Electric cut-off valve znaf pneumatic eccentric rotary valve, is a novel structure of the control valve. It consists of a single action cylinder and double acting cylinder and eccentric rotary valve body parts. When the valve is rotated, the spherical valve core is arranged on the valve shaft relative to the center of the valve body for eccentric rotation, its trajectory forms a cam shape curve; when the valve is closed, the spool of the elastic deformation of flexible arm, so that the valve and valve seat sealing surface contact surface to achieve a reliable sealing requirements. Znaf pneumatic eccentric rotary valve has a valve body flow all the way, small resistance, light weight, and the same caliber single, two-seat valve, large flow capacity, the weight of the same caliber, or only single seat regulating valve 1/3. The rotary motion, the stuffing seal better, at the same time the actuator has large output torque, small leakage valve, large rigidity, and good stability, especially suitable for the regulation of high viscosity or medium containing particles. Can be widely used in chemical, petroleum, light square, metallurgy and power plants and other industrial production of automatic control and remote control. Is mainly suitable for high viscosity, containing and easy adhesion of solid medium.
Znaf pneumatic eccentric rotary control valves including control valve, throttle valve and pressure reducing valve, and its role in the regulation of the medium pressure, flow and other parameters.
Regulating valve according to the structure is divided into nine categories: (1) the single-seat regulating valve;
(2) seat regulating valve;
(3) sleeve valve;
(4) the angular adjusting valve;
(5) three - valve;
(6) the diaphragm valve;
(7) the butterfly valve;
(8) the ball;
(9) the eccentric rotary valve. The top 6 for the straight stroke, three kinds of the rotary.
Regulating valve, used for flow, pressure and level control medium. According to the signal conditioning parts, automatic control valve opening to achieve the medium flow rate, adjustment, pressure and level. Znaf pneumatic eccentric rotary valve by the electric actuator or pneumatic actuator and control valve of two parts. Regulation and is usually divided into direct single-block two-seater two, which have large flow capacity, small and unbalance do the characteristics of stable operation, it is usually suitable for high flow, high pressure drop and leakage.
The valve is a control valve of fluid delivery system components, with the deadline, regulation, diversion, to prevent reflux, regulation, diversion or overflow relief functions.
For fluid control valve system valves, valve from the simple to the extremely complex automatic control system used in a variety of valves in, its very diverse types and specifications. Znaf pneumatic eccentric rotary valve can be used for the control of air, water, steam, all kinds of corrosive media, mud, oil, metals and radioactive liquid media and other types of fluid flow. Nominal valve through from a few mm
The instrumentation needle valve to 10m
Valves in industrial piping. The work pressure of the valve from 1.3× 103mpa;
To 1000MPa
Ultra high pressure. Working temperature from 269℃ ultra low temperature to high temperature 1430℃. Valve gate control can be a variety of ways, such as manual, pneumatic, electric, hydraulic, electric - gas or electric - hydraulic linkage and electromagnetic drive; also can be in the pressure, temperature or other forms of sensor signal, action according to the requirements, or just a simple open or closed.
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