Reply
 
Thread Tools Search this Thread Display Modes
 
Old 08-16-2017, 03:39 PM   #1
Veteran Member
 
aenlic's Avatar
 
City: San Leandro
Join Date: Mar 2017
Posts: 58
Placement of (fresh)water filter?

My freshwater flow has been steadily decreasing since I purchased my boat. I have a replacement pump ready to install, and got a new filter *and* housing to replace the one which was (weirdly) installed. (Some iron fittings at either end of the housing, gack.)

The original location is directly outboard of the freshwater pump, and the filter installed dramatically decreases water pressure, per the manufacturer. I selected a different filter, but I'm wondering if I would also be better off filtering only the galley water. The filter and housing are a nice compact 5" high, so under the sink would work.

Any thoughts and prior experience welcome, thanks.

Bob
aenlic is offline   Reply With Quote
Old 08-16-2017, 03:46 PM   #2
Guru
 
caltexflanc's Avatar
 
City: North Carolina for now
Join Date: Aug 2011
Posts: 6,348
Galley water only is an OK idea, but I never saw the need to filter the water. Do you filter the water at home? The Bay Area, and EBMUD has a pretty good water supply. What are your water tank(s) made of and have you had a look inside them?
__________________
George

"There's the Right Way, the Wrong Way, and what some guy says he's gotten away with"
caltexflanc is offline   Reply With Quote
Old 08-16-2017, 03:52 PM   #3
Guru
 
dhays's Avatar
 
City: Gig Harbor
Vessel Name: Kinship
Vessel Model: North Pacific 43
Join Date: May 2015
Posts: 9,046
Quote:
Originally Posted by aenlic View Post
My freshwater flow has been steadily decreasing since I purchased my boat. I have a replacement pump ready to install, and got a new filter *and* housing to replace the one which was (weirdly) installed. (Some iron fittings at either end of the housing, gack.)



The original location is directly outboard of the freshwater pump, and the filter installed dramatically decreases water pressure, per the manufacturer. I selected a different filter, but I'm wondering if I would also be better off filtering only the galley water. The filter and housing are a nice compact 5" high, so under the sink would work.



Any thoughts and prior experience welcome, thanks.



Bob


I would definitely do galley only. Unless you are filling your tanks with toxic sludge, the water you drink and cook with is the only water I would filter.

FWIW, the boat we bought has a filter on the galley sink and it has worked well.
__________________
Regards,

Dave
SPOT page
dhays is offline   Reply With Quote
Old 08-18-2017, 07:55 AM   #4
Guru
 
jleonard's Avatar
 
Join Date: Jun 2008
Posts: 5,034
I have a 10 micron debris filter ahead of my domestic pump. We use tank water only in the boat filled with city water from the dock.
The filter is clogged at the end of the short New England season.
__________________
Jay Leonard
Ex boats: 1983 40 Albin trunk cabin, 1978 Mainship 34 Model 1
New Port Richey, Fl
jleonard is offline   Reply With Quote
Old 08-18-2017, 09:04 AM   #5
Senior Member
 
City: Washington
Join Date: Jan 2011
Posts: 265
I built this monstrosity last year. We are filtering water for the whole boat. Hot and cold. It was just easier for me to do it this way (and a nice project). There was more room in the engine room for filters, and it was easy to re-route the existing plumbing. The first filter is a 5 micron sediment filter. The second is a .5 micron carbon filter. I was concerned with a loss of flow with the .5 micron filter, but that has turned out to be a non-issue.
Attached Thumbnails
mv Archimedes Water filtration.jpg  
__________________
-- Rusty
Rusty is offline   Reply With Quote
Old 08-18-2017, 09:58 AM   #6
Guru
 
HiDHo's Avatar
 
City: Beverly Hills
Join Date: Feb 2012
Posts: 1,371
Water Filters

This year I started filtering the water going into the tanks. This method is much easier than the whole boat filter I had been using and seems to be more effective. I haven't cleaned a faucet outlet airator of scale, etc since using the hose filter and we are living aboard using the tanks and boat water pump. I bought a two pack of these filters in the rv section at Walmart, but any rv retailer should have them. I added the inlet hose section for easy accessing the docks potable water faucets.
Attached Thumbnails
IMG_2176.jpg  
HiDHo is offline   Reply With Quote
Old 08-18-2017, 11:21 AM   #7
Veteran Member
 
aenlic's Avatar
 
City: San Leandro
Join Date: Mar 2017
Posts: 58
Quote:
Originally Posted by jleonard View Post
I have a 10 micron debris filter ahead of my domestic pump. We use tank water only in the boat filled with city water from the dock.
The filter is clogged at the end of the short New England season.
Thanks, Jay. I'd decided to filter all the pump outflow, based on the state of the filter I'm replacing, as well as the fact that I'll often fill the kettle or a pan from the hot water spigot to save time to get to boiling.

