... , 3-15psiFlow Characteristics: Linear, Equal-percentage, Quick-openPneumatic control valves are intended for general utility service in pressure, flow, and ... 1Leakage levelHard-sealing IV level, Soft-sealing VIFlange sizeConform with JB/79.1(2)-94,HG20592-97,GB,ANSI ... low TEM.)Series typeNormal TEM, middle TEM, low TEM, bellows sealing type, jacket insulation type, shut-off control typeWorkshop pictures ...