Bavaria seacocks

The usual reasons given (materials aside) are that it's more laborious to close, not easy to tell at a glance whether it's closed or not, and susceptible to trapping debris which prevents complete closure.

That's my point. You didn't quote JumbleDuck, you quoted me. And which part of "intrinsically" don't you understand?
Have a good day
 
Not Yanmar but the boatbuilder - agree totally gate-valves have no place in any marine application. In fact they're a menace in household plumbing and I've gradually replaced all mine with ball-valves.

I believe that the raw water inlet valves on saildrives, which are integrated into the top of the gearbox, are part of the Yanmar / Volvo assembly.

Richard
 
My boat is twenty years old and I've decided to replace all through hull fittings, ball valves and hosetails with bronze and DZR. I've no idea if I am wasting my money or not but I'm in to prophylactic maintenance so here we go. The existing fittings are brass, as confirmed by Nauticat and Hogfors (the valve manufacturer) and maybe I'm one of natures worriers, but I will rest easier in the knowledge that it's done. I intend destructively examining the old fittings when they are out of the boat, I will report back my findings.

I replaced all my underwater ones at 26 years old as suggested by surveyor the year before, although they had all passed the hammer test then. One through hull broke up when being removed.

I find it hard to understand the attitude of some people who will spend a thousand or two on electronics without batting an eyelid but won't spend a hundred or two on something which has the potential to sink the boat with, under some policies, the possibility of no insurance payout.
 
I find it hard to understand the attitude of some people who will spend a thousand or two on electronics without batting an eyelid but won't spend a hundred or two on something which has the potential to sink the boat with, under some policies, the possibility of no insurance payout.

And yet you waited a year after your surveyor's recommendation? :rolleyes:
 
And yet you waited a year after your surveyor's recommendation? :rolleyes:

As I said, they passed the hammer test so were not snagged on survey, it was a verbal suggestion that at (then) 25 years, it may be a good idea to replace them.

His advice proved correct in the case of one 38 mm through hull. Around the same time, another guy who had just launched his Beneteau had a hose tail fail underway and after haul out (again) a second one broke when he gave it a knock. All his were brass but I don't know the age of boat.
 
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