2021, 08:42 PM
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#12
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I Think We're Lost!
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,195
THOR #8860
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Jimbo,
So are you saying that I'm number 2?
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05-16-2021, 08:53 PM
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#13
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Senior Member
Brand: Thor Motor Coach
Model: Fourwinds 24F
State: North Carolina
Posts: 766
THOR #9511
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Quote:
Originally Posted by Bob Denman
Jimbo,
So are you saying that I'm number 2?
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Yup...#2 has the answer on #2.
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05-16-2021, 09:42 PM
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#14
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I Think We're Lost!
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,195
THOR #8860
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05-17-2021, 11:39 PM
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#15
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Junior Member
Brand: Thor Motor Coach
Model: Ace 27.7
State: Indiana
Posts: 29
THOR #15856
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Paul wadley is absolutely correct.
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05-22-2021, 08:56 PM
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#16
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Member
Brand: Thor Motor Coach
Model: Axis 25.3
State: Alabama
Posts: 77
THOR #20803
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I’ve tried to look on Amazon for a replacement, change but can’t find it. My pull handle on the PAX side is broke/well only have 1/2 a handle....
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Bob Ammons, aka AMMO BoB
USAF Retired
2017 Axis 25.3
Toad-undecided
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05-22-2021, 09:48 PM
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#17
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Senior Member
Brand: Keystone
Model: Sprinter
State: Florida
Posts: 1,422
THOR #15553
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Quote:
Originally Posted by WmJSheffler
My coach has two black tank valves that must be opened to empty the tank. One is on the passenger side below the tank, and another is on the driver side near the sewer / grey water dump pipe. I'm considering eliminating the passenger side valve, because it is prone to damage and failure. Has anyone done this, and what would be the "downside" of such a modification?
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the valve is there to protect the public from damage and frailer and unwanted discharge.
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2011 Keystone Sprinter 323BHS. Retired Master Electrician. All Motor Homes are RV's. All RV's are not Motor Homes.
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05-22-2021, 11:17 PM
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#18
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Senior Member
Brand: Thor Motor Coach
Model: 2011 FW Hurricane 33T
State: England
Posts: 1,280
THOR #16471
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Quote:
Originally Posted by Thor 25
I’ve tried to look on Amazon for a replacement, change but can’t find it. My pull handle on the PAX side is broke/well only have 1/2 a handle....
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What is the problem???
https://lmddgtfy.net/?q=Amazon%20rv%...valve%20handle
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05-22-2021, 11:24 PM
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#19
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Senior Member
Brand: Keystone
Model: Sprinter
State: Florida
Posts: 1,422
THOR #15553
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Quote:
Originally Posted by OldWEB
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It's amazing how many people don't know how to google.
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2011 Keystone Sprinter 323BHS. Retired Master Electrician. All Motor Homes are RV's. All RV's are not Motor Homes.
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05-22-2021, 11:29 PM
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#20
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I Think We're Lost!
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,195
THOR #8860
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I Google after brushing my teeth: it keeps my breath minty fresh!
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