and plastic seacocks don't go together, but perhaps someone else has had this experience?
I am posting
this in the hope that it will not
reanimate any discussion of Marelon vs bronze
as a seacock material. The Marelon valves on the boat
have worked well except for an occasional pulse of water
at the handle when operated.
While trying to fix a slight drip from one of these valves by gently tightening the four SS through bolts that hold the valve together, one of the bolts broke off cleanly at the head
. Since it broke before I had a chance to apply any torque to it at all, I suspect crevice corrosion
. The bolt is marked F593C which is 304 stainless steel
The eight Marelon OEM 93 series valves are 12 years old. Forespar advised that the valve needed to be replaced and shipped me a replacement which I will install shortly. I am going to check the bolts on all other valves as well.
I am wondering if anyone else had this experience or whether it is particular to my application?