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Thru-hull intake strainer / scoop

Old 03-22-2020, 03:54 PM
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Default Thru-hull intake strainer / scoop

For the wash down pump thinking open end downstream, pump has onboard strainer...

for the live well pump thinking open side facing forward for good pressure while running...

what cha think? Does it matter either direction?









Old 03-23-2020, 05:16 AM
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Is the inlet on the starboard side for wash down pump?
Old 03-23-2020, 05:57 AM
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Originally Posted by Newtauk1 View Post
Is the inlet on the starboard side for wash down pump?
yes
I hope youíre not going to tell me thatís a bad spot for it.... :-)

shurflow 4.5,,, 60 psi ?
Old 03-23-2020, 06:02 AM
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Originally Posted by Gup View Post
yes
I hope youíre not going to tell me thatís a bad spot for it.... :-)

shurflow 4.5,,, 60 psi ?
Plastic below the waterline (white thru hull) and no seacock? Or is it bronze that has been painted?

Good way to sink a boat.
Old 03-23-2020, 06:06 AM
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Not at all . Looks good. Wish my boats bilge area was that clean. I'm in the process of installing a pump on my 1993 21b Mako. I was considering using an existing through Hull drain that is not in use.
Should there be an exterior strainer on the outside in addition to the strainer on the pumps? I plan to have an exterior strainer.
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Old 03-23-2020, 06:07 AM
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I think the valve is Marelon ? Or milatary grade Nylon? Good catch on the white through hull.
Old 03-23-2020, 06:44 AM
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Because that's an OEM-only Forespar seacock on the baitwell pump, I would suspect the through hull fittings are also Forespar Marelon. While the washdown ball valve on a regular thru hull fitting fitting isn't technically to ABYC standards, it is commonplace on boats I see the ABYC transom sticker on. If possible I would suggest supporting that hose somewhere close to the fitting even if it means hanging a strap from the deck above.

To the OP's question, both external strainers mounted pointing forward is the only way they'll function at speed. The baitwell pump is a centrifugal type and it will continue to flow water at speed even when switched off but the sea cock can be closed to stop that.
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Old 03-23-2020, 11:16 AM
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Agree with Bills106.
Old 03-23-2020, 02:26 PM
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Thatís a Marelon ball valve and a ďnot your run of the millí thru hull fitting , Forespar ?

thinking a little more meat around the fitting besides the 1/2Ē hull was in order, I made a FG backing plate fastened with thickened resin before installing the fitting... see post 27 here
Backer

the line running from the ball valve to the pump is supported from a stiff hanger just out of sight in the pic...

OK, Iím going to point both scoops forward.... thanks folks,,,, and stay the hell away from everyone... :-)

Old 03-23-2020, 02:37 PM
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Originally Posted by bills106 View Post
Because that's an OEM-only Forespar seacock on the baitwell pump, I would suspect the through hull fittings are also Forespar Marelon. While the washdown ball valve on a regular thru hull fitting fitting isn't technically to ABYC standards, it is commonplace on boats I see the ABYC transom sticker on. If possible I would suggest supporting that hose somewhere close to the fitting even if it means hanging a strap from the deck above.

To the OP's question, both external strainers mounted pointing forward is the only way they'll function at speed. The baitwell pump is a centrifugal type and it will continue to flow water at speed even when switched off but the sea cock can be closed to stop that.
i tried to buy one of those OEM seacock, donít get it,,, whatís the big deal,,,, us mortals arenít qualified to install,,,,

thanks for your input,,,, THT rules... :-)
Old 03-23-2020, 03:23 PM
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Originally Posted by Gup View Post
i tried to buy one of those OEM seacock, donít get it,,, whatís the big deal,,,, us mortals arenít qualified to install,,,,

thanks for your input,,,, THT rules... :-)
Don't worry, the rest of us mear mortals can't get them either! It might have something to do with volume purchases.

You will be fine with your plan.
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