My 1974 35 MKII has Groco hull valves. My surveyor informed me that Groco bronze valves are high quality...problem I have is where they are located...very hard to get at so they don't see much action...mostly always open and I need to remind myself to check from time to time to make sure they are still operable
Dwight Veinot C&C 35 MKII, Alianna Head of St. Margaret's Bay, NS -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Martin DeYoung Sent: September 11, 2012 3:41 PM To: [email protected] Subject: Re: Stus-List Thru Hulls/seacocks Calypso's seacocks also seem to be custom, likely similar to the first C&C 61's built in 1970 and 71. They look like a bronze pipe with a round bronze handle that rotates a screw thread to lower a short (4" travel) tapered plug (flush to the hull when closed). I have serviced these twice which includes full disassembly, new gaskets (hand made), new packing on the shaft gland, water resistant lube on the threads, and coating the inside with Pettit's zinc Barnacle Barrier paint (salt water exposure, year round). There are no seals other than an interference fit at the taper. Operating this type of seacock is not easy, and they do not seal well. The seal is good enough to save the boat in case of hose failure, but not enough to allow a full shut condition for maintenance and leaving the boat unattended. I back up these seacocks (not the cockpit drains) with a marine ball valve which is easily opened and closed. One of these days I will wriggle my butt way back behind the cockpit and take a picture of Calypso's bilge pump discharge manifold. Some C&C fabricator must have been smoking something strong to come up with this piece of bronze art work. It accommodates 3 different inputs (one 3" dia. hose) and includes an anti siphon loop. When replacing Calypso's plumbing 10 years ago we considered replacing it with something less unique but ultimately decided it was a decent approach to the bilge pump discharge needs. Martin Calypso 1971 C&C 43 Seattle -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Graham Collins Sent: Tuesday, September 11, 2012 9:26 AM To: [email protected] Subject: Re: Stus-List Thru Hulls/seacocks I think C&C ran the plumbing differently each time! Mine is an '83 and has the presumably original Wilcox Crittenden tapered cone seacocks throughout - I've got 8 of the things in total. Up front I've got one each for the head intake, head outflow, and sink drain. These are all under the v-berth. My shower drain goes to a pump in the cabinet under the sink, then aft and up, exiting just under the toe rail midship. Both my bilge pumps run all the way to the stern, they are likely underwater a good % of the time but the hose run has a big upward bump section before they come back down and out, so little risk of reverse flow. No seacocks on these - they are inaccessible anyway. Graham Collins Secret Plans C&C 35-III #11 _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com [email protected] ----- No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2221 / Virus Database: 2437/5262 - Release Date: 09/11/12 _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com [email protected]
