DEfective Seacocks

[HopCar]

I received a reply from Perko on their ball valve materials.
The ball is acetal plastic and the stem is brass-C3600.

 

[HopCar]

Apollo Conbraco replied.

The stem is a wetted part and is made of silicone bronze.

Tony Helms
Tech Support Manager
Conbraco Ind. Inc.

It looks like Apollo is the only one of the companies that we've looked at that uses a bronze stem.

That said the only ball valve type seacocks I've seen with a broken stem was a few 2-1/2" Apollo seacocks and that was many years ago.

In the real world the brass stems don't seem to be a problem.
I would be glad to put any Groco, Apollo, Buck Algonquin or Perko seacock on my boat.

 

[Brooksie]

I received a reply from Perko on their ball valve materials.
The ball is acetal plastic and the stem is brass-C3600.

WTF, I got a different answer...

Hello,
The material for the ball is Acetel Poly plastic
The stem is made of cast bronze
Regards,
Manny Apaza
mapaza@perko.com

 

[HopCar]

Strange. C3600 seems to be one suppliers part number for C36000 brass.
C36000 brass is about 62% copper and 35% zinc plus some lead, iron and other stuff.