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Old 08-15-2014, 04:14 PM   #1
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sea water strainer

In my continuing saga of replacing my head hoses I had to remove my sea water strainer for the AC to gain access. It is a large strainer, brass/bronze I think, similar to what is on a lot of engine feeds. I want to clean it up while I have it out. I have seen many of these on vessels that have been detailed that look like they are brand new. I suspect they have been painted. It presently is a dull dark color. If I use a brass brush it cleans to a brass looking color. Is there a chemical that I should use to clean it? After it is clean should I paint it and if I should what kind of paint should I use? I really would like to get it looking new again. Thanks for your inputs...
Also is there a secret to getting the wire hoses off? It has been a crazy battle to remove them with wire cutters, screw drivers and so on.
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Old 08-15-2014, 04:24 PM   #2
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It should be bronze. They do turn a dark dull brownish green color after a while. If you want to clean them, I would use a ZEP product called BestStuff and a rag. A wire brush might leave unwanted marks. Hoses are another issue if they have been on a long time, and there is no easy way other than shutting the seacock and cutting them off.
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Old 08-15-2014, 04:32 PM   #3
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Soak it overnight in white vinegar. Cheap and effective.
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Old 08-15-2014, 04:33 PM   #4
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Or hit the hoses with a heat gun...as with all things, do not over do it.
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Old 08-15-2014, 06:56 PM   #5
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Scrub the strainer clean with degreaser than soak the strainer in any mild acid solution. The only way to keep it from turning green again, which is not a bad thing, is to either clean coat it or paint it. They look pretty sharp painted white.

As to the wire reinforced hose, a heat gun will do little or nothing as it does nothing to the wire. The quickest way to cut through wire reinforced hose is with a Dremel tool with a cut off disk attached to it. Cuts through the hose and wire like butter. Pop, pop, pop goes the wire and off comes the hose.
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Old 08-15-2014, 07:18 PM   #6
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Greetings,
The Dremel tool is a good idea but don't score the hose nipple/barb by cutting too deeply.
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Old 08-15-2014, 07:32 PM   #7
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Scrub the strainer clean with degreaser than soak the strainer in any mild acid solution. The only way to keep it from turning green again, which is not a bad thing, is to either clean coat it or paint it. They look pretty sharp painted white.

As to the wire reinforced hose, a heat gun will do little or nothing as it does nothing to the wire. The quickest way to cut through wire reinforced hose is with a Dremel tool with a cut off disk attached to it. Cuts through the hose and wire like butter. Pop, pop, pop goes the wire and off comes the hose.
===============================================

Uggggg....how about you try it before you discount the heat gun. It is far better to comment when you know your subject though I could barely understand you sitting down, your voice was so muffeled. I have used a heat gun as routine when on different occasions on air conditioner stuck raw water strainer hoses and barbs and they came right off. I should know having replaced/ repaired between 5 and 10 March raw water pumps. (Hate em). The wire is not the source of the friction or seal between the hose barb and the hose...think... the wire is internal, the seal and friction point is not the wire but the rubber contact between the barb and hose. Btw except from releasing the hose from the stuck hose barb, Cpt Bill, you were dead on...ya must have stood up.
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Old 08-15-2014, 08:03 PM   #8
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Two things:

1) Yes, a heat gun usually helps spread the heat around, don't just get one spot hot and be careful not to burn anyhing.

2) Go to your favorite auto parts or tool store and ask for a "radiator hose tool"

Heat your hose and wiggle it if you can, then stick the point of the tool between the inside of the hose and the fitting as far as you can and try to work it around the outside of the fitting/inside of the hose. Keep working it as much as you can while wiggling the hose. It's easier to do than to explain. The object is to break the seal between the hose and the fitting.

This is one of those processes that works better after you've done it a few times.

