Noeta wrote:

Have a question about my head:

I have a Groco HF in my Catalina 34. It fills when the through hull
is left on.

I've rebuilt the head. Also installed new hoses and an anti-siphon
valve. The system is set up: Through hull intake to pump to Siphon
valve to bowl.

How high above the bowl is the vented loop (anti-siphon valve)?

Does the bowl fill at the dock or an anchor when the boat is at rest, or
only when underway on the same tack as the intake thru-hull?

Still, the bowl fills if the switch is left in the flush position. I
thought a an anti siphon valve would stop that.

What am I missing here?

I'll know when I have the answers to those questions.


--
Peggie
----------
Peggie Hall
Specializing in marine sanitation since 1987
Author "Get Rid of Boat Odors - A Guide To Marine Sanitation Systems and
Other Sources of Aggravation and Odor"
http://shop.sailboatowners.com/books...ku=90&cat=1304