... 3 ISO 9001-2000 4 OEM 5 SMALL ORDER SpecificationsButterfly Valve Rubber Liner Part 1)Tested for quality 2)Highly efficient ... 3)Less wear and tear 4)High performanceButterfly Valve Rubber Liner PartWe can develop many materials for specific ... valve applications.MaterialNBR,EPDM,NR,CR,SI,FPM,PTFE etc.FinishmouldingColorsBlack, ...