Let's talk drain pumps - Fiberglass RV


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 04-05-2016, 06:00 AM   #1
Senior Member
 
Johnny M's Avatar
 
Name: John
Trailer: '71 Boler, '87 Play-Mor II
Deep South
Posts: 1,147
Let's talk drain pumps

Morning guys & gals! Since starting our restoration project/modification last year, along the way I find something about our design that needs improving upon or tweaking as many others fiberglass rv owners have also. So to our design we added a bathroom to our '71 Boler with a large utility tub as a multi-purpose shower, sink, tub, washing machine all in one wonder ....

The drain initially I intended to be a gravity drain but out of several trips and testing, on 2 occasions we had drain issues. The first was with connections to the RV park sewer, as our RV was not high enough above the rv drain hookup to promote efficient draining and the second was with our portable gray tank with similar issue but maybe more affected by not having a vent in the gray tank to expel air inside the tank as the water filled it. So, I am back at the drawing board, adding a P-trap and looking at a pump solution to maximize drain efficiency. Couple of things, 1 our camper to ground clearance makes me worry about a sump pump type box under the shower of being to close to the ground, prefer the 12v pump be low amp draw for off grid use and cost is also a factor and would like to keep the pump on the low budget side.

I considered a macerator pump but don't think it will be necessary since we have a porta pottie that has its own black tank. So I was thinking of adding just a small SeaFlo water pump on the drain line with its own switch so we can turn it on only when needed. Since it will be below the shower pan priming should not be an issue and it should work with either the portable gray tank or rv sewer hookup. I would like any feedback and to know what others have done.
__________________

__________________
Johnny M is offline   Reply With Quote
Old 04-05-2016, 09:01 AM   #2
Senior Member
 
Name: Jack L
Trailer: Bigfoot B-17 CB
Washington
Posts: 1,226
There are pumps to drain showers on boats that connect directly to the floor drain with a hose .No sump pan or float switch necessary. You just turn the pump on when the shower pan starts to get full. I think a small marine bilge pump would also work with a container for a sump if you want to go that way. A float switch might be necessary with a sump tank. Check a marine parts web sight like West Marine.
__________________

__________________
Jack L is online now   Reply With Quote
Old 04-05-2016, 09:30 AM   #3
Member
 
Sands's Avatar
 
Name: Sands
Trailer: 2003 Scamp 16'
Arizona
Posts: 77
My 2003 Scamp has an in line Shurflo pump mounted under the floor of the shower, on/off switch on the shower wall just below the light. Works fine. Helps the water get from the shower pan to the waste tank. Turn pump on; take shower; turn pump off. Shurflo can run dry without damage, so don't need to worry about the amount of water going down the drain. I think this was factory installed (I didn't do it), but it would be a very simple installation.
__________________
Sands is offline   Reply With Quote
Old 04-05-2016, 10:30 AM   #4
Senior Member
 
Carol H's Avatar
 
Name: Carol
Trailer: 22' Airstream Formerly 16' Scamp
British Columbia
Posts: 11,731
Registry
Quote:
Originally Posted by Johnny M View Post

I considered a macerator pump but don't think it will be necessary since we have a porta pottie that has its own black tank. So I was thinking of adding just a small SeaFlo water pump on the drain line with its own switch so we can turn it on only when needed. Since it will be below the shower pan priming should not be an issue and it should work with either the portable gray tank or rv sewer hookup. I would like any feedback and to know what others have done.
If you wanted to keep it VERY simple get yourself a portable tank that has more than one hose attachment on it - mine came with an attachment for a garden sized hose or the large slinky hose. If filling with the garden hose attachment just open the larger hose attachment up a bit for air.

The other option is to add a pump under the trailer similar to what Scamp uses to pump water from the front shower to the rear grey tank. A read of the thread Relocating Shower Pump on Scamp 16 may be worth a read - it has some pictures of how it is done.

