Reply
 
Thread Tools Display Modes
 
Old 09-09-2011, 03:59 PM   #1
Bus Nut
 
syke's Avatar
 
Join Date: Mar 2011
Location: from: Prescott, AZ currently: Denver, CO
Posts: 469
Year: 1992
Coachwork: BlueBird
Chassis: All American RE
Engine: 8.3 Cummins
Rated Cap: 72
Black tank dump valve

What is everyone using for a black tank dump valve?

I've seen quite a few of the RV (poor quality) blade style valves just fall apart and I don't think I want to go down that road. There has got to be something better than that out there.
The 3" pvc ball valve is way overkill. A copper gate valve is nice but again way overkill.

Any ideas?
__________________
Ryan
Bluebird All American RE: Great White Buffalo (gone but not forgotten)
Our build thread: viewtopic.php?f=9&t=10065
syke is offline   Reply With Quote
Old 09-09-2011, 05:59 PM   #2
Bus Nut
 
bus-bro's Avatar
 
Join Date: May 2007
Location: Whidbey Island, WA.
Posts: 679
Year: 1984
Coachwork: Blue Bird
Chassis: All American
Engine: 3208 na boat anchor
Rated Cap: 2
Re: Black tank dump valve

I saw some beefier blade type valves in the Farm-Tek catalog. Don't have the catalog with me, so I can't say they had 3" valves. But, IIRC, they did and they were forty some bucks.
bus-bro is offline   Reply With Quote
Old 09-09-2011, 06:25 PM   #3
Bus Crazy
 
Stuff's Avatar
 
Join Date: Apr 2010
Location: Estevan, Saskatchewan, Canada
Posts: 1,485
Year: 1990
Coachwork: Goshen
Chassis: Ford
Engine: 7.3
Rated Cap: 25
Send a message via AIM to Stuff Send a message via MSN to Stuff
Re: Black tank dump valve

go with the plastic if you must but being a ball valve it will trap water inside the center and could bust when frozen. that is why they go with gate valves.
__________________
1990 E-350 Goshen Coach - 7.3L Diesel ---> http://www.skoolie.net/forum/viewtopic.php?f=36&t=5756

My Youtube channel - https://www.youtube.com/user/thestuffz
Stuff is offline   Reply With Quote
Old 09-10-2011, 01:43 AM   #4
Bus Geek
 
lornaschinske's Avatar
 
Join Date: Jun 2004
Location: Roswell, NM
Posts: 3,587
Year: 1986
Coachwork: BlueBird
Chassis: 40 ft All American FE
Engine: 8.2LTA Fuel Pincher DD V8
Rated Cap: 89
Re: Black tank dump valve

Don't kid yourself. An RV blade valve will freeze and come apart from freezing. Water will freeze and push the gasket out of wack causing the blade to leak (then crack from freezing water). We replaced one valve and rebuilt the other due to freezing temps in S GA. Redoing a black waste valve is such fun. Redoing the grey in only slightly less so. We will use the pvc ball valves and they will be inside an insulated bay that can be heated (all you need is a 60Watt incandescent light bulb). Lots of ways to heat the water bay. For all the other winters, we wrapped pipe heat cable (Frost King or Easy Heat brand) around the valves and built a temporary box out of pink or blue insulation sheathing. We put a small space heater plugged into a thermostat electric plug (Easy heat brand) and turned the heater on to low. When temps drop down to almost freezing, the heater will receive power and stay on until the exterior temps warm back above freezing. You can set an incandescent light bulb up on the same setup.


EasyHeat Pipe Heat Cable


EasyHeat Plug In Thermostat


Since we are heading into winter.....
The pipe heat cable can also be used on a water hose (laid flat -- do not spiral it) and covered with pipe insulation (use one size larger than your hose) and sealed shut with tape (the self sealing will not last). I like the neoprene but that's costly. The cheaper foam will work if you can cover it up well using water-resistant/weather resistant tape. These winterized water hoses take up a lot of room when stored. So you may not want to do up a 25 ft hose if you do this. You need to allow enough "extra" heat cable on both ends to wrap the hose bibb (usually on the bibb itself not the pipe stand) and the city water hookup on the RV/Bus. These are the two vulnerable spots in the water system. I have a couple extra inches to loosly wrap around the campground hose bibb and I place a "bag" made of Reflectix over the heat taped hose bibb and secure closed with a bungie cord. Most campgrounds that are open in the winter have their pipe stands heat taped and insulated. But the bibbs usually aren't protected. On the city water inlet on the side of the Class C, I put one of those foam hose bibb protectors like what you would use on a house hose bibb. I wrap a section of the heat tape around the metal connections and cover it all up with the foam cup (you have to notch out to allow the insulated hose to fit inside the cup). I leave my hose set up like this all year unless I am stripping off the insulation to replace. The foam cup and Reflectix Baggie get put away so that I can loose them and have to redo again every winter. Best thing to do is to put your water/sewer connections inside a bay to where you can heat them when temps drop to freezing. Means one less thing to worry about, even if you never plan on being in freezing temps.
__________________
This post is my opinion. It is not intended to influence anyone's judgment nor do I advocate anyone do what I propose.
Fulltime since 2006
The goal of life is living in agreement with nature. Zeno (335BC-264BC)
http://lorndavi.wordpress.com/blog/
http://i570.photobucket.com/albums/s...ps0340a6ff.jpg
lornaschinske is offline   Reply With Quote
Old 09-12-2011, 01:14 PM   #5
Bus Nut
 
