Reply
 
Thread Tools Search this Thread Display Modes
 
Old 05-23-2014, 07:30 PM   #1
Rivet Master
 
Boxster1971's Avatar

 
2013 Interstate Coach
Fulton , Maryland
Join Date: May 2010
Posts: 2,263
Fresh Water Tank Drain

I recently received a question about the fresh water tank drain. This drain is that white plastic plug with hex head about 1 foot behind the drivers door under the tank. It's another one of those areas where Airstream went with the cheap solution rather than provide a drain valve like Roadtrek and others.

I installed an adapter for an easy to remove hose bib cap. Picture below is shot of this low profile solution. When I flush tanks I just attached a hose shut-off valve to give me a temporary valve.

I know some others have installed an elbow on the drain and a line to a valve. I looked at doing that too, but the elbow hung down lower than my simple solution the NPT-to-hose bib adapters are available at Lowes and Home Depot.
Attached Thumbnails
Click image for larger version

Name:	IMG_0624.jpg
Views:	160
Size:	163.4 KB
ID:	212592  
__________________

__________________
- - Mike
--------------------------
2013 Airstream Interstate Lounge EXT
Boxster1971 is offline   Reply With Quote
Old 05-24-2014, 06:51 AM   #2
BikerBill
 
2014 Interstate Ext. Coach
Poconos of Pa , Pennsylvania
Join Date: Sep 2013
Posts: 239
What I would like to do is find a shop nearby, good luck, that has the ability to do a "spin weld" into the poly tanks. I'd have them put another threaded location on the front facing vertical wall down near the bottom. This would allow a ¼ turn vale to be left there for a simple, quick dump. Sure it would not be totally empty but would facilitate a better solution than what AI provides.
__________________

__________________
Bikerbill is offline   Reply With Quote
Old 05-24-2014, 10:58 AM   #3
Rivet Master
 
73shark's Avatar
 
2011 Interstate Coach
Overland Park , Kansas
Join Date: Aug 2011
Posts: 2,748
Not sure what's driving the need for a quick dump valve. It takes me about 30 seconds and a ratchet to remove the plug. Only dump at the end of the trip.
__________________
Glass half full or half empty to an engineer is the glass is twice as big as it needs to be.

PM me for sale info on my 2011. SOLD!
Upfitted Transit 350 sitting in driveway.
73shark is offline   Reply With Quote
Old 05-24-2014, 11:24 AM   #4
Rivet Master
 
2014 Interstate Coach
Arroyo Grande & Central Point , California & Oregon
Join Date: Sep 2011
Posts: 529
Quote:
Originally Posted by 73shark View Post
Not sure what's driving the need for a quick dump valve. It takes me about 30 seconds and a ratchet to remove the plug. Only dump at the end of the trip.
Don't know about everyone else Shark, but my concern was wearing out or striping the threads on the tank. Cost me less than 15 bucks for a plastic ball valve and a 3/4" street elbow. I mounted it with the valve handle on top to provide max clearance.
__________________
c21bill is offline   Reply With Quote
Old 05-24-2014, 11:39 AM   #5
Figment of My Imagination
 
Protagonist's Avatar
 
2012 Interstate Coach
From All Over , More Than Anywhere Else
Join Date: Dec 2011
Posts: 10,311
Quote:
Originally Posted by c21bill View Post
Don't know about everyone else Shark, but my concern was wearing out or striping the threads on the tank.
Not gonna happen. The plug is made of a softer plastic than the tank. For good reason. If anything strips, it will be the threads on the plug rather than on the tank. I'm still looking for a good source of spare drain plugs— they're an uncommon size— but as soon as I find a source I'll pick up a couple of spares, just for peace of mind.
__________________
WBCCI #1105
TAC LA-4

My Google-Fu is strong today.
Protagonist is offline   Reply With Quote
Old 05-24-2014, 11:43 AM   #6
Rivet Master
 
Boxster1971's Avatar

 
2013 Interstate Coach
Fulton , Maryland
Join Date: May 2010
Posts: 2,263
Sanitizing the tanks requires draining, then refilling with some bleach and then draining again after several hours of contact time. I do this a few times a year now. The first year I had my AI I left the water in too long and had a bad green algae contamination. The fresh water tank takes regular maintenance like a swimming pool.
__________________
- - Mike
--------------------------
2013 Airstream Interstate Lounge EXT
Boxster1971 is offline   Reply With Quote
Old 05-24-2014, 11:52 AM   #7
Figment of My Imagination
 
Protagonist's Avatar
 
2012 Interstate Coach
From All Over , More Than Anywhere Else
Join Date: Dec 2011
Posts: 10,311
Quote:
Originally Posted by Boxster1971 View Post
Sanitizing the tanks requires draining, then refilling with some bleach and then draining again after several hours of contact time. I do this a few times a year now. The first year I had my AI I left the water in too long and had a bad green algae contamination. The fresh water tank takes regular maintenance like a swimming pool.
I make a point of having a full freshwater tank throughout hurricane season, in case I have to evacuate. I sanitize once a year after unwinterizing, use a granular activated carbon filter to filter all water going into the tank, and add a SMALL amount of chlorine every time I fill the tank the rest of the year. When I say a small amount, I'm not talking about a sanitizing dose; it's a lot less than that.

