Square Rotary Air Lock ValveFlow with Dust-Free Discharge. We manufacture square rotary airlock valves, designed to efficiently discharge materials and isolate air in bulk handling systems. They are built to last in the industry and require low maintenance.Specifications:FeatureDescriptionValve TypeSquare Flanged Rotary Air LockSize Range150 mm to 500 mmBody MaterialCast Iron / Mild Steel / SS 304 / SS 31 ... Continue