[C320-list] Another head question

[Darrell]

Thanks Gary, from the recent replies, I would agree that my current head 
plumbling actually occurred outside the factory and that is why it is such a 
shambles, Darrell #88
----- Original Message ----- 
From: "Gary Malcolmson" <gary at dupreeinc.com>
To: "C320-List" <c320-list at catalina320.com>
Sent: Monday, January 15, 2007 10:30 AM
Subject: Re: [C320-list] Another head question


> Here's something to consider.  When I purchased our C310 new in Nov-2002, 
> there was no direct head discharge out of the boat as it came from the 
> factory  The dealer was going to install the plumbing (including a 
> separate thru-hull) to allow direct discharge from the head if so desired. 
> Personally, for the way we use the boat I opted to not install that (thus 
> as it came from the factory so that the head can only discharge into the 
> holding tank--and the holding tank can be pumped out via deck fitting, or 
> can be pumped overboard via macerator pump).  I don't know if the dealer 
> was going to install a vented loop; but if the head were connected to an 
> open thru-hull then, by all means, there should be a vented loop unless 
> you like to gamble (personally I wouldn't-I don't have that kind of 
> luck!).
>
> I say all of this because it may be standard practice for Catalina Yachts 
> to leave this up to each individual dealer and their negotiations with the 
> first buyer.  Hence, you may find everyone's setup is not consistently the 
> same.  I'd bet there are a lot of variations in this area of each 
> individual boat.
>
> Happy Sailing,
> Gary Malcolmson
> C310 #230 "Rhythm"
>
> T. Scott Thompson wrote:
>> According to Nigel Calder's book you should have an anti-siphon loop on 
>> the output side of the head if you are connecting to an overboard 
>> discharge.  He suggests one that vents vertically through a hose.  The 
>> reason there is no such provision on most 320's is that most 320's do not 
>> have a Y valve for direct overboard discharge, I suspect.  Were these 
>> ever installed by the factory?  My boat has none.
>>
>> Scott Thompson
>> Surprise, 653
>>
>> Darrell wrote:
>>> I am curious why if there is an anti siphon loop on the head intake hose 
>>> why there isn't one on the head output hose, couldn't the same thing 
>>> occur if you had the Y valve switched to pump directly overboard and you 
>>> left the thru hull open . I don't think I would trust the flapper valve 
>>> in the head to prevent the toilet from flooding.
>>>
>>> Darrell, #88
>>
>>
>>
>
>