syke's Avatar
 
Join Date: Mar 2011
Location: from: Prescott, AZ currently: Denver, CO
Posts: 469
Year: 1992
Coachwork: BlueBird
Chassis: All American RE
Engine: 8.3 Cummins
Rated Cap: 72
Re: Black tank dump valve

Thanks for the info.
What do you think about something like this: http://www.farmtek.com/farm/supplies...27_WF3327.html


I wanted to stay with the ball valves given that the rest of my water system uses them, but at 3 inches and being schedule 40, it is damn near impossible to turn. I would need a ball valve that is not designed to hold back a huge amount of pressure.

Let the search continue....
__________________
Ryan
Bluebird All American RE: Great White Buffalo (gone but not forgotten)
Our build thread: viewtopic.php?f=9&t=10065
syke is offline   Reply With Quote
Old 09-12-2011, 02:25 PM   #6
Bus Nut
 
bus-bro's Avatar
 
Join Date: May 2007
Location: Whidbey Island, WA.
Posts: 679
Year: 1984
Coachwork: Blue Bird
Chassis: All American
Engine: 3208 na boat anchor
Rated Cap: 2
Re: Black tank dump valve

I, of course, think they look great, and wish I knew about those when I did my tanks.

One advantage of the RV valve, though, is you can change-out the valve guts in place, easily, with spare parts that are everywhere.
bus-bro is offline   Reply With Quote
Old 09-12-2011, 03:26 PM   #7
Bus Crazy
 
Stuff's Avatar
 
Join Date: Apr 2010
Location: Estevan, Saskatchewan, Canada
Posts: 1,485
Year: 1990
Coachwork: Goshen
Chassis: Ford
Engine: 7.3
Rated Cap: 25
Send a message via AIM to Stuff Send a message via MSN to Stuff
Re: Black tank dump valve

one thing about heat tapes, stay away from the button style like in lorna's pic. the button is the ONLY source of on/off. so if the button warms up, it shuts off, tape does nothing. best is "self regulating" type.

__________________
1990 E-350 Goshen Coach - 7.3L Diesel ---> http://www.skoolie.net/forum/viewtopic.php?f=36&t=5756

My Youtube channel - https://www.youtube.com/user/thestuffz
Stuff is offline   Reply With Quote
Old 09-12-2011, 05:55 PM   #8
Bus Geek
 
lornaschinske's Avatar
 
Join Date: Jun 2004
Location: Roswell, NM
Posts: 3,587
Year: 1986
Coachwork: BlueBird
Chassis: 40 ft All American FE
Engine: 8.2LTA Fuel Pincher DD V8
Rated Cap: 89
Re: Black tank dump valve

Quote:
Originally Posted by Stuff
one thing about heat tapes, stay away from the button style like in lorna's pic. the button is the ONLY source of on/off. so if the button warms up, it shuts off, tape does nothing. best is "self regulating" type.
I've been using that exact style (in three sizes) since 2006. Granted I don't stay in New York, but the winters got well below freezing in Socorro, NM, Franklin, NC and Elizabethton, TN. As far as that goes, we got freezing temps in Cordele, GA and Corpus Christi, TX. They worked just fine. This particular style is the most commonly used heat cable among RVers who build their own insulated winter hoses. One of the cables I simply wrap around the idiot Blade valves to keep them thawed... it works and works well. There is no reason why the heat tape should be on if the ambient temps are warm enough.
__________________
This post is my opinion. It is not intended to influence anyone's judgment nor do I advocate anyone do what I propose.
Fulltime since 2006
The goal of life is living in agreement with nature. Zeno (335BC-264BC)
http://lorndavi.wordpress.com/blog/
http://i570.photobucket.com/albums/s...ps0340a6ff.jpg
lornaschinske is offline   Reply With Quote
Reply

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Black Tank question SitkaConvert Conversion General Discussions 4 09-23-2014 04:51 PM
AAV Valve for Greywater Tank? chev49 Plumbing, Water and Waste 9 03-02-2012 11:41 AM
Black tank question??? dirtygoat Plumbing, Water and Waste 5 10-27-2011 01:59 PM
One Tank or Two? (Grey/Black) Hex Plumbing, Water and Waste 13 06-29-2011 07:30 PM
Instructions on how to dump a black tank lornaschinske Conversion Tutorials and How-to's 0 02-26-2011 01:12 AM

» Virginia Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 01:35 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.