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05-08-2014, 07:27 PM
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#1
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Guru
City: Beaverton, Ontario
Vessel Name: Looking Glass
Vessel Model: Carver 370 Voyager
Join Date: Nov 2012
Posts: 1,240
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Should I be surprised??
One of the projects on my list before splash this spring was to install a Perko raw water strainer since the Volvo plastic basket strainer is not transparent and must be disassembled to see that it has nothing in it. Since all the hoses on the boat were replaced by the PO as a requirement of the insurance company due to the survey when he purchased her, I thought this would be straight forward. One thing that I did notice was that there were only single clamps on all fittings below the water line and that all clamps were perforated. Since I was going to add a clamp anyway I would change them to non perforated and double up. Well when I took off the raw water hose much to my surprise was a pipe nipple not a hose barb and not long enough for a double clamp. I mentioned this to the marina mechanic and he indicated that this was very common in older boats. Well I fixed it regardless. Are there any other issues in older boats that may have been ok at the time but not acceptable in this day and age??? Would this worry you?
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Allan
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05-08-2014, 07:36 PM
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#2
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Guru
City: Hailing Port: Charleston, SC
Vessel Name: Moonstruck
Vessel Model: Sabre 42 Hardtop Express
Join Date: Nov 2008
Posts: 8,276
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I see no bonding of the fixture. I suppose you are in freshwater in Ontario. Probably not as important there. Did I miss something?
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05-08-2014, 07:42 PM
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#3
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Guru
City: Beaverton, Ontario
Vessel Name: Looking Glass
Vessel Model: Carver 370 Voyager
Join Date: Nov 2012
Posts: 1,240
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Quite the norm in fresh water Don. Does not seem to be an issue. The fittings are all original 1981 and appear to have no degradation.
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Allan
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05-08-2014, 07:59 PM
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#4
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Enigma
City: Slicker?
Join Date: Oct 2007
Posts: 16,566
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Greetings,
Mr. L. I see no issues with the original install but your fix is probably better. Is the hose nipple bronze?
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RTF
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05-08-2014, 08:07 PM
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#5
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Guru
City: Longboat Key, FL
Vessel Name: Bucky
Vessel Model: Krogen Manatee 36 North Sea
Join Date: Oct 2009
Posts: 5,196
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Agree with RTL. At least half of my below-waterline fittings aren't long enough for double clamps, but I do use the best quality clamps I can get. I like your fix......good idea.
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Larry
"When life gets hard, eat marshmallows”.
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05-08-2014, 08:24 PM
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#6
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Guru
City: Beaverton, Ontario
Vessel Name: Looking Glass
Vessel Model: Carver 370 Voyager
Join Date: Nov 2012
Posts: 1,240
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Quote:
Originally Posted by RT Firefly
Greetings,
Mr. L. I see no issues with the original install but your fix is probably better. Is the hose nipple bronze?
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Yes RT, the nipple is bronze thank goodness. It never let go but I was scared that the sharp threads would cut the inside of the hose.
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Allan
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05-08-2014, 08:31 PM
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#7
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Guru
City: Powell River, BC
Vessel Name: Northern Spy
Vessel Model: Nordic Tug 26
Join Date: Feb 2012
Posts: 4,075
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Hoses clamped to pipe nipples was (is still) a common poor practice. Not the best clamping surface for the hose. I found it on my 1981 vintage boat as well.
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05-08-2014, 11:22 PM
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#8
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Guru
City: Miami Florida
Vessel Name: Possum
Vessel Model: Ellis 28
Join Date: Aug 2011
Posts: 5,308
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It looks like you did a nice job.
"It never let go but I was scared that the sharp threads would cut the inside of the hose."
I'll admit to using a pipe nipple instead of a hose barb in the past, but I've always used a longer nipple and cut the threads off the end. The hose is clamped onto the smooth side of the nipple with two clamps and I've never had one come off. Yes a hose barb is preferred but sometimes you just can't find the right size and this does work well at the typical low pressures found boat water systems. Don't think I'd do it on the high pressure side of a water maker.
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05-08-2014, 11:45 PM
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#9
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Guru
City: Port Townsend
Vessel Name: The Promise
Vessel Model: Roughwater 35
Join Date: Sep 2012
Posts: 1,569
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Is the barb you installed bronze or brass? I ask cause it looks like brass.
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05-09-2014, 05:13 AM
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#10
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Enigma
City: Slicker?
Join Date: Oct 2007
Posts: 16,566
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Greetings,
Mr. d. Post #6.