I'm surprised that neither my local chandlery nor West Marine stock the filters for compact (5" tall) filtration housings. For an extra $12, I replaced the white Culligan housing with a clear one from Pentek; that will permit visual assessment of the filter's GI (Grossness Index). ;-)

aenlic
aenlic is offline   Reply With Quote
Old 08-18-2017, 12:21 PM   #8
Guru
 
Lou_tribal's Avatar
 
City: Quebec
Vessel Name: Bleuvet
Vessel Model: Custom Built
Join Date: Jan 2016
Posts: 4,374
Quote:
Originally Posted by Rusty View Post
I built this monstrosity last year. We are filtering water for the whole boat. Hot and cold. It was just easier for me to do it this way (and a nice project). There was more room in the engine room for filters, and it was easy to re-route the existing plumbing. The first filter is a 5 micron sediment filter. The second is a .5 micron carbon filter. I was concerned with a loss of flow with the .5 micron filter, but that has turned out to be a non-issue.


Nice! If I may risk a comment, I would have added a bypass on each filter so I could still have water in case of any issue or dirty filter without readily available replacement part.

L
Lou_tribal is offline   Reply With Quote
Old 08-18-2017, 01:04 PM   #9
Veteran Member
 
aenlic's Avatar
 
City: San Leandro
Join Date: Mar 2017
Posts: 58
Y or Y? Adding a Y valve! :-)

Quote:
Originally Posted by Lou_tribal View Post
Nice! If I may risk a comment, I would have added a bypass on each filter so I could still have water in case of any issue or dirty filter without readily available replacement part.

L
I'm glad you mentioned that just in time for me, Lou; I'd thought of that, as I was used to having it on my whole-house filter, but in the heat of final installation had lost the thought.

I'll have at least one trip to the chandlery for necessary parts, will include shutoff or Y-valves as part of my installation.

Thanks!

aenlic
aenlic is offline   Reply With Quote
Old 08-18-2017, 02:29 PM   #10
Guru
 
jleonard's Avatar
 
Join Date: Jun 2008
Posts: 5,034
Quote:
Originally Posted by Lou_tribal View Post
Nice! If I may risk a comment, I would have added a bypass on each filter so I could still have water in case of any issue or dirty filter without readily available replacement part.

L
My bypass plan is to simply remove the element if necessary until I can get a replacement.
__________________
Jay Leonard
Ex boats: 1983 40 Albin trunk cabin, 1978 Mainship 34 Model 1
New Port Richey, Fl
jleonard is offline   Reply With Quote
Old 08-18-2017, 02:37 PM   #11
Guru
 
mbevins's Avatar
 
City: Windsor
Vessel Name: Keeper IV
Vessel Model: 44 Viking ACMY
Join Date: Nov 2013
Posts: 1,350
Quote:
Originally Posted by jleonard View Post
My bypass plan is to simply remove the element if necessary until I can get a replacement.
That's what I just had to do, we're out cruising right now, the cold is filtered the hot not, try adjusting the temp in shower with a very small amount of cold flow compared to hot, not fun.
mbevins is offline   Reply With Quote
Old 08-18-2017, 02:39 PM   #12
Senior Member
 
City: Washington
Join Date: Jan 2011
Posts: 265
Quote:
My bypass plan is to simply remove the element if necessary
That is my plan at this point as well. We carry two spare sediment filters and one spare carbon filter. Removing the filters or re-routing the plumbing is a short process.

But building in a bypass sounds like a good winter project.
__________________
-- Rusty
Rusty is offline   Reply With Quote
Old 08-18-2017, 04:21 PM   #13
Guru
 
DHeckrotte's Avatar
 
City: Philadelphia, PA
Vessel Name: Revel
Vessel Model: 1984 Fu Hwa 39
Join Date: Nov 2015
Posts: 1,024
We filter all the water supplied to galley and head (including the Raritan Marine Elegance throne). I changed the routing of the dock water so that it, too, is filtered. Pretty typical 10" filter similar to this except that the bowl is clear plastic: https://www.filtersfast.com/P-Cullig...ter-System.asp

No doubt plenty of crud in our 33 year old tanks, certainly plenty of crud coming down the dock. We no longer carry bottled water.

