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Old 13-06-2010, 02:04   #1
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Hose Clamps

Thought I might pass this along. I pushed the raw water inlet hose on my diesels pump inlet and was quite surprised when the clamp just broke in two. I had this particular hose clamp off a couple of months ago when I changed the pump impeller and it looked fine. Needless to say I am changing all my hose clamps. These clamps have only been in service a couple of years. Any suggestions as to the in use life of hose clamps?
This could have been a disaster if I had been entering or leaving my marina. It has a narrow entrance with breaking waves on either side. Not the place to have engine problems.

Red Horse
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Old 13-06-2010, 04:25   #2
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Hose Clamps should be:
For longevity:
- all 316 Stainless Steel or Titanium, including threaded worm bolt.
For Performance:
- smooth, pressed not perforated band body.
- rounded/rolled edges.

AWAB & ABA & Titan*make such clamps.
Titan Marine clamps are perforated.
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Old 13-06-2010, 05:27   #3
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To add to Gord's info , a magnet when buying S/S clamps may reveal that the worm gear is not good stainless.
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Old 13-06-2010, 06:14   #4
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Use two!

Glad you 'caught' it. Thats why its good to always have two clamps on each connection.
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Old 13-06-2010, 06:51   #5
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When we bought this boat and needed to zip the 10,000 N miles from the Caribbean back to australia we didn't have much money so the only spare hose clamps we could afford were normal galvanized one, or some cheap SS with steal screws.

We didn't need them and they are in a bag for emergency use.

There is such a vareity of hose clamps needed that I don't mind cheapies for an emergency supply.




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Old 13-06-2010, 06:58   #6
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I'm not intending on hijacking this thread, but its kinds the same subject.

We had some water coming into the bilges intermittently and I was stuffed if I could find the reason. (I think it turned out to be the shaft seal and greased it. I didn't know it had to be done.)

My question is: If you notice an intermittent puddle would you run round tightening all the hose clamps? Or would you leave them all as is till you definitely confirm which hose clamp is the culprit?


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Old 13-06-2010, 09:51   #7
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There is such a vareity of hose clamps needed that I don't mind cheapies for an emergency supply.




Mark[/QUOTE]

With you on that one Mark.
At every hull inlet on Bluestocking I have a tapered wooden plug, and on its tag line I have a correct size spare clamp. Any on-engine hoses are double clamped as a matter of course for my insurance company.
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Old 13-06-2010, 10:03   #8
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Quote:
Originally Posted by Blue Stocking View Post

, and on its tag line I have a correct size spare clamp. .
Thats a great idea!!!
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Old 13-06-2010, 10:09   #9
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More on this subject at Check Your 'Made in China' Hose Clamps !
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Old 13-06-2010, 10:38   #10
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Hose clamps should not be over-tightened; just tight enough to distort (compress) the hose some, but not tight enough to cut into it or strip the worm gear.

To prevent loosening, apply a little Blue Loctite (#242) on the worm gear.
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