... : 5-30MM 4.Opening presure:0.3-55kPa Silicone Umbrella Valve ItemSilicone Umbrella ValveBrandRAMISCountry of OriginXiamen, ChinaItem No.All ModelUmbrella O.D5 ... running as TS16949 management system and our products are produced according to ASTM, DIN, SAE,VDA6.1, UL, FDA, JIS . Umbrella Valve