|
|
12-22-2015, 09:40 PM
|
#1
|
Senior Member
Holiday Rambler Owners Club
Join Date: May 2013
Location: North Myrtle Beach, SC
Posts: 365
|
WHAT the HECK is THIS??
I was cleaning oot the blackwater tank and had the sprayer inside the tank on. This white thing on the blue waterline under the bathroom sink was buzzing up a storm. It's never made any noise before. In fact, I never noticed it till tonight.
Pressure regulator,maybe?
Thanks,eh?
__________________
Brad and Pat, the Dad and Mom-Dawgs with Kiddo and Dinah-Mite, the Dawter-Dawgs full timin' in our 2002 HR Neptune DP with 2017 Grand Caravan toad
|
|
|
|
Join the #1 RV Forum Today - It's Totally Free!
iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!
You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!
|
12-22-2015, 09:47 PM
|
#2
|
Senior Member
Country Coach Owners Club
Join Date: Dec 2010
Posts: 7,754
|
Anti siphon valve
__________________
Don
2002 Country Coach Intrigue
|
|
|
12-22-2015, 09:49 PM
|
#3
|
Senior Member
National RV Owners Club
Join Date: May 2012
Location: Ranchita, CA
Posts: 118
|
vacuum breaker / backflow preventer
__________________
2004 National Tropi-Cal T-350 LX Freightliner XC CAT 350
2005 TJ Wrangler RME 4.0L
|
|
|
12-22-2015, 10:01 PM
|
#4
|
Senior Member
Monaco Owners Club Workhorse Chassis Owner
Join Date: Aug 2002
Location: Clovis, CA, USA
Posts: 13,103
|
Mine has that anti siphon valve too and the first time I used the built-in black tank cleaner the valve leaked and soaked everything under the sink.
My RV dealer replaced it and mentioned they saw a lot of them go bad. So I decided not to use the built in tank sprayer from there on.
__________________
2004 Monaco La Palma 36DBD, W22, 8.1, 7.1 MPG
2000 LEXUS RX300 FWD 22MPG 4020 LBS
Criticism is easier than Craftsmanship
|
|
|
12-22-2015, 11:22 PM
|
#5
|
Senior Member
Holiday Rambler Owners Club
Join Date: May 2013
Location: North Myrtle Beach, SC
Posts: 365
|
What is it's purpose? I m guessing it doesn't let water from the blackwater tank into the water supply? Is it really necessary?
__________________
Brad and Pat, the Dad and Mom-Dawgs with Kiddo and Dinah-Mite, the Dawter-Dawgs full timin' in our 2002 HR Neptune DP with 2017 Grand Caravan toad
|
|
|
12-22-2015, 11:36 PM
|
#6
|
Senior Member
National RV Owners Club Ford Super Duty Owner
Join Date: Sep 2010
Location: Horse Town USA, CA.
Posts: 3,781
|
Yes it is needed. As already mentioned it is an anti-siphon/vacuum breaker to prevent sewage from being siphon from the black tank when the hose is disconnected from the tank sprayer.
__________________
1999 35 ft. Dolphin 5350, F53, Banks System, 5 Stars Tune, Air Lift Air Bags, Koni Shocks, Blue OX TruCenter, TigerTrak track bars F&R, Roadmaster 1-3/4" rear auxiliary sway bar, 2004 F450 Lariat Pickup 6.0 Diesel Crew Cab DRW, 4X4, GVWR 15,000, Front GAWR 6,000, Rear GAWR 11,000, GCWR 26,000,1994 36ft Avion 5er, GVWR 13,700, 2,740 Pin Weight.
|
|
|
12-23-2015, 04:39 AM
|
#7
|
Senior Member
Join Date: Nov 2015
Posts: 26,692
|
YES
It is an 'anti-siphon/vacuum breaker' and is REQUIRED by law to be installed due to 'possibility' of cross contamination between 'dirty' water source and 'potable' water source.
IS it really necessary in the REAL world........NO
Black water waste tank (dirty water) would have to get completely FULL and become pressurized (blocked vent line) enough to overcome incoming water (potable) pressure. It would then have to go back thru the spray holes into supply line and then back thru the internal check valve at the 'flush water' connection
NO it is not going to happen..........but the possibility exists cause the 2 water sources are connected (There will be a poop fountain off roof or up thru toilet LONG before it could ever get back thru flush system)
The device has spring loaded check valve inside PLUS the 'Cap' is open to atmosphere. That is why they can leak inside RV.........open cap breaks any potential vacuum
Clear one so you can see inside design
YOU (the owner) can remove and just hard pipe it and then install a backflow device on garden hose (or NOT )
|
|
|
12-23-2015, 06:05 AM
|
#8
|
Senior Member
Tiffin Owners Club
Join Date: Sep 2012
Location: Maryland
Posts: 1,433
|
I replaced mine and the second one leaked too. So I took it out and put in a plastic elbow. I then added a brass 90 with a shut off where you connect the hose along with an 18 inch piece of hose with a quick connect. When I'm done rinsing the black tank I shut the water off at the 90 first then at the pedestal. I unhook the hose open the cutoff with the 18 inch piece hanging outside the water bay so it drains to the ground, it's only clear water. When it's done draining I close the shut off so the black tank won't vent into the water bay. I also have a white 18 inch hose on the fresh water side so I can hang the hose outside the water bay to drain. And yes I use different hose for the filling the fresh tank and rinsing the black tank. The 18 inch extension came from the RV Filterstore.
|
|
|
12-23-2015, 08:44 AM
|
#9
|
Senior Member
Fleetwood Owners Club Freightliner Owners Club Spartan Chassis
Join Date: Nov 2009
Location: FORT WORTH, TEXAS
Posts: 2,746
|
On my coach it has nothing to do with the black tank flush. If you follow the lines I think you will find it goes to the peddle flush on your toilet. The anti back flush for the black tank is behind the hose connection outside in the wet bay.
