... steel valve and brass valve for your reference, both of SS valve and brass valve can be normal close valve and normal open valve. ... Drive TypeType : Normal Close Type / Normal Open TypeAperture of Flow Rate : 16mmCv Value : 4.8Joint Pipe Bore : 1/ ... more similar products, please click Join Connector solenoid valve,2W solenoid-Valve,Pneumatic Control Valves. Category: 2W(UD) Series Solenoid Valves ...