1.Material:brass 2.Specification:1/2",3/4",1",1-1/4",1-1/2",2-1/2'',3'',4'' 3.High precision, beautiful appearance 1.Material: brass2.Nominal pressure: 1.6 MPa 3.Work medium: water,oil or gas4.Working temperature: 0°C-100°C and above 5.Open pressure: 0.01 MPa6.Mainly used in the pipeline system to prevent medium flow back7.The valve has high precision, beautiful appearance and small modelling, ...