... material of PVC2)Size: 1/2'',3/4'',1'',1--1/2'',2'',3'',3--1/2'',4''3)Many color available you can choice, for ... example, grey, blue, white and etc.4)Connector type ... regular operation, open and close quickly, lightweight.3)The fluid resistance is small.4)No vibration, and no noise.5)Each valve ...