Main: electric control valve, thermostatic valve DN15, 20,25,32,40,50,65,80,100,125,150,200,250,300 mm valves, steam valves, electric thermostat valve, Siemens electric two-way valve, Huo Nivelles electric valves, electric valves Xi'an Siemens, Siemens electric three-way valve, Honeywell electric steam valve electric control valve, Shaanxi, Xi'an electric control valve, electric control valve, Gansu, Lanzhou electric control valve, electric control valve Hebei Shijiazhuang electric control valve, Chengde electric control valve, electric control valve, Shanxi, Shandong and electric control valve, electric control valve, Henan, Hebei Cangzhou electric control valve, electric control valve Jinan, VRV series electric control valve, balance valve structure, selection of domestic implementation of device; Adaptation: VRV series thermostatic valve / electric control valve. Used in air conditioning, refrigeration, heating, ventilation, heating and other control systems. Acceptable instrument or computer output intermittent or continuous control signals to adjust the pressure, flow, level, temperature, humidity and other parameters. But also to adapt to various industries chemical, petroleum, metallurgy, electric power production process automatic control and remote control. Features: 1 actuator torque 1800N-6500N. Three floating-point or 0 ~ 10v; 4 ~ 20mA control signal. (2) body diameter DN50-DN150mm; pressure: PN1.6Mpa. 3 valve 2 ℃ ~ 140 ℃;. Steam valve 2 ℃ ~ 180 ℃ 4 modular stem stuffing using a spring loaded, self-adjusting "V"-rings. Without leakage. 5. Balanced body structure, high-pressure system to overcome the unbalanced force, pressure differential to adapt to situations.