1.stem:plastic,metal 2.dosage:25ul,50ul,75ul,100ul,120ul, ... :tinplat ComponentPart No.Part Descripion1.Mounting Cup1-F2Plain tinplate,with down dimples2.Outer Gasket1-G1Bunna3.Inner Gasket1-B8Buty(U-133)4 ... .Stem Single Orifice 1×Φ0.020''(1×Φ0.51mm) Natural5.Sring1-C1Stainless steel6.Housing Metering Valve ...