... Worm Gear,Electric,Pneumatic Carbon Steel Worm Gear Orbit Rising Stem Ball Valve1.Size:2"-24"2.Pressure:Class150-6003.Operator:Worm Gear,Electric,Pneumatic4.Design and ... 7.Temperature Ratings: ASME B1 6.34 8.Inspection and Test: API 598. API, 6D 9.Anti Static ... transportation pipe for oil, chemical industry, metallury, lignt industry, power station, gas and so on. Carbon Steel Worm Gear Orbit Rising ...