PVDF butterfly valve gear type is installed by bolts. The two ends of the flanges on the PVDF butterfly valve gear type are connected to the two ends of the pipe flange by welding. There are three kinds of butterfly valves commonly used: wafer butterfly valve, flange butterfly valve and butt welding butterfly valve. PP wafer butterfly valve is connected between the two pipe flanges by stud bolts; flange butterfly valve is equipped with flange on the valve. The disc-shaped butterfly plate rotates around the axis. The turbine FRPP butterfly valve uses the circular butterfly plate as the opening and closing part and rotates with the valve rod to open, close and adjust the fluid channel. The turbine FRPP wafer butterfly valve butterfly plate is installed in the diameter direction of the pipeline.
In the cylindrical channel of PVDF butterfly valve gear type body. The rotation angle of the gear butterfly valve is 0-90 degrees. When the rotation angle is 90 degrees, the valve will be fully open. The size of the vortex device is small, and the butterfly valve has the advantages of simple structure, small volume, light weight and low data consumption. The turbine FRPP butterfly valve is characterized by fast switch, 90 degree reciprocating rotation and small driving torque. It is used to cut off, connect and regulate the medium in the pipeline. PVDF butterfly valve gear type has good fluid control characteristics and closing sealing performance. When the turbine butterfly valve is in the fully open position, the butterfly plate thickness is the only resistance when the medium flows through the valve body, so the pressure drop generated by the valve is very small, so it has better flow control characteristics. PVDF butterfly valve gear type has two types of seal: elastic seal and metal seal. Elastic sealing valve, sealing ring can be inlaid on the valve body or attached to the butterfly plate around the complete seal. Metal seal can adapt to higher working temperature. The valve with metal seal has longer service life than that with elastic seal. The elastic seal has the limitation of temperature. PVDF butterfly valve gear type makes the loss of fluid resistance small, and the streamline design of butterfly plate. It can be described as an energy-saving product. After quenching and tempering treatment, the valve rod of PVDF butterfly valve gear type has good comprehensive mechanical properties, corrosion resistance and scratch resistance. When PVDF butterfly valve gear type is opened and closed, the valve rod only rotates without lifting, the packing of valve rod is not easy to be damaged, and the sealing is reliable. It is fixed with the taper pin of the butterfly plate, and the extension end is designed to prevent the valve rod from bursting out when the valve rod is accidentally broken at the connection of the valve rod and the butterfly plate. The main correct choice of valve size and type. The structure and principle of plastic wafer type turbine butterfly valve is especially suitable for making large diameter valve. It is not only widely used in petroleum, gas, chemical industry, water treatment and other general industries, if butterfly valve is required to be used as flow control. PVDF turbine butterfly valve is also used in cooling water system of thermal power station