The WCB electric modulating control valve series includes single seat (ZAZP), double seat (ZAZN), and sleeve (SZAZM) regulating valves. These precision control valves combine electric actuators with various valve body configurations to provide reliable automatic regulation of process parameters including flow rate, pressure, temperature, and liquid level.

Pressure Rating: 1.6, 4.0, 6.0 MPa

Stroke Lengths: 10, 16, 25, 40, 60, 100 mm

Temperature Range: -200°C to +450°C (depending on bonnet type)

Control Signal: 0-10mA DC or 4-20mA DC

Adjustable Range: 30:1

Flow Characteristics: Linear and equal percentage

Valve Body: ZG1Cr18Ni9Ti (low temp), HT200 (normal temp), ZG230-450

Valve Core: 1Cr18Ni9Ti

Flange Standards: JB77-59 (cast steel), JB79-59 (cast iron)

• Wide adjustable range with inherent ratio of 50 and linear/equal percentage flow characteristics
• Optimized fluid dynamics design increases rated flow coefficient by 30%
• Soft sealing structure achieves VI level leakage standard (zero leakage)
• Deep dynamic negative feedback improves automatic adjustment accuracy
• Multiple electric operator types compatible with 4-20mA DC or 0-10mA DC signals
• Bellows sealed design provides complete stem sealing to prevent fluid leakage
• Direct current signal control eliminates need for servo amplifier in electronic models

Widely used in automatic control systems across power generation, metallurgy, light industry, food processing, petroleum, and chemical industries for precise regulation of process parameters.