Groco full flow seacocks with tri flange base and ball-type valve. Bronze body with chrome plated solid brass ball contacting PTFE seats and seals. Rugged marine construction features stainless steel stem, handle and hardware.
Field reversible handle allows you to select the closed position orientation (clockwise or counterclockwise) that best suits the installation. Tri-Flange base and mount bolt pattern provide easy retrofit when replacing most popular brands. Bottom connections are NPS (straight thread); top connections are NPT (tapered thread); full pipe-size flow. Drain plugs on both sides for convenient winterization.
Note, if installing on USCG inspected vessels, select the Groco BV or SBV Series ballvalves instead to meet serviceable while installed CFR requirements.
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Seacocks & Ball Valves
What diameter are the bolt holes in the base of the flange? Do they vary based on the size of the seacock?
Depends on the size, either 5/16 or 3/8".
Is the measurement for these Seacocks ID or OD? My through hull fitting has an ID of 1 inch and an OD of 1 1/4 inches. I want to make sure I order the right Seacock to thread onto the through hull. Thank you - Wyeth
I checked this further and was told wrong on the previous answer. All pipe thread measures from ID. So a 1" ID thru-hull uses a 1" ID Seacock.
Hi Wyeth,Great question! I was confused myself! The size is for the nominal or ID of your through hull. For example our 3/4" through hull was actually 1 1/16" OD, but it fit the 3/4" groco seacock like a glove!Best of luck!
Pipe thread is measured from inside diameter for seacocks and outside diameter for thru-hulls so if your thru-hull measures 1 1/4 OD, you need a 1 1/4 seacock.
Karl - thank you for the quick and detailed response. I will go with the 1 inch for my 1 inch through hull. - Wyeth
Rick - thank you for the quick response. Wyeth
Hi I am trying to track down Groco service kits - but not having any luck. Don't seem to be able to find a contact for Groco direct. Any ideas?Thanks
I don't see a service kit for these, try Groco direct: 410-604-3800
What is the difference between a BV and a FBV seacock?
BV is made in USA FBV is NotBV has bronze handle, FBV has StainlessBV has stainless steel Ball, FBV has brass ball with chrome plateCheck out the Groco catalog online downloadable as PDF
The B V line have bronze handles and I believe are cast in the United States.The F B V Series have the traditional stainless handle and I believe they are made in China.I used the F B V series in my Valiant 37, and are very happy with them. I made backing blocks out of laminated stock, and coated them in epoxy resin to protect from moisture.
I have 10 FBV seacocks of which several were replaced by Groco in 2008 due to inferior materials. Now I have several more that the brass or bronze stem will swivel with no ball movement. I believe the housing castings are OK and would like to spare the task of removing the entire FBV and only replace the working parts (ball, seals and stem). I would carry replacement guts for 3/4", 1.25" and 2" Please advise?Bruce Kinsey
Thanks Steven. Any chance you have contact information for Groco. All I'm finding is sales agents.
They look like they could be disassembled, but I doubt it. I think this is something you'd have to ask Groco.
STEVEN MINNICH II
Bruce- Do you mean they were problematic Groco seacocks that Groco replaced, or inferior seacocks that you replaced with Grocos? I'll assume the latter: Everyone has their own comfort level, but I'd recommend you go the extra mile and replace the entire thing. Partly a compatibility issue. Partly because you never know what's lurking out of sight with an older or suspect or problematic fitting (or the metal it's made from) -- or any sealants or hull material around it. Once you've got the Grocos installed, I suspect they'll last longer than you or I will. I replaced my older through hulls and seacocks, etc., with Groco over the past few years. Lotta work but, I think, well worth it.
Really well made seacock.
I'm replacing all the seacocks on a Bristol 40, this one is for the head discharge. These are excellent seacocks, very well made, solid construction.
I installed this seacock and thru hull in my sail boat with little problems. This is a great unit. Sturdy and solid. Much better thah the flimsy plastic units found on many production sailboats. And it's cheaper. I used a 3/4" plywood backing plate between the seacock and the hull with ss bolts imbedded in the plate for mounting the seacock. The thru hull fitting screws right into the seacock sandwiching the hull and backing plate together for a firm water tight installation. It should out last me.
Very solidly built / excellent quality
I replaced a 36 year old thru-hull and gate valve set up with a Groco seacock and thru-hull. It is exactly what you would want in a seacock- solid, durable construction. If it installed itself it would be even better, but installation was a snap. I'd recommend taking the time to make a good backer plate. I fixed some brass nuts into a plywood disk with resin, then coated the whole disk to help prevent rot. On the advice of the boatyard, I Sikaflexed it in, rather than glassed it, as eventually the plate will need replacing (many years down the road). You get what you pay for with this product.
Whidbey Island, WA
the seacocks are great but not the hose.
all the seacocks I bought are great.The 2 inch hose I got aint what I ordered.--Very unhappy about that![...].I ordered a 2 inch ID shields Premium hose and got a cheap piece that is thin.