Reply
 
Thread Tools Search this Thread Display Modes
 
Old 07-16-2019, 01:41 AM   #1
Rivet Master
 
1970 25' Caravanner
Incline Village , Nevada
Join Date: Jul 2012
Posts: 622
Lack of pressure from SureFlo pump

Hello all. Hoping to get some help before our next camping outing in 10 days.

We have a SureFlo pump. 2.8 gpm. Not sure how old it is, but it was in our trailer when purchased 7 years ago and has worked fine. Have done a renovation of our Airstream and camped for the first time last weekend.

Turns on fine. Sounds good. Builds good pressure initially, but when faucet turned on, pressure fizzles out after 10 seconds. Pump kicks back on, but just can not keep up with demand. It puts out 16 ounces per 1.5 minutes.

Any suggestions? Should I just buy a new pump? Get a pump with more gpm ability?
__________________

Jeremy9107 is offline   Reply With Quote
Old 07-16-2019, 05:26 AM   #2
kpm
3 Rivet Member

 
2018 25' International
Mound , Minnesota
Join Date: Oct 2018
Posts: 202
Sounds like it may be a failing pump. They are easily replaced. The one I have in my 2018 International is the Shurflo 4008 Revolution (4008-101-E65). It pumps 3 GPM and is pretty quiet. https://www.pentair.com/en/products/...-pumps-rv.html
__________________

kpm is offline   Reply With Quote
Old 07-16-2019, 06:46 AM   #3
Rivet Master
 
kscherzi's Avatar
 
2013 27' FB International
El Dorado Hills , California
Join Date: Jan 2013
Posts: 1,243
Images: 24
Before buying a pump hook up to the city water (run a garden hose to your trailer). If same pressure problem you have a plugged pipe somewhere. In okay, get a new pump.
kscherzi is offline   Reply With Quote
Old 07-16-2019, 06:49 AM   #4
Overkill Specialist
 
GMFL's Avatar

 
2014 23' International
Dadeville , Alabama
Join Date: Oct 2015
Posts: 2,900
Images: 4
Blog Entries: 42
Check screen filter. If the filter was clogged it would not affect pressure build up but would affect flow.
GMFL is offline   Reply With Quote
Old 07-16-2019, 08:09 AM   #5
Overland Adventurer
 
AtomicNo13's Avatar
 
1991 34' Excella
2009 34' Panamerica
Telluride , Colorado
Join Date: May 2012
Posts: 2,451
If all else checks out, take the pump head apart and clean the valves and diaphragm. Goop and crud likes to hide in there!
AtomicNo13 is online now   Reply With Quote
Old 07-16-2019, 08:21 AM   #6
Rivet Master
 
waninae39's Avatar

 
2017 22' Sport
NCR , Ontario
Join Date: Feb 2017
Posts: 1,444
be sure to add HIGH FLOW filter. , plumbing is a serial connection

the item with the least flow limits the total flow rate

imagine connecting a home garden hose to a fire hose.

check all your connection to see what is causing flow restriction
waninae39 is offline   Reply With Quote
Old 07-16-2019, 08:51 AM   #7
4 Rivet Member
 
2015 Interstate Grand Tour
Lake Oswego , Oregon
Join Date: Jun 2017
Posts: 354
I had this happen and it turned out to be algae gunking up the aerator insert in the faucet.


Also, I know you said it sounded fine, but if it sounds loud and "can't keep up with demand" I've had this happen and it was air in the lines and the pump needed priming. I keep the toilet flushing (lowest and nearest point away from my pump) and air whooshes out... wait for that to clear the air, then repeat with each faucet to clear the air out of there too. This happens to me when I either drain the fresh water tank, or if I switch to/from city water and onboard water.
Tronadora is offline   Reply With Quote
Old 07-16-2019, 09:17 AM   #8
Married with Airstream
 
drbrick's Avatar

 
2004 25' International CCD
Vancouver Island , British Columbia
Join Date: Sep 2018
Posts: 127
Images: 2
All info above is great - check pressure at all faucets/shower head - is the problem Universal? If so, clean filter - if problem continues - replace pump. If just in one faucet the problem is the faucet or a plug in the line.

