First, Z45 cast iron dark bar valve main features and uses

1, Compact structure, reasonable design, good valve rigidity, smooth passage, small flow resistance coefficient. 
 2, the sealing surface of stainless steel and carbide, long life. 
 3, Flexible graphite packing, reliable sealing, light and flexible operation. 
 4, the driving mode sub-manual, electric, pneumatic, gear drive, structure type: elastic wedge single gate, rigid wedge single gate and double gate model. 
 5, Widely used in petroleum chemical industry, thermal power plants and other oil products, water vapor pipeline for access or cut off the medium pipeline opening and closing devices. 

Second  , Z45 cast iron dark bar gate valve main technical parameters

Third, Z45 cast iron dark rod valve main parts and materials

Fourth, Z45 cast iron dark bar gate valve main dimensions and weight