Check Butterfly Valve

Hydraulic butterfly valve is widely used in blast furnace gas pipeline system in metallurgical industry to prevent gas from tempering inside the pipe. In the power industry, in order to prevent the sudden reduction of the pressure in the steam turbine when the turbine unit is shedding load, the steam in the exhaust pipe and the heater is poured into the steam turbine, resulting in a vicious accident of breaking the turbine blade and damaging the turbine generator. Here the valve is used for emergency cutting off. When the system is in dangerous condition, the emergency valve can be implemented within 0.5 seconds to realize the reliable cut-off of the pipeline. Effectively prevent steam and condensate water from pouring back at the tail of steam turbine and protect the safety of steam turbine unit Structure and features of hydraulic Butterfly Valve 1. The valve is mainly composed of valve, hydraulic station, fast closing actuator, PLC intelligent electronic control box and special stroke feedback device, etc. 2. The fine finishing pinion-and-rack hydraulic actuator is compact in structure, stable in operation, safe and reliable; 3. PLC intelligent electrical control system is of high degree of automation, remote, local control system; 4. Adopts international famous brand automation components, making superior product performance, reliable quality.   5. The valve normal opening and closing power source is generally provided by the matching hydraulic pump station, also can come from the steam turbine main engine hydraulic station. 6. The system power supply is 380 v, the control power supply is AC220V、DC220V、DC110V and other power supply grades; 7. The valve adopts tri-eccentric multi-layer metal hard seal butterfly valve of high temperature resistance, flexible opening and closing, easy and reliable sealing