8" Zetkama Cast Iron Float Valve Flanged PN16 Angle Pattern. VS 5290This Zetkama Cast Iron Float Valve is a top of the line flanged angle pattern with a PN16 rating. It is designed to provide optimal control in a wide range of applications and is made of durable, corrosion resistant cast iron so it can handle long term use. The 8" size makes it ideal for most plumbing needs. Flanged PN16 Cast Iron Body & Bonnet Epoxide Float Brass Stem & Disc Angle Pattern. Rated PN10, Temperature 10C to 90C.