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07-23-2015, 01:07 AM
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#1
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Seasoned Camper
Join Date: Jul 2015
Location: houston
Posts: 60
M.O.C. #17659
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Water pressure regulator
Hello,
We have a 2012 38' Montana Hickory 3665RE . Can anyone tell me if these have a built in water regulator. A n if anyone has had problems with there black water flush system. Thanks. Dennis & Lei. Happy Campers.
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Dennis & Lei
2011 3665 RE Montana Hickory. 2012 Chevy Silverado
3500 HD DRW LB 4WD LTZ Air Lift 5000
Cannon Ball Express Train air Horn 185dB
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07-23-2015, 01:20 AM
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#2
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Montana Master
Join Date: Mar 2013
Location: Frostproof, FL USA
Posts: 2,362
M.O.C. #13272
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Welcome to the MOC. The Montana models I have owned DID NOT have built in water regulators. I use cheap ones from Walmart and replace them every year.
The cheap valves on the black flush systems are known for failing, even though mine never has. I decided early on to use the Flush King attachment so I wouldn't have to rely on the Keystone installed flush system.
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Previous: 2008 Montana 3400RL & 2014 3725RL
Current: Full Time 2022 SOB TT Toy Hauler
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07-23-2015, 02:11 AM
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#3
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Montana Master
Join Date: May 2011
Location: Hixson
Posts: 3,436
M.O.C. #11397
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I am also careful to hook up to a water pressure regulator (a separate one that is NOT used for potable water) when hooking to the black tank flush.
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2018.5 Montana 3791RD
Full Timers 9/1/2010 through 1/16/2020.
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07-23-2015, 03:00 AM
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#4
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Montana Master
Join Date: Feb 2012
Location: Lake Gaston
Posts: 8,773
M.O.C. #12156
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Use of a water pressure regulator is a must. Many choices out there. Like others, I avoid the black flush because of valve failures, and use a backflush attachment as well at the sewer hose connection, with external dump valve. Works far better anyway.
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Mike and Lorraine
2002 3655 FL, 2005 3650RK
2010 3665RE, 2015 3910FB
F350 crew cab dually 6.7
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07-23-2015, 06:50 AM
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#5
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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We use a good water pressure regulator. We also removed our backflow preventer valve installed by Keystone in the rig and use an exterior one on the black tank flush now.
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Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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07-23-2015, 09:37 AM
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#6
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Montana Master
Join Date: Mar 2005
Location: Port Orchard
Posts: 1,153
M.O.C. #3403
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So DQDick, did you remove the BFP under the bathroom sink by just putting a straight sharkbite fitting to reconnect the pex tubbing and then putting a hose bibb vacuum breaker on the black tank flush connection in the convenience center?
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07-23-2015, 09:57 AM
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#7
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Montana Master
Join Date: Jul 2010
Location: Lake Havasu City AZ.
Posts: 1,811
M.O.C. #10552
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That is exactly what I am going to do with mine. My 2010 rig leaked at the BFV and make me crazy trying to find where the water was comming untell I read about it here. Cut the line both sides of the valve shark bite connector and a hose back flow on the inlet. Simple no more problems. JMHO
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Wayne and Ann Moore
2015 Ford F-350 King Ranch
Firestone air bags, bed saver.
Add 40 GAL tank in bed.
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07-23-2015, 11:31 AM
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#8
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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Quote:
quote:Originally posted by Fire5er
So DQDick, did you remove the BFP under the bathroom sink by just putting a straight sharkbite fitting to reconnect the pex tubbing and then putting a hose bibb vacuum breaker on the black tank flush connection in the convenience center?
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Exactly and I use one of these I got at a hardware store on a short hose I use only for flushing: http://www.amazon.com/LASCO-05-1763-...flow+preventer
Like all my connections, the black tank flush and the small hose both have quick disconnects for easy of use.
__________________
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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07-23-2015, 04:39 PM
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#9
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Montana Master
Join Date: Mar 2005
Location: Port Orchard
Posts: 1,153
M.O.C. #3403
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I have the same thing DQDick on my Black Tank Flush connection in the convenience center, but I haven't removed the BFP under the sink in the Bathroom. Thanks for the info...I will know what to do when it fails.