EPA allows up to 4 parts per million of chlorine in drinking water, and as long as there is ANY detectable chlorine in the water, microbes and algae won't grow. As long as there is between 0.1ppm and 4.0ppm the water will be pretty much germ- and algae-free.
__________________
WBCCI #1105
TAC LA-4

My Google-Fu is strong today.
Protagonist is offline   Reply With Quote
Old 05-24-2014, 12:28 PM   #8
Rivet Master
 
73shark's Avatar
 
2011 Interstate Coach
Overland Park , Kansas
Join Date: Aug 2011
Posts: 2,748
I guess I'm more concerned about knocking a valve off or anything else that reduces ground clearance and dumping the tank.

I always use thread tape, so the chance of striping the threads is reduced.

I sanitize once a year but we don't drink the water.
__________________
Glass half full or half empty to an engineer is the glass is twice as big as it needs to be.

PM me for sale info on my 2011. SOLD!
Upfitted Transit 350 sitting in driveway.
73shark is offline   Reply With Quote
Old 05-24-2014, 03:53 PM   #9
Rivet Master
 
2014 Interstate Coach
Arroyo Grande & Central Point , California & Oregon
Join Date: Sep 2011
Posts: 529
One of you veteran posters please refresh my memory on how to add a photo to a post.
Thanks,
Bill
__________________
c21bill is offline   Reply With Quote
Old 05-24-2014, 04:01 PM   #10
Rivet Master
 
73shark's Avatar
 
2011 Interstate Coach
Overland Park , Kansas
Join Date: Aug 2011
Posts: 2,748
Select "Go Advanced" and then "Manage Attachments". Then go to " Browse " and pick the file you want to attach.
__________________
Glass half full or half empty to an engineer is the glass is twice as big as it needs to be.

PM me for sale info on my 2011. SOLD!
Upfitted Transit 350 sitting in driveway.
73shark is offline   Reply With Quote
Old 05-24-2014, 04:12 PM   #11
Rivet Master
 
2014 Interstate Coach
Arroyo Grande & Central Point , California & Oregon
Join Date: Sep 2011
Posts: 529
Here is my inexpensive solution.
Attached Thumbnails
Click image for larger version

Name:	000_0001.jpg
Views:	123
Size:	175.8 KB
ID:	212701  
__________________
c21bill is offline   Reply With Quote
Old 05-24-2014, 06:24 PM   #12
Rivet Master
 
Boxster1971's Avatar

 
2013 Interstate Coach
Fulton , Maryland
Join Date: May 2010
Posts: 2,263
Quote:
Originally Posted by Protagonist View Post
I make a point of having a full freshwater tank throughout hurricane season, in case I have to evacuate. I sanitize once a year after unwinterizing, use a granular activated carbon filter to filter all water going into the tank, and add a SMALL amount of chlorine every time I fill the tank the rest of the year. When I say a small amount, I'm not talking about a sanitizing dose; it's a lot less than that.

EPA allows up to 4 parts per million of chlorine in drinking water, and as long as there is ANY detectable chlorine in the water, microbes and algae won't grow. As long as there is between 0.1ppm and 4.0ppm the water will be pretty much germ- and algae-free.

Thanks Protag,
What amount of bleach do you add to your tank to get the required amount of chlorine under 4 ppm? Or do you use some form of pool chlorine?

Thanks,
__________________
- - Mike
--------------------------
2013 Airstream Interstate Lounge EXT
Boxster1971 is offline   Reply With Quote
Old 05-24-2014, 08:02 PM   #13
4 Rivet Member
 
toskeysam's Avatar
 
2013 Interstate Coach
Townsend , Tennessee
Join Date: Nov 2013
Posts: 487
Boxster...try this link

Emergency Water Purification Calculator
__________________
FMCA # 436814
toskeysam is online now   Reply With Quote
Old 05-24-2014, 08:39 PM   #14
Rivet Master
 
Boxster1971's Avatar

 
2013 Interstate Coach
Fulton , Maryland
Join Date: May 2010
Posts: 2,263
Good source of info. But this would be a problem for most people:

"To insure that Clorox Bleach is at its full strength, rotate or replace your storage bottle minimally every three months."
__________________

__________________
- - Mike
--------------------------
2013 Airstream Interstate Lounge EXT
Boxster1971 is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
drain valve on fresh water tank: '79 Argosy 6.0 campman All Argosy Trailers 7 01-26-2009 07:59 PM
Is there a drain for my Fresh water Tank!! Mrcrowley Fresh Water Systems 1 12-02-2008 05:44 AM
Fresh Water Tank Drain NEW94 Fresh Water Systems 5 11-04-2007 09:58 PM
Fresh water tank drain valve location? trilink3 Fresh Water Systems 8 11-04-2007 09:23 PM
Really need a drain on the fresh water holding tank?? SmokelessJoe Fresh Water Systems 16 06-17-2007 08:50 AM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 05:41 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.