[C320-list] Forespar thru-hull

[Jon Vez]

Marelube. Specifically designed be Forespar for their Marelon seacocks. A bit pricey, but a small tub will last forever.

Sent from my iPad

> On Sep 21, 2015, at 3:27 PM, John Meyers <jcmeyers7 at gmail.com> wrote:
> 
> What is the best lubricant for thru hulls? I heard something about silicone
> grease. I was going to give it a try after going on the hard. I would be
> interested is some experience from any of you.
> 
> AND I hear a challenge to some problem solving as to how to remotely open
> and close the cooling water thru hull.  It is time to enlist my engineer
> type son. If we come up with something I will let you all know.
> 
> John Meyers
> #406 Wind Chime
> Muskegon, MI
> 
> On Mon, Sep 21, 2015 at 3:08 PM, Chris Nichols <cinichols at btinternet.com>
> wrote:
> 
>> Funny thought perhaps but is it the same stiffness both opening and
>> closing?
>> When closing the valve there is likely little or no pressure differential
>> either side of the ball.
>> When opening, sometime later, there could be a difference and the ball
>> could be being forced into the housing by outside pressure which could be
>> making it stiffer. This would only happen if the water on the pipe side
>> within the boat were to be drained to below the waterline when the valve
>> was closed.
>> 
>> Chris
>> 
>> Sent from my iPad
>> 
>>> On 21 Sep 2015, at 19:56, Warren Updike <wupdike at hotmail.com> wrote:
>>> 
>>> My raw water thru-hull is very hard to operate, besides being located
>> under
>>> the aft berth. This past spring, I removed the top to access the ball and
>>> thoroughly lubricated it. After reassembling, it worked easily out of the
>>> water. Once in the water, it became hard to operate once again as though
>> I
>>> hadn't bothered to lube it. I've noticed this with the other valves as
>> well.
>>> Out of the water: no problem. In the water: stiff to operate.
>>> 
>>> Anyone have ideas or suggestions?
>>> 
>>> 
>>> 
>>> Warren and Pattie Updike
>>> 
>>> 1994 C320 "Warr de Mar" #62
>>> 
>>> 
>>> 
>>