... 6 7 8 9 101, Series code:KHB valve block type valve DN16-25,KHM oversleeve type valve DN32-50 2, Nominal Path: 16 20 ... 25 32 40 50mm3, SAE flange type4, Valve Body joint ... : steel5, Valve Body material: steel6. Valve body sealing:POM.7, Valve block and joint airproof: 4 FKM8, Flange Material: steel9, Handle type: 02-Aluminum ...