Thread Tools Display Modes
Old 12-20-2013, 10:13 AM   #11
Denver, CO
garbonz's Avatar
Join Date: Jan 2013
Location: Denver, CO
Posts: 1,880
Originally Posted by Chuckinca View Post
From "Home Guides"

"Both 5/8- and 3/4-inch hoses come in various lengths. From 25 to 100 feet long, choose the best length for your property. Be aware that a longer hose reduces the water volume expelled. For example, a 5/8-inch hose 25 feet long produces 44 gallons per minute (gpm). The same diameter hose at 100 feet long has a much smaller output at 11 gpm. Because 3/4-inch hoses have a wider mouth, their output for a 100-foot hose is slightly larger at 18 gpm, but the 25-foot hose increases the water flow to a staggering 72 gpm."

I assume they are at normal house pressure of about 65 PSI.


Another good point. However, in my experience most campground are also flow limited in that the pressure is related to the flow rate. Also, the spray nozzle in the tank restricts the flow by it reduced orifice.

I have been using the timing method for filling and rinsing the tank for MANY years, without problem. All the instances of floodingI have heard of were caused by forgetting to pull the tank valve after a few minutes. Using a stopwatch (countdown timer) prevents this.

Just my experience, your's may vary.

2007 Chevy 2500HD Classic LBZ Duramax/Allison (Stock)
2005 Bigfoot 1500C8.2 AWESOME
garbonz is offline   Reply With Quote
Old 12-20-2013, 10:23 AM   #12
Senior Member
Chuckinca's Avatar
Join Date: May 2012
Location: Lakeport, CA & The Villages, FL
Posts: 212
I pull mine after I count to 30 - about a half minute for our 35 gal black tank. And repeat two or three times until the water clears up.



2011 Rockwood Windjammer 2102W
2008 Ram Laramie 3500 Megacab 4x4 Cummins 6.7L Turbo Diesel
(the max loaded 2006 F150 5.4L V8 would only go 55 MPH Westbound on I-80 in Wyoming)
Chuckinca is offline   Reply With Quote
Old 12-20-2013, 12:10 PM   #13
Senior Member
ependydad's Avatar
Join Date: Nov 2011
Posts: 13,594
Originally Posted by quick83 View Post
garbonz, watch for diff water pressures when you do this if not using a pressure reducer on your water supply to flush connection. if you have high water pressure at the hook up it will change your fill time and you could have a disaster (like water coming up inside rv toilet and flood bathroom.) im just sayin. It only takes ONCE.
I do the same as garbonz - always use a timer on my phone and don't silence it until I've actually pulled the handle.

BUT- unlike garbonz, I put my wye directly on the hose bib at the site- one side goes to my tank flush, the other side goes to my hose and then my watts regulator which is hooked up to a short length of hose in my water bay/hookups area.

2013 Sabre 36QBOK pulled by a 2012 Ram 3500 DRW
Blogs: Learn to RV & Personal Fulltiming Adventure
Towing Calculators: Towing Planner
ependydad is online now   Reply With Quote

black, black tank, tank

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Virginia Campgrounds

Reviews provided by is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 12:16 PM.