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Old 30-12-2014, 17:25   #1
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Cross v. Multiple Tees?

I was wondering if I could get opinions on a plumbing issue on our Tayana 37.

We have a raw water thru-hull on the starboard side that goes off to four different locations (head, refrigerator, washdown pump, and saltwater under-sink foot pump). We are servicing the thru-hull and replacing all these lines as well as the fittings. Previously there were three pipe tees to allow for the hoses to the four locations. Is there any reason not to replace these three tees with a cross and tee, reducing the number of fittings (and cost)?

Thanks in advance.

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Old 31-12-2014, 04:41   #2
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Re: Cross v. Multiple Tees?

Groco also makes manifolds (RWM series & DM series)
GROCO - FITTINGS
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Old 31-12-2014, 05:46   #3
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Re: Cross v. Multiple Tees?

Thanks Gord. The RWM series looks like it would work, though I would prefer everything to be of the same hose size (3/4"). I will weigh that option.

I spoke to my surveyor last night (Phil Gaudreau of Connecticut...a great guy who has continued to help us now a year out from the survey), and he said there was no reason not to use the cross if I go that route.

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Old 31-12-2014, 06:46   #4
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Re: Cross v. Multiple Tees?

Definitely use the cross fitting. The less junctions between hoses and hardware, the better, since that's where leaks always seem to spring up.

The only reason I can think of to plumb it differently is if simultaneous flow to the fridge and wash down would be limited by the cross vs. take offs, and I don't think that's an issue here.
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Old 31-12-2014, 07:53   #5
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Re: Cross v. Multiple Tees?

Instead of a cross, why not use a side-outlet tee? One more way to be creative.
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Old 31-12-2014, 19:21   #6
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Re: Cross v. Multiple Tees?

The longer the assembly of plumbing parts the greater the potential for torque at the connection to the discharge valve. I recommend that you support the assembly with a bracket.
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Old 31-12-2014, 20:53   #7
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Re: Cross v. Multiple Tees?

Does someone make a bronze cross fitting? I have only seen them in galvanized or black iron pipe.
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Old 01-01-2015, 06:35   #8
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Re: Cross v. Multiple Tees?

Try these people. BRONZE PIPE FITTINGS
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