What is an electric flapper valve?
The electric plug-in valve is a valve in which the gate and the valve seat are always in close contact and sealed. The opening and closing part of the electric plug-in valve is a shutter, and the movement direction of the shutter is perpendicular to the direction of the fluid. The gate has two sealing surfaces, and the two sealing surfaces of the commonly used mode gate valve form a wedge, and the wedge angle varies with the valve parameters.
The principle of the electric plug-in valve: a round port with a diameter is opened on the gate. The opening and closing of the gate makes the round port on the gate to move away from and match the diameter.
Technical parameters of electric flapper valve:
Nominal diameter range: DN50-DN500
Nominal pressure range: 1.0MPa-1.6MPa
Material: cast steel, stainless steel
Gate material: 2Cr13, 201, 304, 316, 316L
Connection form: Wafer type
Seat Seal: Nitrile, EPDM, Viton
Surfacing welding 2Cr13, , cemented carbide
Packing seal: graphite packing, PTFE packing
Precautions and characteristics of electric plug-in valve:
The opening and closing part of the electric plug-in valve is a shutter. The movement direction of the brake is perpendicular to the fluid direction. The plug-in valve can only be fully opened and fully closed, and cannot be adjusted and throttled. The gate has two sealing surfaces. The two sealing surfaces of the commonly used mode gate valve form a wedge shape, and the wedge angle varies with the valve parameters, usually 50. Rigid gate; it can also be made into a gate that can produce slight deformation to improve its processability and make up for the deviation of the sealing surface angle during processing. This type of gate is called an elastic gate when the valve is closed It can only rely on the medium pressure to seal, that is, rely on the medium pressure to press the sealing surface of the gate against the valve seat on the other side to ensure the sealing of the sealing surface, which is self-sealing. Most plug-in valves are forcedly sealed, that is, when the valve is closed, the gate is forced to be pressed against the valve seat by external force to ensure the tightness of the sealing surface. The plug-in valve seal structure can be divided into soft seal and hard seal structure.
Entered our country from the eighties. In less than two decades, its use has expanded from the general field to a wide range of industries. Coal preparation, slug discharge and slag discharge from mining power plants. It has developed into urban sewage treatment, from general industrial pipelines to professional pipeline systems such as food, sanitation and medicine. The ultra-thin knife gate valve has the advantages of small volume, small flow resistance, light weight, easy installation, and easy disassembly.It solves the large flow resistance of ordinary gate valves, flat gate valves, ball valves, globe valves, regulating valves, butterfly valves and other types of valves. Difficult problems such as heavy weight, difficult installation, and large floor space. After the appearance of knife gate valves, a large number of universal shut-off valves and regulating valves have been replaced.