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Old 01-08-2017, 02:47 PM   #1
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Please identify this fitting

This is a photo of the fitting at the top of the raw water loop between the transmission cooler and the exhaust mixing elbow. The small hose appears to be some sort of "piss line" connected to the lift muffler. I have not been able to identify the type of fitting as I cannot locate it on either the "Western Marine" or "West Marine" websites. I suspect that it might be brass rather than bronze.

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Jim
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Old 01-08-2017, 02:53 PM   #2
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It's a brass 90 Female on at least one side

Cant tell the thread size, and cant tell if the part coming out the bottom is a male thread or a female thread and a straight nipple.

So... It could either be a 90 which would have two FPT, or a "street 90" which would have one MPT and one FPT

The top is a male thread hose barb.
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Old 01-08-2017, 03:00 PM   #3
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Quote:
Originally Posted by JDCAVE View Post
This is a photo of the fitting at the top of the raw water loop between the transmission cooler and the exhaust mixing elbow. The small hose appears to be some sort of "piss line" connected to the lift muffler. I have not been able to identify the type of fitting as I cannot locate it on either the "Western Marine" or "West Marine" websites. I suspect that it might be brass rather than bronze.

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Jim
Can`t help with ID unfortunately, but keen to know what the small black pipe does (a piss line???)
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Old 01-08-2017, 03:04 PM   #4
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Greetings,
Mr. Bb. I suspect a "piss line" is any hose/pipe that is not meant for a constant flow of liquid but simply to drain an occasional flow like an AC drain. My guess anyway...
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Old 01-08-2017, 03:05 PM   #5
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Is it some kind of siphon break?
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Old 01-08-2017, 03:06 PM   #6
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Go to Grainger. Search extruded female tee in brass fittings. You will find a picture of one there. I wonder if the small line is intended as a siphon break for the loop.
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Old 01-08-2017, 03:16 PM   #7
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If the fitting is supposed to act as a siphon break, the vent isn't supposed to go down. It's supposed to be horizontal out the side of the boat or up. Best to read up on lift mufflers and siphon breaks. Think Tony Athens probably has a good explanation on his site.

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Old 01-08-2017, 03:16 PM   #8
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Please identify this fitting

Quote:
Originally Posted by BryanF View Post
Go to Grainger. Search extruded female tee in brass fittings. You will find a picture of one there. I wonder if the small line is intended as a siphon break for the loop.

Thanks! That's what I was looking for. Thanks for the quick response gentlemen!

https://www.grainger.com/product/PAR...ale-Tee-13Y898

The main lines connect using 2 X 90 degree threaded elbows with hose barbs. Not sure if these are brass or bronze.

The smaller line connects with a reducer and an elbow. I'm not sure about the type of brass here.

Should I be concerned with the use of brass here?

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Old 01-08-2017, 03:17 PM   #9
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Jim,
Suggest maybe Greenline Hose and Fittings can help. They are in Delta on Annacis Island.

Catalog reference
https://www.greenlinehose.com/content/7.Brass2016.pdf
look at page 6 or 7
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Old 01-08-2017, 03:21 PM   #10
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Thanks Tolly. Greenline is a great place and have helped me in the past with propane fittings, etc. For now, I just want to understand what I have and perhaps the length of it's useful life expectancy.
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Old 01-08-2017, 03:24 PM   #11
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You should be able to buy all that stuff at any good hardware store.

It's looks like nothing but a T, a street L and some hose barbs.
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Old 01-08-2017, 03:37 PM   #12
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It is a plain old brass T that is used for a siphon break I would think.


It is fine being brass ass it is not under water or holds any pressure...so when it leaks in 40 years, $10 from Home Depot and you are back at it. The thinner brass nipples will probably go first which I think would be a bigger issue but I would just hit the assembly every year pretty hard and if it stays intact...probably good for another one. Sounds crude but the other solution is go plastic or bronze.

I spent $60 on a Vetus setup...but woulda, coulda been happy with a Home Depot home made one.


Mine really is only a vent, no anti siphon valve in it....just a T. That way salt build up wouldn't possible create a siphon and ruin your engine.
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Old 01-08-2017, 03:38 PM   #13
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Quote:
Originally Posted by O C Diver View Post
If the fitting is supposed to act as a siphon break, the vent isn't supposed to go down. It's supposed to be horizontal out the side of the boat or up. Best to read up on lift mufflers and siphon breaks. Think Tony Athens probably has a good explanation on his site.

Ted

Yes, I am working through some of this. I'm not sure why the OP followed this approach.

Jim
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Old 01-08-2017, 03:45 PM   #14
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Yes, I am working through some of this. I'm not sure why the OP followed this approach.

Jim
Jim: If it's any help, I was on another KK42 which has American Diesel's replacement for the Ford Lehman installed. It was plumbed the same as yours with the top of the loop plumbed into the water lift muffler. Have you called AD or Krogen?
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Old 01-08-2017, 03:49 PM   #15
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Jim: If it's any help, I was on another KK42 which has American Diesel's replacement for the Ford Lehman installed. It was plumbed the same as yours with the top of the loop plumbed into the water lift muffler. Have you called AD or Krogen?

Hmmm! No, I'm just starting to work through this.
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Old 01-08-2017, 06:26 PM   #16
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I have a similar fitting on a Westerbeke genset exhaust system. It exits just above the water line. I was told it served as a "teltale" in that you can hear it from the cockpit pouring exhaust water overboard, letting me know that the impeller is doing its job. The exhaust exit is beneath the swim step and its hard to see cooling water coming out.
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Old 01-08-2017, 06:39 PM   #17
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Where this one is...from the photo...pretty sure it is a siphon break...

Pissing water may or may not happen based on flow and hose sizing.
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Old 01-08-2017, 06:45 PM   #18
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Yes, I am working through some of this. I'm not sure why the OP followed this approach.

Should be "Previous Owner", not "OP".
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Old 01-08-2017, 06:55 PM   #19
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Is there anything wrong with the one now?
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Old 01-08-2017, 07:25 PM   #20
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I think siphon breaks need a one way valve to function well (lets air in one way, closes if any water pressure the other way). This is the one on my boat

Edit: PS: This little piece of plastic lasted 27 years before I replaced it
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