sea strainers

coolair · Post by **coolair** » Mar 28th, '13, 16:11

Will these work?
http://catalog.buckalgonquin.com/item/p ... 00rss655pf" onclick="window.open(this.href);return false;?

Or is the Groco the only way to go?

CaptPatrick · Post by **CaptPatrick** » Mar 28th, '13, 16:41

Matt,

Yeah, they work, but those are very old school, designed back in the 80's, and a PITA to clean out, bottom paint, etc...

While those oldies will be less expensive, the best is the Groco units with the hinged back:

See: Installing External Strainers

mike ohlstein · Post by **mike ohlstein** » Mar 29th, '13, 00:13

I put the Groco's on in November.

CamB25 · Post by **CamB25** » Mar 29th, '13, 08:41

Would these Groco units be overkill for a simple raw water system that feeds 2 live wells and a wash down?\

Cam

coolair · Post by **coolair** » Mar 29th, '13, 09:02

ya i am defiantly going with one of those 2. The reason i asked about the buck algonquin is they are instock, plus they are alot cheaper. bout $20 each whole sale, the grocos are $80
just the tie rods, cylenders and baskets for my original strainers would be over $290 wholesale. screw that.

My only other queston is size. Right now i have gas engines. and dont plan on switching to diesel any time soon. But if i did, what size would i need so i only have to buy these once.

CaptPatrick · Post by **CaptPatrick** » Mar 29th, '13, 09:06

Cam,

Probably, but it'd sure protect your pumps better than the standard clamshell slotted through hull strainer. All depends on the depth of your pocket...

CaptPatrick · Post by **CaptPatrick** » Mar 29th, '13, 09:20

Matt,

That $40 saved today will cost you a lot more in aggravation on your next bottom job after installing the old design...

In terms of raw water sizing, always go one size larger than the engine fitting for the through hull fitting, and 1 size larger for the strainer. ie: Engine raw water pump fitting = 1.5"; through hull should be 2" for standard or 1.5" full flow; strainer size should be 3". This give you a margin of safety in case some of the openings in the strainer get clogged between bottom jobs. Reduce the oversized hose just before the raw water pump, not at the through hull fitting.

Most diesel engines that will fit a B31 will be either 1.5" or 2" raw water fittings.

Dug · Post by **Dug** » Apr 1st, '13, 14:43

Pat,

How would you think those would work for AC? My installer really wants me to use an internal bucket type, like the ones I took out of the Bert to put on these type of external strainers.

Hmmm...

Hope you are well my friend!

Dug

CaptPatrick · Post by **CaptPatrick** » Apr 1st, '13, 15:09

Dug,

They'd work fine. I used them both on Hancock's and Bailey's B31s with March pumps at admidships near center line. Your installer needs to come on into the 21st centry...

wmachovina · Post by **wmachovina** » Apr 1st, '13, 16:29

Dug, in my marina here in Stuart, the water gets nasty in the summer and Everybody with internal strainers has problems all the time . Those trap doors make cleaning them out a breeze,never an issue.

wmachovina · Post by **wmachovina** » Apr 1st, '13, 16:31

They also make a round one I used for the genny with a round holes in the trap door,so I don't pressure feed the gen while underway. Bill

Ironman · Post by **Ironman** » Apr 1st, '13, 22:11

Ive installed those 11 years ago with no issues..
Wayne

Dug · Post by **Dug** » Apr 2nd, '13, 07:49

Awesome. I was hoping you would say that!

He wants to locate the AC unit behind the fridge. I like that idea.

where would you locate the intake? In the boat in front of the fridge, on the centerline, or further aft? Like between the water tank and the bulkhead? Or even further aft than that?

Hmmm.. See, I am going to do the through hull, to save the cost of a short haul. Yep, I'm still cheap. LOL!

Dug

CaptPatrick · Post by **CaptPatrick** » Apr 2nd, '13, 08:42

Dug,

Do not place the ac through hull further forward than forward engine bulkhead and locate it as close to the centerline of the boat as possible. You want the intake to never get a gulp of air when running at cruise or above. Center bilge, 4" off centerline, just ahead of fuel tank bulkhead is pretty much ideal. The pump is centrifugal and not self priming so mount it below the waterline...

Dug · Post by **Dug** » Apr 2nd, '13, 12:54

That makes total sense to me. Although I don't currently have a genset, and as such, I don't plan to run it when when off a dock and shore power, I have learned never say never, so better to build it for the future instead of the right now. Then comes the fun of running the hose... Oh well, thats why I am employing an installer. And want to make sure he does it right.

Thanks again, as always. And hey, is it time for the annual fundraiser? Or semi annual? Or will you fight me on sending on down a check? :)

CaptPatrick · Post by **CaptPatrick** » Apr 2nd, '13, 13:25

Thanks again, as always. And hey, is it time for the annual fundraiser? Or semi annual? Or will you fight me on sending on down a check?

Kick it off if you want, I running on fumes as usual...

Tony Meola · Post by **Tony Meola** » Apr 2nd, '13, 21:34

CaptPatrick wrote: Kick it off if you want, I running on fumes as usual...

Call this a thread High Jack, check will be in the mail.

coolair · Post by **coolair** » Apr 2nd, '13, 21:46

high jacked for good reason. as always thanks for great info. grocos on order

bertram31.com

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