... :Characteristics:Linear,Equal%,Quick Pneumatic Cage Control valve( Pneumatic Diaphragm Type) Size:DN25~500 1''-20''Material:SS304, SS316, etcFlow Characteristics ... ~+560(high TEM.),-40~-196(low TEM.),Series typeNormal TEM.,middle TEM.,low TEM.,bellows sealing type,jacket insulation type,shut-off control typeWelcome ...