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RTF
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05-09-2014, 06:08 AM
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#11
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Guru
City: Beaverton, Ontario
Vessel Name: Looking Glass
Vessel Model: Carver 370 Voyager
Join Date: Nov 2012
Posts: 1,240
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Quote:
Originally Posted by dhmeissner
Is the barb you installed bronze or brass? I ask cause it looks like brass.
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Bought through a marine supply and was told that it is bronze and the literature on line was quoted as bronze as well.
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Allan
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05-09-2014, 10:07 AM
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#12
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Guru
City: Concrete Washington State
Vessel Name: Willy
Vessel Model: Willard Nomad 30'
Join Date: Oct 2007
Posts: 18,743
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HopCar wrote;
"I'll admit to using a pipe nipple instead of a hose barb in the past, but I've always used a longer nipple and cut the threads off the end. The hose is clamped onto the smooth side of the nipple with two clamps and I've never had one come off."
I agree but I'd like something that's bigger on the end that will stop the hose clamp from sliding off. With good clamps, low pressure and regular maintenance that should be an OK to good hookup.
What are the hose fittings that just have a bump at the end called ... bib?
I much prefer them to the typical mufti-barbed fitting.
__________________
Eric
North Western Washington State USA
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05-09-2014, 10:48 AM
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#13
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Guru
Join Date: Dec 2007
Posts: 4,021
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Our 86' Nova sundeck has a receptacle on the fly bridge with both AC and DC. The feeds come from the same terminal block. Of course there is no color coding on the whole boat, except for the engines. In the event of a ground or a short it is far easier to just run new wiring than try to find the fault.
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05-09-2014, 12:14 PM
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#14
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Guru
Join Date: Apr 2014
Posts: 1,288
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When it comes to old through hull fittings (in salt water) my first choice is replacement with something like Forespar black plastic units. No corrosion no grounding and like your body if exercised a little they work fine.
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05-09-2014, 01:25 PM
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#15
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Guru
City: Venice Louisiana
Join Date: Dec 2013
Posts: 1,097
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Maybe the reason it is not corroded is because it was not "bonded". Fresh or salt, its all conductive.
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05-09-2014, 04:04 PM
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#16
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Guru
City: Miami Florida
Vessel Name: Possum
Vessel Model: Ellis 28
Join Date: Aug 2011
Posts: 5,308
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Eric, I know the type you're talking about but I don't think I've ever seen them in bronze. Back in my ill spent youth when I was playing with little airplanes we used aluminum versions of what you describe. You're right, a bronze one would be very nice in an application like the OP has described.
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05-09-2014, 04:19 PM
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#17
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Guru
City: Powell River, BC
Vessel Name: Northern Spy
Vessel Model: Nordic Tug 26
Join Date: Feb 2012
Posts: 4,075
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Quote:
Originally Posted by HopCar
Eric, I know the type you're talking about but I don't think I've ever seen them in bronze. Back in my ill spent youth when I was playing with little airplanes we used aluminum versions of what you describe. You're right, a bronze one would be very nice in an application like the OP has described.
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That would be called a beaded hose barb.
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05-09-2014, 04:40 PM
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#18
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Master and Commander
City: Vallejo CA
Vessel Name: Carquinez Coot
Vessel Model: penultimate Seahorse Marine Coot hull #6
Join Date: Sep 2010
Posts: 12,559
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LaBomba, what is your procedure for cleaning out the raw water screening? Haven't seen the need yet, but it's obvious on my manifold. (Since I've a single engine, no genset, nor raw-water washdown, two of three inlets aren't used.)
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Kar-KEEN-ez Koot
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05-09-2014, 05:04 PM
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#19
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Guru
City: Here
Join Date: Sep 2012
Posts: 2,940
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That barbed fitting looks more like brass than bronze which is not a good mix on a bronze throughull due to galvanic potential and its very likely that the valve is NPT while your barbed fitting is NPS which means it is probably only on there by 3 threads and there is no backing plate under the seacock.
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05-09-2014, 05:59 PM
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#20
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TF Site Team
City: California Delta
Vessel Name: FlyWright
Vessel Model: 1977 Marshall Californian 34 LRC
Join Date: Apr 2008
Posts: 13,728
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Quote:
Originally Posted by boatpoker
That barbed fitting looks more like brass than bronze which is not a good mix on a bronze throughull due to galvanic potential and its very likely that the valve is NPT while your barbed fitting is NPS which means it is probably only on there by 3 threads and there is no backing plate under the seacock.
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Quote:
Originally Posted by LaBomba
Bought through a marine supply and was told that it is bronze and the literature on line was quoted as bronze as well.
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Hard to tell from an internet photo, but LaBomba confirmed it was bronze.
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