While you're at the auto parts store, pick up a small tube of "radiator hose grease". When it's time to reinstall the hose (used or new), smear a little of this grease on the outside of the fitting and the inside of the hose. This will make it easier to install and easier to remove down the road.
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Old 08-15-2014, 08:08 PM   #9
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Exactly....heat and twist, then probe and cuss...then cut and not grove the hose barb or you replace or leak forever.
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Old 08-15-2014, 08:14 PM   #10
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I can be a fanatic about certain things on the boat myself, but a strainer? I've spent I don't know how many hours trying to figure out why my upper helm joystick control for the spotlight doesn't work (when the lower helm control works just fine) - even though I almost never actually use the searchlight - but even if I were 19 again I don't think I'd have enough time in my life to dress up a strainer housing. But more power to you, to each his own.
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Old 08-15-2014, 08:22 PM   #11
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===============================================

Uggggg....how about you try it before you discount the heat gun.
You know what they say about assuming.

I have tried a heat gun. Didn't work well for me. But maybe I wasn't patient enough. The Dremel tool is very fast. Once I started using it I never bothered to pick up a heat gun again for wire reinforced hose.
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Old 08-15-2014, 08:29 PM   #12
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Exactly....heat and twist, then probe and cuss...then cut and not grove the hose barb or you replace or leak forever.
I guess you could cut through the nipple if you were very careless or a klutz. Have you tried it? Or are you now the one talking out his a$$?
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Old 08-15-2014, 08:29 PM   #13
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Surprisingly, a heat gun takes some practice to be effective. Most people either just heat one small spot or they give up before they have enough heat to do the job.
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Old 08-15-2014, 08:41 PM   #14
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:Bill stand up, can't understand you....how is that strainer detailing going...I understand plating is very effective over bronze...I suspect ya can really dress up a Perco or Groco strainer for a few $ 100's or so for chrome...now gold...well that is a different matter entirely...
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Old 08-15-2014, 09:23 PM   #15
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Quote:
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:Bill stand up, can't understand you....how is that strainer detailing going...I understand plating is very effective over bronze...I suspect ya can really dress up a Perco or Groco strainer for a few $ 100's or so for chrome...now gold...well that is a different matter entirely...
Bend down here and listen up..... gold's the best. But Alwgrip runs a close second.

Personally I prefer clean and a bit green. But it does dress up and engine room when all the strainers are nice and shinny white like the walls, engines, gensets, pump motors. etc., etc.

So tried the Dremel yet? My back is starting to get sore from being bent over waiting for your answer.
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Old 08-15-2014, 09:33 PM   #16
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Surprisingly, a heat gun takes some practice to be effective. Most people either just heat one small spot or they give up before they have enough heat to do the job.
I got tied of not being able to get it around much of the circumference of the hose when access to the hose was block by the engine, hull, stringer, etc.

Plus it's hot enough working down there most times. So I guess the added heat just cut my patience level back even more. So perhaps I said "screw this" to soon.

But the Dremel just makes very easy in my opinion.
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Old 08-15-2014, 10:14 PM   #17
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I guess you could cut through the nipple if you were very careless or a klutz. Have you tried it? Or are you now the one talking out his a$$?
I think Mule was referring to the risk of marking the barb along it's length if you use a cutter to split the part of the hose stuck onto the barbed nipple. He was not suggesting anyone would be dumb enough to cut hose and barbed nipple off at a swipe, I suspect. And it is tempting to help get the stuck part of the hose off, even after you've cut the hose away beyond the barb end, by doing a longitudinal (shallow) cut, but always there is the risk of it not being shallow, & cutting a groove into the barb which can then be a source of leak, however unlikely unless it is gouged really deep. I often thought of trying one of those hose remover things, but never did…could be worth having though.
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Old 08-15-2014, 10:51 PM   #18
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I think Mule was referring to the risk of marking the barb along it's length if you use a cutter to split the part of the hose stuck onto the barbed nipple. He was not suggesting anyone would be dumb enough to cut hose and barbed nipple off at a swipe, I suspect.
Yes that is what I thought he was saying. And no I did not think he was saying anyone would cut the nipple off along with the end of hose.
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Old 08-15-2014, 10:53 PM   #19
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Any suggestions about how to clean the clear plastic container that houses the strainer? Particularly removing barnacles? Can it be done without taking the thing apart? Howard
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Old 08-15-2014, 11:26 PM   #20
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"Any suggestions about how to clean the clear plastic container that houses the strainer? Particularly removing barnacles? Can it be done without taking the thing apart? Howard "

I'm sure you could get the barnacles out with acid based cleaner. Barnacle Buster is a chemical used to clean sea water systems that works well.
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