BTW my Scamp has a pump on the underside that is much smaller than what Scamp puts on the trailers today and sells on their website so can not comment on how variable it might be to being hit. Mine has a switch on the inside bathroom wall to turn on and off.
Carol H is offline   Reply With Quote
Old 04-05-2016, 06:32 PM   #5
Senior Member
 
Johnny M's Avatar
 
Name: John
Trailer: '71 Boler, '87 Play-Mor II
Deep South
Posts: 1,147
Quote:
Originally Posted by Sands View Post
My 2003 Scamp has an in line Shurflo pump mounted under the floor of the shower, on/off switch on the shower wall just below the light. Works fine. Helps the water get from the shower pan to the waste tank. Turn pump on; take shower; turn pump off. Shurflo can run dry without damage, so don't need to worry about the amount of water going down the drain. I think this was factory installed (I didn't do it), but it would be a very simple installation.
Would love to see a picture of the pump, might help with my mod.
__________________
Johnny M is offline   Reply With Quote
Old 04-05-2016, 06:40 PM   #6
Senior Member
 
Johnny M's Avatar
 
Name: John
Trailer: '71 Boler, '87 Play-Mor II
Deep South
Posts: 1,147
Quote:
Originally Posted by Carol H View Post
If you wanted to keep it VERY simple get yourself a portable tank that has more than one hose attachment on it - mine came with an attachment for a garden sized hose or the large slinky hose. If filling with the garden hose attachment just open the larger hose attachment up a bit for air.

The other option is to add a pump under the trailer similar to what Scamp uses to pump water from the front shower to the rear grey tank. A read of the thread Relocating Shower Pump on Scamp 16 may be worth a read - it has some pictures of how it is done.

BTW my Scamp has a pump on the underside that is much smaller than what Scamp puts on the trailers today and sells on their website so can not comment on how variable it might be to being hit. Mine has a switch on the inside bathroom wall to turn on and off.
Thanks Carol, we have and use the Zebra covered bucket, a collapsible portable gray water tank made for that purpose, the cap is suppose to let the water drain in, but I think in our case the shower drain line is not high enough above the bucket when it is on the ground to properly drain, air flow maybe an issue but a pump I think would solve the issue for that and rv sewer hookups as well. I considered a hard type gray water container, seen one that would work in Walmart for about $12 (gray color) in camp isle, but top would need modifying for my use and doesn't solve the rv sewer hookup unless I just manually dump it down. A pump sounds the easiest but maybe not the cheapest solution. I will check out the link too, maybe that will give me an idea...thank you!
__________________
Johnny M is offline   Reply With Quote
Old 04-05-2016, 07:10 PM   #7
Senior Member
 
Name: JD
Trailer: Scamp 16 Modified (BIGLY)
Florida
Posts: 1,045
Here is one way, but I couldn't get the sump low enough to work correctly.
If you look carefully you can see the drain for my shower and the filter ahead of the pump which is not visible on the other side of the pan

The problem with the white sump and sump is that you also need access to the top so that the lint filter can be cleaned.
These are used on many boats and is usually installed in the bilge. Not an option on the Scamp the way I built it.
I actually think that if the shower pan was modified to have a drain slot added on the side that connected to a slightly lower sump with the pump and an access panel above this would work good.
If you want to try the sump outfit I will give you a good discount on the one I did not use.
__________________
redbarron55 is offline   Reply With Quote
Old 04-05-2016, 07:23 PM   #8
Senior Member
 
Johnny M's Avatar
 
Name: John
Trailer: '71 Boler, '87 Play-Mor II
Deep South
Posts: 1,147
Quote:
Originally Posted by redbarron55 View Post
Here is one way, but I couldn't get the sump low enough to work correctly.
If you look carefully you can see the drain for my shower and the filter ahead of the pump which is not visible on the other side of the pan

The problem with the white sump and sump is that you also need access to the top so that the lint filter can be cleaned.
These are used on many boats and is usually installed in the bilge. Not an option on the Scamp the way I built it.
I actually think that if the shower pan was modified to have a drain slot added on the side that connected to a slightly lower sump with the pump and an access panel above this would work good.
If you want to try the sump outfit I will give you a good discount on the one I did not use.
JD I was looking at those sump pumps last night on eBay and Amazon, but I think I may do something similar to what you did. Does yours work on a manual switch or an automatic switch or sensor? What are you asking for the sump pump in case I change my mind?
__________________
Johnny M is offline   Reply With Quote
Old 04-05-2016, 07:26 PM   #9
Senior Member
 
