Subject: ANTI-SIPHON Valves in Head cabinet
Message:
There are 2 Anti-Siphon Vents in the Head main cabinet.
One is for the raw water intake for the Head.
Can anyone tell me what the 2nd is for?
Bruce Stanley / C36 #2282/Fin / In-Mast
Sydney Australia
PS .. the manual I have does not show a 2nd one.
Hi Bruce,
The second is likely for the shower sump discharge if it has ½" or ¾" hose on it.
Tom & Janis Grover
C36 #0949
SR/WK, M25XP
Midland, ON
I don't know details of the anti-siphon, but I can tell you that in my 2004 model the seacock of the head is shared by both the sink and by an anchor washdown pump. The shower sump has it's own seacock with nothing else on it.
Greg Jackson
SV Jacqui Marie
2004 C36, MKII
tall rig, wing keel,
Thanks tom
Sounds correct to me will test
Cheers from downunder
B
On my 2004, two sea cocks and three services. Head intake, sink drain, and shower drain. The head intake and the shower drain have vented loops because the hoses provide a circuit where both ends of the circuit are at or below the water line. That's the general rule of using a vented loops.
Technically, I would have liked Catalina to eliminate one of those sea cocks by overboarding the shower drain via a simple thru-hull far above the water line (like the sump pump does).
Nick Caballero
Retired C36/375IA Mk II Technical Editor