... have stainless steel valve and brass valve for your reference, both of SS valve and brass valve can be normal close ... : Direct Drive TypeType : Normal Close Type / Normal Open TypeAperture of Flow Rate : 25mmCv Value : 12Joint Pipe Bore : 1"Operation ... ,DC24V,AC24V,AC36V,AC110V,AC220V,AC380VVoltage Range : ±10%Material of Body : BrassMaterial of Oil Seal : NBR , EPDM , VITON Stock, Quality check, ...