... valves) 2.Material:Silicone,FKM rubber,Fkm-silicone,NBR Duckbill Valve ItemDuckbill ValveBrandRAMISCountry of OriginXiamen, ChinaItem No.RS70110Opening pressure0.3-55kPaMaterial ... or one-way valves or check valves.Application Apply to Auto industry as fuel oil system,carburetor,Brake system.Medical Industry ... to ASTM, DIN, SAE,VDA6.1, UL, FDA, JIS . Duckbill valve