Carol H's Avatar
 
Name: Carol
Trailer: 22' Airstream Formerly 16' Scamp
British Columbia
Posts: 11,731
Registry
Quote:
Originally Posted by Johnny M View Post
Would love to see a picture of the pump, might help with my mod.
There are photos of the Scamp pump installed in the link to the thread I shared with you.
Carol H is offline   Reply With Quote
Old 04-05-2016, 07:34 PM   #10
Senior Member
 
Name: JD
Trailer: Scamp 16 Modified (BIGLY)
Florida
Posts: 1,045
The white sump and pump has a level switch built into the pump. The pump is a repurposed bilge pump and the strainer was added in the sump.
My guess is that if you built a sump for the water to flow into then the sump could be made to work, but you need to be careful to keep the ground clearance for protecting the stuff down below.
If a slot were made in the side and the pan were sloped towards it then you could use that to feed the pump.
The sump pump could ne placed in a shallow sump and t could work.
The setup I ended up with is almost the same as the Scamp setup and it seems to work pretty good.
I used the Scamp drain setup (the white drain with the side outlet.)
__________________
redbarron55 is offline   Reply With Quote
Old 04-05-2016, 07:35 PM   #11
Senior Member
 
Johnny M's Avatar
 
Name: John
Trailer: '71 Boler, '87 Play-Mor II
Deep South
Posts: 1,147
Thanks Carol H
__________________
Johnny M is offline   Reply With Quote
Old 04-05-2016, 07:37 PM   #12
Senior Member
 
Johnny M's Avatar
 
Name: John
Trailer: '71 Boler, '87 Play-Mor II
Deep South
Posts: 1,147
Quote:
Originally Posted by redbarron55 View Post
The white sump and pump has a level switch built into the pump. The pump is a repurposed bilge pump and the strainer was added in the sump.
My guess is that if you built a sump for the water to flow into then the sump could be made to work, but you need to be careful to keep the ground clearance for protecting the stuff down below.
If a slot were made in the side and the pan were sloped towards it then you could use that to feed the pump.
The sump pump could ne placed in a shallow sump and t could work.
The setup I ended up with is almost the same as the Scamp setup and it seems to work pretty good.
I used the Scamp drain setup (the white drain with the side outlet.)
That's a P trap correct?
__________________
Johnny M is offline   Reply With Quote
Old 04-05-2016, 07:39 PM   #13
Member
 
Sands's Avatar
 
Name: Sands
Trailer: 2003 Scamp 16'
Arizona
Posts: 77
pics of Scamp shower drain pump install

Attached is what the pump on my Scamp looks. Hope it helps.
Attached Thumbnails
Scamp Pump 1.jpg   Scamp Pump 2.jpg  

__________________
Sands is offline   Reply With Quote
Old 04-05-2016, 07:49 PM   #14
Senior Member
 
Johnny M's Avatar
 
Name: John
Trailer: '71 Boler, '87 Play-Mor II
Deep South
Posts: 1,147
Sands yes that helps a lot thank you!
__________________

__________________
Johnny M 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
Hand pumps anyone? francene Care and Feeding of Molded Fiberglass Trailers 16 08-17-2009 10:20 PM
Air pumps jamessue Problem Solving | Owners Helping Owners 7 04-06-2009 12:12 PM
Water Pumps and Furnaces Diane D Problem Solving | Owners Helping Owners 10 01-24-2009 06:50 PM
Gray water, pumps, etc Suz Problem Solving | Owners Helping Owners 3 02-24-2006 05:09 PM

» Trailer Showcase

Swanky

Donna R

Boler

Adele M.
» Upcoming Events
No events scheduled in
the next 465 days.
» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 08:29 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.