You don’t actually need a check valve either. I know people who use a manual valve and run an extra hose all the way out of a thru-hull fitting. They adjust it for enough water flow to be visible like an outboard engine.
Joe Coquina C&C 35 MK I From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Dreuge via CnC-List Sent: Tuesday, January 30, 2018 11:41 AM To: cnc-list@cnc-list.com Cc: Dreuge <dre...@gmail.com>; Patrick Davin <jda...@gmail.com> Subject: Re: Stus-List Vented loop for engine above exhaust elbow? Patrick, Maine Sail, the guy from marinehowto.com<http://marinehowto.com>, recommends “ siphon breaks from the Scot Pump Company to be among the most reliable and trouble free of any I have used or worked on.” The Scott siphon break uses a stainless loop with the Westerbeke anti siphon valve made by MMD Powerline part # MMDW-44438. See: http://www.scotpump.com/#marketmarine http://www.betamarinenc.com/product/anti-syphon-valve/ On another note, while most wet exhaust vented loops are installed just before the exhaust mixing elbow, I have been told that a vented loop can(and should) be installed after the raw water pump and before the intake to the heat exchanger or engine. This way, the vented loop works with ambient temperature sea water and not engine heated hot sea water. - Paul E. 1981 C&C 38 Landfall S/V Johanna Rose Fort Walton Beach, FL http://svjohannarose.blogspot.com/ On Jan 29, 2018, at 7:38 PM, cnc-list-requ...@cnc-list.com<mailto:cnc-list-requ...@cnc-list.com> wrote: Date: Mon, 29 Jan 2018 12:50:39 -0800 From: Patrick Davin <jda...@gmail.com<mailto:jda...@gmail.com>> To: cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com> Subject: Re: Stus-List Vented loop for engine above exhaust elbow? Message-ID: <cahixy6rfql-arl4u5edbtpmtyn-_0uuoosupf4dlo6tbnz6...@mail.gmail.com<mailto:cahixy6rfql-arl4u5edbtpmtyn-_0uuoosupf4dlo6tbnz6...@mail.gmail.com>> Content-Type: text/plain; charset="utf-8" For those that have one, do you know what kind you have? Vetus makes a few - https://www.google.com/search?q=vetus+vented+loop - and there are the Forespar Marelon ones. I read some of the Vetus ones require running a vent line overboard or to a cockpit drain, or they leak water into the boat. Also where do you have it mounted / how high? My mechanic suggested mounting it as high as possible, which means running it up into the stbd lazarette. I'm hesistant about that because our lazarette is jam packed full while cruising (it's our only large storage space).
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