1.Summary of Pneumatic Single Seat Regulating Valve
Pneumatic single-seat regulating valve is composed of ZHA/B multi-spring pneumatic film actuator and top-guide through low flow resistance single-seat valve. It has compact structure, light weight, sensitive action, S-streamlined fluid passage, small pressure drop loss, large valve capacity, accurate flow characteristics, power distribution-pneumatic valve positioning or pneumatic valve positioner, which can realize the process. The automatic control of pipeline fluid medium is widely used to precisely control the parameters of gas, liquid, steam and other media, such as pressure, flow, temperature, liquid level, etc. The parameters are kept at a given value. It is a new generation of universal control valve products in line with IEC standards.
2. Main Technical Parameters of Executing Agencies
3. Electric-pneumatic valve positioner
Electrical valve positioner is the main supporting instrument of pneumatic actuator in industrial automation. It can be used to improve the linearity of valve position, overcome the friction force of valve stem and eliminate the influence of unbalanced force of regulating valve, so as to ensure that the valve position is proportional to the current signal of 0-10mA DC or 4-20mA from control system or regulating instrument. Achieve correct positioning. (Various models and specifications can be selected)
The company's electric-pneumatic valve positioner matching type (HEP-15 flameproof, HEP-17 intrinsically safe type). It can also be matched according to different requirements (ZPD2000 series, EP3000 series, EP4000 series, YT1000 series, YT2000 series, SIPART PS2 Siemens series and intelligent positioner series products)
4. Performance Indicators of Pneumatic Single Seat Regulating Valve
Note: 1) P-valve positioner; R-pressure relay;
2) The allowable pressure difference is the maximum of P when the valve closes P2=0.
3) If the allowable pressure difference is not clear or the maximum working pressure difference is beyond the scope of the list, please contact us.