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07-23-2015, 05:13 PM
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#10
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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Why wait. I dumped mine when it was three weeks old. Didn't feel like waiting for it to lock up or leak all over the place.
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Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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07-23-2015, 07:54 PM
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#11
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Montana Master
Join Date: Apr 2006
Location: Mesa az
Posts: 2,945
M.O.C. #5651
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I was getting no water thru the flush system. I just took the backflow preventer apart and took out the little marble thing in it and have no problems with the flush now.
I do need to get a backflow preventer tho - on my list.
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Tom and Gail
2013 Mountaineer 362
2012 Silverado 2500
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07-24-2015, 02:52 AM
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#12
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Montana Master
Join Date: Nov 2013
Location: Willow Spring, NC
Posts: 992
M.O.C. #13909
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I used the cheap in-line regulator for the first year, but too little pressure and flow, so I got my new regulator from https://www.rvwaterfilterstore.com/.
These folks were very helpful. I got all my filters and regulators from them. I got the Watt adjustable regulator with meter and now have my regulator set for 55 PSI and all my pressure and flow problems are solved. Keep in mind the type of filter you select can mess with the flow and pressure. I have my regulator after my filter.
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Jim & Martha Abernathy
2014 Montana 3402RL Level UP, Sailun S637's, TST 507, 500W solar
2014 Ram 3500 Laramie® 4x2 diesel dually crew-cab 3.73 axle, Reese R20
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07-24-2015, 04:26 AM
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#13
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Montana Master
Join Date: Mar 2005
Location: Port Orchard
Posts: 1,153
M.O.C. #3403
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Good point Dick. Looks like another thing on my to-do-list.
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07-24-2015, 06:20 AM
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#14
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Montana Master
Join Date: Jan 2005
Location: North Ridgeville
Posts: 20,229
M.O.C. #2839
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The water filter store is a great place to purchase water filter systems, regulators etc. They know RV's.Been buying from them for years.
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07-24-2015, 07:57 AM
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#15
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Montana Master
Join Date: Nov 2007
Location: Kville
Posts: 2,865
M.O.C. #7871
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I'm going to have to show my ignorance, but here goes. We bought our 3400RL in Aug 2006. I always us the black tank flusher...never had a problem. So where is the BFP and what does it do? Thanks.
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07-24-2015, 08:53 AM
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#16
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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If there is a sudden drop in water pressure it's supposed to keep black water from siphoning back into your fresh water hose. Restaurants and other food service facilities are required to have the kind I use on any of their water outlets. Keystone over the years have used either a black or a clear one and they have failed on many occasions normally causing a leak, but sometimes closing the line. Now as to where they put it, that's a good guess. Many are found under the bathroom sink, others behind a pocket door, still others behind a closet or pantry wall. Ours was under the sink.
__________________
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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07-24-2015, 02:35 PM
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#17
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Montana Master
Join Date: Feb 2004
Location: Pahrump
Posts: 2,523
M.O.C. #1081
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Dick - Is that breaker the type that spits the water out when you shut it off or not?
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07-27-2015, 01:04 AM
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#18
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Seasoned Camper
Join Date: Jul 2015
Location: houston
Posts: 60
M.O.C. #17659
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Lot's of great advice. Thanks to everyone. I'm glad I founed this site. And glad to be a part of the MOC.
Dennis Hogan.
__________________
Dennis & Lei
2011 3665 RE Montana Hickory. 2012 Chevy Silverado
3500 HD DRW LB 4WD LTZ Air Lift 5000
Cannon Ball Express Train air Horn 185dB
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07-27-2015, 03:20 PM
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#19
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Montana Master
Join Date: Jun 2009
Location: Williamston
Posts: 631
M.O.C. #9432
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When the back flow preventer failed on my black flush system I discovered that small black pieces had gotten in the valve jamming it shut. The pieces were likely small pieces of the tank they cut through to install the flush line. the system worked for 5 years before failure. I took off the back flow valve, blew out the trash pieces with air, and re-installed it. All is good with zero leaks.
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