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  Topic Review (Newest First)
02-04-2014 08:45 PM
Re: Head hoses


Thanks for the question since I'm about to rebuild mine next week. Adding to your request, can anyone advise where I can get a rebuid kit for the standard head. I believe I need a Wilcox Crittenden Headmate 1460, Maintenance Kit, (#37072) send an e mail if you can help.
08-07-2013 03:24 PM
Re: Head hoses

PVC Schedule 80 Pipe is for pressure applications, and has a thicker wall than Schedule 40 pipe. PVC Schedule 80 is highly durable, with high tensile and impact strength. It has better sound deadening qualities than PVC and ABS Foam Core pipes. Installation requires the use of primer and solvent cement.
I believe that if any rigid pipe is used, it should also be isolated from shock and stress by using adequate support, and flexible pipe (Trident 101/102) between the pipe, and any fixture mounted to the vessel (deck plate, holding tank, head, etc.).
08-07-2013 03:10 PM
Re: Head hoses

Originally Posted by Minnewaska View Post
Rigid piping is generally considered poor practice, as it may crack under stress, heat, pounding, etc. There are some advocates that disagree with this.
ABS domestic waste pipe. 15 years through all of the Great Lakes, the Gulf and the Bahamas, absolutely no smell, no leaks, no problems .... hard to argue with.
08-07-2013 02:41 PM
Re: Head hoses

Rigid piping is generally considered poor practice, as it may crack under stress, heat, pounding, etc. There are some advocates that disagree with this.
08-07-2013 11:36 AM
Re: Head hoses

"...if you have a straight run" Ahhhh...there's the issue on my boat. I might have close to a straight run from the thru-hull to the head, but I'm not sure I have many other straight runs.
08-07-2013 10:25 AM
Re: Head hoses

PVC works fine if you have a straight run. You can use hose on the curves but you have to get creative to transition from PVC to hose.
08-07-2013 10:21 AM
Re: Head hoses

I'm surprised rigid PVC isn't used (like in a house). Is there a reason? Too much stress on the joints from when the boat moves?
08-07-2013 10:05 AM
Re: Head hoses

Originally Posted by Maine Sail View Post


Trident #148
Trident #140
Shields #144
Shields #148
Clear PVC Anything
I gotta ask about the last one... Please tell me that you have never come across this.
(There are some things should just not be seen, and once seen, cannot be unseen)

FWIW - I re-plumbed all the hoses with my VacuFlush system last year to eliminate all low spots where effluent could sit in the hose or pipe. There was a dip between the holding tank and the pumpout fitting where the yard that did the install used 5 extra feet of the Dometic PVC hose, rather than cut 2 2" holes through 2 bulkheads. Despite rinsing after every pumpout, effluent and water would remain in this dip, and it was the source of "that smell."

I used a combination of Sched 80 PVC, and Trident 102. I believe that the Trident 102 is cheaper than the Dometic flexible PVC.
08-07-2013 01:53 AM
Re: Head hoses

Maine Sail, thanks, that was perfectly timed!
08-07-2013 01:50 AM
Re: Head hoses

Originally Posted by deniseO30 View Post
Did not see the non GFI outlet above the head. (goes back under rock)
It's in the galley. Thanks for the concern!
This thread has more than 10 replies. Click here to review the whole thread.

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