1977 CS27 ~ Ravat
Join Date: May 2009
Location: Ontario, NY (PYC)
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Fitting to adapt 3/4 seacock to 1/2 hose?
I'm working on spec'ing out a total gate valve replacement on my CS27 with Groco flanged adapters. One of my through-hulls is a 1/2" raw water intake for my little Yanmar YSB8's water pump (1/2" hose). It's currently an in-line ball valve directly on a through-hull.
In looking at Groco's catalog, I noticed that they do not make seacocks or flanged adapters for a 1/2" through-hull, so I wrote to Groco asking what they suggest. Here's what I got back:
"Use a 3/4 seacock and thruhull, add a 1/2 x 3/4 bushing on the top of the seacock, then a pth-500 hose barb"
So, I get the part about moving from 1/2" to 3/4" on the through hull and flanged adapter. No problem. But does anyone know what a "1/2 x 3/4 bushing" fitting for a seacock would be? I can't find a Groco fitting, or anyone else's in the marine catalogs that matches this suggestion.
I don't want to make the mistake of ordering a household grade adapter, so I'm trying to find a marine supplier. Can anyone identify this part, or point me to a link / supplier to check with? Or for that matter, I'm open to other suggestions.
CS27 #1254 ~ Ravat
PYC, Lake Ontario
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