1.Make up:steel handle,brass body,brass ball 2.Medium:water,oil,gas 3.Certification:IS09001-2000 Model:JL-B1001Size:1/2"--2"Suitable medium:water/oil/gasWorking temperature:-20 to 180 degrees CelsiusThread type:F/F , BSPBody:brassHandle:steel/aluminium/iron handle with plastic coveredStructure:O-ringstructure and press nut structure are both available