Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 17-08-2013, 12:43   #1
Registered User

Join Date: Jun 2013
Posts: 9
Sea Strainer Sizing

My raw water intake is a 3/4 hose but the stock sea strainer (plastic) is 1/2". I get the feeling this is not uncommon with production boats.

I looked at the Groco tailpieces and the actual opening for the 3/4" is only a tiny bit larger than the 1/2" tailpiece. In fact you can barely tell the difference!

Any thoughts on whether or not it is worth it to get a 3/4" strainer versus a 1/2"? The 3/4" Groco ARG that I like seems so huge for my application (Universal M35B). And given the flow of both are constrained at about the same diameter (tailpiece) - I'm not sure what the right answer is?

Thank you,
Downeaster
__________________
Downeaster is offline   Reply With Quote
Old 17-08-2013, 13:40   #2
Registered User
 
jstevens's Avatar

Join Date: May 2006
Location: On board Sarah, currently lying in Jacksonville, FL
Boat: Pearson, 424, 42', Sarah
Posts: 582
Images: 4
Re: Sea Strainer Sizing

Downeaster,
I think your analysis of the throughput differences between the two strainer is accurate. A bronze hose barb normally reduces the ID of water passage more than a plastic hose barb so there isn't a lot of difference between 1/2" plastic and 3/4" bronze.
One difference that might be significant is the size of the strainer basket. I don't know how much larger the 3/4" basket is than the 1/2", but the larger basket can contain more sludge and debris before restricting the water flow.
However, since the existing configuration does not appear to be causing any problems I would stay with it.

John
__________________
jstevens is offline   Reply With Quote
Old 17-08-2013, 16:52   #3
Registered User

Join Date: Jun 2013
Posts: 9
Quote:
Originally Posted by jstevens View Post
Downeaster,
I think your analysis of the throughput differences between the two strainer is accurate. A bronze hose barb normally reduces the ID of water passage more than a plastic hose barb so there isn't a lot of difference between 1/2" plastic and 3/4" bronze.
One difference that might be significant is the size of the strainer basket. I don't know how much larger the 3/4" basket is than the 1/2", but the larger basket can contain more sludge and debris before restricting the water flow.
However, since the existing configuration does not appear to be causing any problems I would stay with it.

John
Yes - and furthermore my theory is that the throughput for a 1/2" bronze is no different than a 3/4" bronze because the barb ID is constrained by the hose. So this real difference is the surface area of the screen. That's my theory at least.

Thanks,
Downeaster
__________________
Downeaster is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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
Rescued at Sea - Are You Prepared ? smackdaddy General Sailing Forum 132 22-02-2014 16:51
Obtaining Accurate Offshore/Hi-Seas Weather data/forecasts, while at sea ka4wja Marine Electronics 57 25-10-2013 12:00
HRO Sea Recovery Watermakers Dev0n60 Product or Service Reviews & Evaluations 26 26-07-2012 18:46
Crew Available: A Simple Sailor Needing to Get to Sea koryscott Crew Archives 0 14-11-2011 17:46



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 22:44.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.