We had installed a small under-sink filter on the sailboat but it quickly filled the filter. We installed a large under-sink filter in Philadelphia and it has a dedicated spigot. It's only used for Sue's tea and our iced drinking water.
DHeckrotte is offline   Reply With Quote
Old 08-18-2017, 05:10 PM   #14
Guru
 
Maerin's Avatar
 
City: East Coast
Vessel Name: M/V Maerin (Sold)
Vessel Model: Solo 4303
Join Date: Jun 2013
Posts: 886
Quote:
Originally Posted by Rusty View Post
That is my plan at this point as well. We carry two spare sediment filters and one spare carbon filter. Removing the filters or re-routing the plumbing is a short process.

But building in a bypass sounds like a good winter project.
A two-way/three port NPT tapped valve sure makes it a LOT easier, way fewer fittings. You may not find that valve at the box stores, but Defender has them.

I'll 2nd putting the filter on the pressure side of the pump, it's standard practice. A strainer is what's appropriate for the suction side to preclude starving the pump.

FWIW, I don't see any benefit in a .5 mic filter on potable water, unless you have some sensitive laboratory appliances on the system. Faucets don't care. Nor do I see a benefit in dual progressive filters. You'll never be able to see any difference. Use a single 10" T&O carbon filter downstream of the pump discharge. The T&O will keep the water tasting good and the icemaker ice palatable. We cruise full time, some areas really lay on the chlorine if they have lots of rain, it ends up making the tank water taste pretty bad, the T&O pulls it out.
__________________
Steve Sipe

https://maerin.net
Maerin is online now   Reply With Quote
Old 08-18-2017, 08:57 PM   #15
Guru
 
Rebel112r's Avatar
 
City: Birch bay wa
Vessel Name: Rogue
Vessel Model: North Pacific 42
Join Date: Feb 2013
Posts: 648
Moved my pump, so it is in front of filter. It runs much quieter. Filter water before it goes into tank and also is filtered as used from tank. Water for flushing watermaker, filtered 2 more times.
Rebel112r is offline   Reply With Quote
Old 08-19-2017, 07:19 AM   #16
Guru
 
rwidman's Avatar
 
City: North Charleston, SC
Join Date: Sep 2010
Posts: 4,869
Quote:
Originally Posted by HiDHo View Post
This year I started filtering the water going into the tanks. This method is much easier than the whole boat filter I had been using and seems to be more effective. I haven't cleaned a faucet outlet airator of scale, etc since using the hose filter and we are living aboard using the tanks and boat water pump. I bought a two pack of these filters in the rv section at Walmart, but any rv retailer should have them. I added the inlet hose section for easy accessing the docks potable water faucets.

I think you have the right idea. If you feel the need to filter the water on your boat, filtering before you put it in the tanks is the best plan. It's the simplest as well.
rwidman is offline   Reply With Quote
Old 08-19-2017, 08:09 AM   #17
Guru
 
O C Diver's Avatar
 
City: Fort Myers, FL... Summers in the Great Lakes
Vessel Name: Slow Hand
Vessel Model: Cherubini Independence 45
Join Date: Dec 2010
Posts: 12,817
Had several point of use filters under sinks. Decided to get a large whole house filter housing and a carbon block filter. The filter and the housing were about $110. The replacement filter is about $65, rated for 20,000 gallons, and plan to replace it annually. Whole boat has nice water with no chlorine taste. Some municipal marinas seem to have a lot more chlorine taste in the water than others.

Click image for larger version

Name:	2017-08-19 09.01.50.jpg
Views:	127
Size:	147.4 KB
ID:	67858

Ted
__________________
Blog: mvslowhand.com
I'm tired of fast moves, I've got a slow groove, on my mind.....
I want to spend some time, Not come and go in a heated rush.....
"Slow Hand" by The Pointer Sisters
O C Diver is offline   Reply With Quote
Old 08-19-2017, 08:28 AM   #18
Guru
 
City: gulf coast
Join Date: Jun 2014
Posts: 3,440
I only filter the galley and with a charcoal filter as well as a junk filter. Common household items, no idea what the micron rating is.
there is also a screen filter between the tank and the pump to catch large particles. that seems to plug from time to time with what is probably sediment from the water and tank.

IMO filter should not be on the input side of pumps because there is little suction with most pumps.
bayview is offline   Reply With Quote
Reply

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


» Trawler Port Captains
Port Captains are TF volunteers who can serve as local guides or assist with local arrangements and information. Search below to locate Port Captains near your destination. To learn more about this program read here: TF Port Captain Program





All times are GMT -5. The time now is 09:01 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012