* All KPMI Black Diamond Stainless steel valves are impregnated by a special German process to a depth of .002, with a surface buildup of .0002. This
* All KPMI Black Diamond Stainless steel valves are impregnated by a special German process to a depth of .002, with a surface buildup of .0002. This process improves wear properties, reduces friction, and provides resistance to corrosion and wear. Each valve is designed using Finite Element Analysis software, and profiles are tested on our computerized flow bench.Head Diameter: 1.610Stem Diameter: 0.3106Tulip: 25Overall Length: 4.510