API603 Check Valves: 1/2" - 16" / Class 150 - 300 / PN16 / JIS10K API600 Check Valves: 2" - 36" / Class 150 - 2500 API602 Check Valves: 1/2" - 6" / Class 150 - 2500 Wafer / Spring / Return / 3PC Check Valves: 1-1/2" - 60"
3/8" DN10
3/4" DN20
20" DN500
24" DN600