Circular-shaped valves with housing in aluminum, steel, stainless steel, or PVC. Both single and multi-bladed valves are available. We offer both wafer type or flanged type valves. Flange type and size depending on customer needs. We develop valves with sizes up to 3000 mm / 118 inches and various temperature ranges. Our valves can be found in applications for combustion gases, hot air industrial ventilation, and cold air.