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Old 03-19-2016, 02:30 PM   #1
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Raw Water Elbow

I've attached two pictures below. One is the engine raw water strainer. It was manufactured by Bair...apparently out of business. The second picture is of a stainless steel elbow that comes out of the strainer. The connects the 1 1/2" stainer outlet to the 1" ID hose going to the raw water pump.

The elbow has some corrosion on it, and I would like to replace it. I've been advised by Brian Smith at ADC to go with a brass or bronze elbow. But I have not found anything that reduces from 1 1/2" to 1" in my searches. I also don't know if the strainer threads are NPT or NPS.

Any ideas on what I should get or where to get it.

Thanks!
Mike


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Old 03-19-2016, 04:01 PM   #2
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Are you sure that Brian said to use brass? I would not use common brass, sometimes called yellow brass in sea water service. The sea water will remove the zinc in the brass and it will deteriorate badly. You want marine bronze or red brass which is an alloy with much lower zinc content. It has a much duller, slightly red color than yellow brass which has a bright yellow color.

Apollo and Groco make NPT to hose barb elbows. See Defender.com Search Results: bronze elbow

David
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Old 03-19-2016, 04:33 PM   #3
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Originally Posted by djmarchand View Post
Are you sure that Brian said to use brass? I would not use common brass, sometimes called yellow brass in sea water service. The sea water will remove the zinc in the brass and it will deteriorate badly. You want marine bronze or red brass which is an alloy with much lower zinc content. It has a much duller, slightly red color than yellow brass which has a bright yellow color.

Apollo and Groco make NPT to hose barb elbows. See Defender.com Search Results: bronze elbow

David

David,

Brian did say brass, but he listed bronze first. That is what I am looking for. That said, nothing I am seeing...even on Defender...steps down from 1 1/2" to 1".

Thanks, Mike


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Old 03-19-2016, 04:56 PM   #4
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You might need to use two pieces, as in elbow and then pipe to barb fitting.


Plumbing Fittings, Bronze
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Old 03-19-2016, 05:36 PM   #5
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So you want to go from female 1-1/4" NPT to 1" hose barb, right. So buy a 90 degree street elbow, a 1-/1/4" to 1" bushing and a 1" hose barb.

90 Degree Street Elbow Fittings - Bronze, NPT

and

Conbraco Straight Pipe To Hose Adapters

and

Hex Bushings - Bronze, NPT

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Old 03-19-2016, 06:09 PM   #6
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Quote:
Originally Posted by djmarchand View Post
So you want to go from female 1-1/4" NPT to 1" hose barb, right. So buy a 90 degree street elbow, a 1-/1/4" to 1" bushing and a 1" hose barb.

90 Degree Street Elbow Fittings - Bronze, NPT

and

Conbraco Straight Pipe To Hose Adapters

and

Hex Bushings - Bronze, NPT

David


Many times you can't find this stuff at West Marine, but a large plumbing supply company will be able to put together what you need with adapters or other fittings. You want bronze, not brass.

Take your original part with you.
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Old 03-19-2016, 07:40 PM   #7
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Agree that bronze would be best...looks like stainless was previously used and could be used again.
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Old 03-19-2016, 11:03 PM   #8
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I would call Groco in Stevensville, Maryland and ask them what part numbers they recommend.
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Old 03-19-2016, 11:31 PM   #9
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All you need is a 1-1/2 to 1 inch bushing and a 1" male npt to 1" hose elbow.
Please forgive me for linking to my own website. You should be able to find these fittings at any marine store.
ACR Bronze Hex Bushings 1-1/2"
Perko Pipe Elbow Fitting 1"
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Old 03-20-2016, 06:30 AM   #10
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I see your in Virginia Beach?
Call Hampton Rubber.
I bought some naval bronze threaded pipping and put it in the salt water exhaust and since 1998, no corrosion.
Hampton Rubber Company - Home

They also sell seals and bearings for good prices.
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Old 03-22-2016, 07:41 AM   #11
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Raw Water Elbow

Thanks to all for the input. Looks like I'll be putting two bronze pieces together to replace the one stainless piece.

I still have one question though. Everything I am seeing is NPT. Is it pretty safe to assume my old sea strainer has NPT threads? Since I haven't removed the old part, I am not sure. And I don't really want to remove it until I have a replacement in hand.

Thanks, Mike


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Old 03-22-2016, 07:45 AM   #12
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Quote:
Originally Posted by sdowney717 View Post
I see your in Virginia Beach?
Call Hampton Rubber.
I bought some naval bronze threaded pipping and put it in the salt water exhaust and since 1998, no corrosion.
Hampton Rubber Company - Home

They also sell seals and bearings for good prices.

We are actually in Longboat Key, FL right now. We won't be back to Hampton Roads until late May/early June.


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Old 03-22-2016, 08:31 AM   #13
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Not surw what filter you have but Groco, Shurflo, Forespar etc are all NPT as standard. If you know your filter, Goggle should be able to tell you.


Just noticed it is a Bair. Sorry but I have never heard of them.
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Old 03-23-2016, 08:21 AM   #14
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Quote:
Originally Posted by HopCar View Post
All you need is a 1-1/2 to 1 inch bushing and a 1" male npt to 1" hose elbow.

Please forgive me for linking to my own website. You should be able to find these fittings at any marine store.

ACR Bronze Hex Bushings 1-1/2"

Perko Pipe Elbow Fitting 1"

Thanks Hop. That looks like the simplest solution. One more question...what is the right thing to use on the threads when I put it all together?

Mike


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Old 03-23-2016, 08:25 AM   #15
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Rectorseal No.5 thread sealant
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Old 03-23-2016, 08:57 AM   #16
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My favorite thread sealant is Leak Lock but any pipe dope will work.
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Old 03-23-2016, 09:18 AM   #17
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I just use quality pipe dope. If electrical continuity is important, pipe dope is better than Teflon tape. Teflon is OK on the potable water system.
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Old 03-25-2016, 07:56 PM   #18
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Thanks to everyone for the info.


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