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				Replacing gate valves with ball valves
				Posted: Mon Nov 17, 2014 10:17 am
				by balthaus
				So one of my winter projects will be replacing the old gate valves with ball valves.
I have a few questions For those that have done this.
Can I just replace the valves or do I need to replace the thru-hulls as well?
What is a quality brand of ball valve?
			 
			
					
				Re: Replacing gate valves with ball valves
				Posted: Mon Nov 17, 2014 2:44 pm
				by bill
				 
 
I used a brass ball valve when I changed out my old gate valves
but if you what the best then go for it. 
 https://assuredautomation.com/21/?p=buy
 
https://assuredautomation.com/21/?p=buy
a bit of over kill. 
 
 
These are stainless steel with latching lever handles. 
 
 
I used my old thru-hulls as they were in good condition 
 
  
bill
 
			
					
				Re: Replacing gate valves with ball valves
				Posted: Mon Nov 17, 2014 10:02 pm
				by Rockit
				I'm with you.  I do not like gate valves.  I think there only one left in my house--one I have not gotten around to replacing yet!  I could not imagine keeping them in the boat.
In the "may as well" theme, while you are ordering parts and doing work you may want to consider this:
http://www.groco.net/SVC-MAN-07/Sec4/PDF/SSC.pdf
They are on the engine through hulls on my 28.  To winterize I used the adapter to hook up a short section of garden hose that I inserted into a five gallon bucket fed by a garden hose and when it was clear the thermostat was open, I turned off the city water and substituted antifreeze.  After the antifreeze was coming out the exhaust, I turned off the gas and started fogging the engine until it quit.
So for a few bucks more,  you get this setup.
Of course if you replace the whole unit with bronze or stainless, you need to isolate it from the hull.
Good luck.
Joe
 
			
					
				Re: Replacing gate valves with ball valves
				Posted: Thu Nov 20, 2014 12:26 pm
				by bruegf
				I'd use Marelon seacocks.  You should never use gate valves or ball valves, only seacocks.
http://www.pbase.com/mainecruising/seacock_primer
Fred
 
			
					
				Re: Replacing gate valves with ball valves
				Posted: Thu Nov 20, 2014 7:34 pm
				by balthaus
				Fred
Thanks for that link. I believe I have seen that before.
I will check in to the Marelon
			 
			
					
				Re: Replacing gate valves with ball valves
				Posted: Fri Nov 21, 2014 8:43 am
				by bill
				
Thanks Fred,
Great article on seacocks. 
 
 
bill