Bottom line narrow down where the issue occurs
__________________
La Dolce Vita Brick & Mona
2004 International 25CCD Registered Name "Blue Streak"
2013 F-150 SuperCrew FX4 Lariart (MaxTow) "Red Dragon"

Married With Airstream Blog Click Here
drbrick is offline   Reply With Quote
Old 07-16-2019, 09:29 AM   #9
2 Rivet Member
 
1985 25' Sovereign
Olympia , Washington
Join Date: Dec 2005
Posts: 47
To #1. Does your trailer have an inline water accumulator tank?
__________________
Streamer85 Roadhouse
Sovereign85 is offline   Reply With Quote
Old 07-16-2019, 09:55 AM   #10
Rivet Master
 
Silver Goose's Avatar
 
2008 27' Classic FB
Burkburnett , Texas
Join Date: Jul 2010
Posts: 976
I agree

Quote:
Originally Posted by GMFL View Post
Check screen filter. If the filter was clogged it would not affect pressure build up but would affect flow.
This filter is sometimes overlooked. It will be on the input side of the pump, but not necessarily attached to it, somewhere hopefully close by but in the line coming from the FW tank. Most are a housing with a clear plastic cylinder. Unscrew the cylinder from the housing and you will find a fine mesh screen that is probably plugged up. Take it out and either wash it under running water with a toothbrush or simply replace it. If it is particularly dirty, the housing may no longer appear clear.

If the screen is clogged, it will allow the pump to build water pressure in a closed line, but once a faucet is open the pump cannot suck enough water through the filter to maintain the flow and pressure.
__________________
AIR 47751
Silver Goose is offline   Reply With Quote
Old 07-16-2019, 10:39 AM   #11
1 Rivet Member
 
2014 27' FB International
Hooper , Utah
Join Date: Sep 2017
Posts: 19
Remove and clean your filter on the water tap. Most common problem. May need to use priers to loosen the filter and then it just screws off. Turn on the water tap with pump on and see how the water flow works. If OK, then clean the filter and reinstall.
albret is offline   Reply With Quote
Old 07-16-2019, 11:53 PM   #12
Rivet Master
 
1970 25' Caravanner
Incline Village , Nevada
Join Date: Jul 2012
Posts: 622
Appreciate all the replies. Going to go through each of your troubleshooting ideas.

Keeping in mind when pump initially starts and builds pressure before water use, the water pressure is great. This pressure fizzles out after 5-10 seconds then just trickles out as the pump struggles to keep up.

Have great pressure from all faucets with city water attached so will rule out problem with just one faucet/line, clogged lines, plugged aerator or air in lines.

I took the inflow filter off (just as Silver Goose said it had a silver mesh inside) before I reinstalled the pump as it was old/cracked/clogged with black yuck. So no inflow filter anymore.

Considering the gunk in the inflow filter, will do what AtomicNo13 said and check inside pump itself to see if needs cleaning.

waninae39 mentioned using a high flow filter. I have 2 filters in tandem that the pump sends water into before use in the lines. Sovereign85, you had asked about an accumulator. I don't have one, but the water filter housings each hold 1 liter. Wondering if these filters are preventing enough flow into the lines during use. But have plenty of flow when city water attached and this goes through the same filters...Going to look into that.

Thanks for all the suggestions
Jeremy9107 is offline   Reply With Quote
Old 07-17-2019, 04:46 AM   #13
Rivet Master
 
mimiandrews's Avatar
 
1966 22' Safari
Hilltop Lakes , Texas
Join Date: Jun 2008
Posts: 1,585
The filter in the pump inlet line is there to protect the innards of the pump from contamination. Suggest you re-install a good one once you solve the immediate problem.
mimiandrews is offline   Reply With Quote
Old 07-17-2019, 05:46 AM   #14
kpm
3 Rivet Member

 
2018 25' International
Mound , Minnesota
Join Date: Oct 2018
Posts: 202
Quote:
Originally Posted by Jeremy9107 View Post
[...]
waninae39 mentioned using a high flow filter. I have 2 filters in tandem that the pump sends water into before use in the lines. Sovereign85, you had asked about an accumulator. I don't have one, but the water filter housings each hold 1 liter. Wondering if these filters are preventing enough flow into the lines during use. But have plenty of flow when city water attached and this goes through the same filters...Going to look into that.

Thanks for all the suggestions
This is worth checking out. After my pump I use just a single very high flow Pentek FloPlus-10 filter with a low pressure drop of 2 PSI @ 1 GPM. With just this single filter, I had to adjust the pump to avoid stuttering (not your problem I know). I would imagine two filters in series would be too much for your pump. Has this arrangement ever worked for your pump? How does it behave with the filters removed (just empty filter housings)?
__________________

kpm 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
Water Pressure: Shore pressure high, All pressure in trailer low.... bhooves Sinks, Showers & Toilets 9 10-16-2016 03:22 PM
Anyone replace OEM aquatic II water pump with Sureflo Revolution? bonginator Water Heaters, Filters & Pumps 1 08-01-2014 09:06 AM
Chat CANCELLED! Lack of interest! markdoane Off Topic Forum 1 05-23-2006 06:04 PM
Brakes.....or lack of. freeofecho Brakes & Brake Controllers 15 03-27-2006 08:58 AM
lack t v reception.... norbert Our Community 1 09-02-2003 09:05 AM


Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 04:08 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.