Reply
 
Thread Tools Search this Thread Display Modes
 
Old 08-26-2019, 04:15 PM   #1
Veteran Member
 
mvweebles's Avatar
 
City: Saint Petersburg
Country: United States
Vessel Name: Weebles
Vessel Model: 1970 Willard 36 Trawler
Join Date: Mar 2019
Posts: 62
Any interesting Sea Chest ideas?

Having a complete refit/restoration done on my 1970 Willard 36 in Mexico. Engine room real estate is tight - wondering if anyone has any cool ideas on a sea chest or intake manifold. I see Groco has an interesting manifold fitting and am considering that. Trying to reduce number of sea strainers. Might be a false errand, but thought I'd ask.
__________________
Advertisement

mvweebles is offline   Reply With Quote
Old 08-26-2019, 09:23 PM   #2
Guru
 
O C Diver's Avatar
 
City: Fort Myers, FL... Summers in Crisfield, MD
Country: USA
Vessel Name: Slow Hand
Vessel Model: Cherubini Independence 45
Join Date: Dec 2010
Posts: 7,417
My boat came with 5 seacocks. In an effort to reduce the number during my refit and repower, I went with one 2" secock with strainer and external screen for all raw water needs. There is a second seacock for the holding tank overboard discharge. Heading to the boatyard in a couple of weeks and will be replacing the manifold.

I prefer one seacock for quick flooding response. The engineering however requires some serious planning. Most devices will self prime. However, some pumps such as some air conditioning pumps aren't self priming and may loose their prime from another pump running. Also, you'll want to valve devices so that they may be isolated for repair without shutting the hole system down. Also it's important to follow most manufacturers recommendations. For instance, most strainer manufacturers don't want hard plumbing hanging on the strainer housing. So, a hose going to a distribution manifold is the preferred configuration. Also make sure you have enough flow to handle all devices that could be running at the same time.

Here's a pic of my new distribution manifold being dry fitted.

Click image for larger version

Name:	2019-08-26 22.16.33.jpg
Views:	25
Size:	196.7 KB
ID:	92861

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 online now   Reply With Quote
Old 08-27-2019, 05:48 AM   #3
FF
Guru
 
FF's Avatar
 
Join Date: Oct 2007
Posts: 19,509
For many folks the effort of installing a sea chest is too high.

I have found many folks get great service with a Y style strainer installed AFTER the sea water pump.

When the sea water impeller gives up almost all the impeller pieces are in the basket in the Y strainer , no chasing or back flushing the engine or heat exchangers needed.

Doesn't help the water coming into the boats system as a sea chest would , but usually a great bit of hassle insurance.
FF is online now   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





All times are GMT -5. The time now is 06:45 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012