Merry Christmas and a safe and Happy New Year
Bill
__________________
2008 Newmar Mountain Aire
450 HP Cummins ISM 4000MH Allison Trans.
Towing a 2014 Honda CRV with a Blue Ox tow bar.
|
|
|
12-23-2015, 10:03 AM
|
#10
|
Senior Member
Outdoors RV Owners Club
Join Date: Dec 2014
Location: Nowhere, now here. Freedom!
Posts: 4,602
|
It seems as logn as the operator took care not to allow the rinse water to get from the black tank to the hose connection on the side of the RV, there is no safety problem, unless another part of the sewer system wasn't working like the vent for the black tank.
My check valve/vacuum breaker has leaked since the second time I used the rinse system. Since I am the only one that dumps the tanks and lives in the trailer, I'm thinking "out it comes" and use a simple and cheap valve at the outside connection to the rinse system to stop water movement while I disconnect the water supply hose. I'm tired of water all over the bathroom floor.
__________________
ORV 19B Full Timer from '15 to '20, '14 Ram 2500 Diesel and a GSD. Vancouver, WA
de K7NOL 146.52Mhz Safety? (CLICK ME!)
|
|
|
12-23-2015, 11:40 AM
|
#11
|
Senior Member
Damon Owners Club Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 24,024
|
Quote:
Originally Posted by draboo
What is it's purpose? I m guessing it doesn't let water from the blackwater tank into the water supply? Is it really necessary?
|
Your guess is good. and yes it is.. Imagine the following (And this has ALMOST happened in the park where I'm at)
You are hooked up to the park's water supply.. Flushing your tank.. For some reason water pressure is LOST by the park (Blown fuse, burned connection on pump*rv. Broken city water main.. Car V/S power pole*sb... Back hoe v/s power line*rv.. Bug on Pressure switch*Sb.. Note *Rv means it happened in a campground *sb at a sticks and bricks I lived in. Broken city water main was a friend's house.
So now there is no pressure in the line and in fact since a faucet at a lower altitude is open ... there is a vacuum.
Now the hose, instead of spraying water into your tank to RINSE.. Is sucking "Stuff" out.
This is not a situtation I'd care to imagine.. let along expierence.. hence the vacuum breaker.
it "Breaks" the suction in that scenaro.. So now the hose is sucking AIR.. Fresh, Clean as it gets, AIR.
I have a vacuum breaker,, And when I upgraded The Flusher (TM) to The Tornado (TM) it added a spring check valve.. I did not know about the vacuum breaker when I created my flush hose so it too has both a spring check and a vacuum breaker.
Some folks say I'm paranoid.
__________________
Home is where I park it!
|
|
|
12-23-2015, 11:50 AM
|
#12
|
Senior Member
Holiday Rambler Owners Club
Join Date: May 2013
Location: North Myrtle Beach, SC
Posts: 365
|
Should that valve buzz while I m using the black tank sprayer? It never buzzed before. And...DW found a huge amount of water underneath the sink one time. We cleaned it up and attributed it to a hose we store in there had leaked the water. Maybe it was this anti siphon outfit leaking.
__________________
Brad and Pat, the Dad and Mom-Dawgs with Kiddo and Dinah-Mite, the Dawter-Dawgs full timin' in our 2002 HR Neptune DP with 2017 Grand Caravan toad
|
|
|
12-23-2015, 11:53 AM
|
#13
|
Senior Member
Outdoors RV Owners Club
Join Date: Dec 2014
Location: Nowhere, now here. Freedom!
Posts: 4,602
|
Quote:
Originally Posted by draboo
Maybe it was this anti siphon outfit leaking.
|
I'd bet a dollar that was what was leaking.
__________________
ORV 19B Full Timer from '15 to '20, '14 Ram 2500 Diesel and a GSD. Vancouver, WA
de K7NOL 146.52Mhz Safety? (CLICK ME!)
|
|
|
12-23-2015, 12:35 PM
|
#14
|
Registered User
Join Date: Mar 2010
Posts: 8,777
|
Quote:
Originally Posted by WILDEBILL308
On my coach it has nothing to do with the black tank flush. If you follow the lines I think you will find it goes to the peddle flush on your toilet. The anti back flush for the black tank is behind the hose connection outside in the wet bay
|
WILDEBILL308
In RVs that type of "vacuum breaker" can often be found in the water lines which supply pressurized pedestal/city water to the black tank flusher and to the toilet
However unlike biack tank flushers most RV toilets have a built in vacuum breaker.
Mel
'96 Safari
|
|
|
|
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
|
|
Thread Tools |
Search this Thread |
|
|
Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
|