On a past boat I had good luck with simply putting in the loop, and poking a very small hole in the top with a needle. If the needle is made to be red hot, it will melt instead of cut the hose and seal the edges.
The hole doesn't need to be very big to prevent a siphon. Yes, it is possible that when the pump is running that it may dribble tiny drops of water. Who cares...not me. Keep it simple....silly. -Keith M -----Original Message----- From: dre...@gmail.com [mailto:dre...@gmail.com] Sent: Wednesday, September 12, 2012 10:33 To: cnc-list@cnc-list.com Subject: Re: Stus-List Reverse Flow on Transom Bilge Outflow Hi, A loop is a good idea, a vented loop even better, but a cost effective solution would be to install a simple check valve. If it is installed down near an automatic pump, then you have the added benefit of the valve keeping the hose water from filling back into the bilge after the pump shuts off. I have also seen boats which use only one hose for both electric bilge pumps and deck mounted hand bilge pumps (like the Whale Gusher 10). That is, the electric bilge pump hose is routed to the hand pump and then out . This set up is nice as the hand pump acts like a check valve allowing water to flow only out, and it uses only one through hole. - Paul E. s/v Johanna Rose Carrabelle, FL On Sep 12, 2012, at 8:53 AM, cnc-list-requ...@cnc-list.com wrote: WE had a race years ago, where we sucked water into the manual bilge pump going 10+ kts downwind under the kite. Had to run the electric and hand pump to get the water to go back out again, made me think that you might need one of those vacuum breaks in the bilge pump outflow. Any lister tried those? ALEX GIANNELIA _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com
