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M series pneumatic sleeve control valve

Detailed Introduction

 

The M series pneumatic sleeve control valve is a pressure-balanced control valve. It adopts a sleeve guided and pressure-balanced double-sealed valve core structure. The flow channel is in an S streamlined shape and is equipped with a multi-spring actuator, ensuring smooth overall operation. It features a large allowable pressure difference, precise flow rate and low noise. It is particularly suitable for large flow rates and significant pressure differences before and after the valve. In situations where the requirements for leakage are not high. The products are widely applied in the automatic control systems of industrial sectors such as chemical engineering, petrochemicals, chemical fibers, power, metallurgy, and environmental protection.

 

Nominal diameter 

DN15~DN400

Nominal pressure

PN1.0~PN10.0  Class150~Class600

Working temperature range

-196℃~565℃

Connection method

Flanged type, welded type and threaded type

Valve body material

WCB  CF8  CF8M  CF3M  TA  C-276  2205

Material of the valve internals

304  304+STL  316   316+STL  316L  316L+STL 17-4PH  C-276

Valve cover form

Standard type, heat dissipation type, elongated type, bellows seal type, bellows seal heat dissipation type

Flow characteristics

Equal percentage, straight line

Leakage grade

Hard seal Grade IV, Soft seal Grade VI (Standard ANSIB16.104)

Thin-film actuator

PZM200  PZM280  PZM400  PZM600  PZM1000  PZM1600

Spring range and air source

40-200KPa (0.25MPa for air source) 80-240KPa (0.3MPa for air source)

Input signal

4-20mA.DC


【 Product Features 】

   1.The flow channel adopts an S-shaped structure, which can suppress the vortices generated by the complex shape of the flow path and the complex and irregular flow caused by the sudden expansion of the flow path, thereby achieving efficient and stable medium flow.
   2. It adopts a modular design, featuring strong interchangeability and universality. By replacing different sleeves, different flow coefficients and flow characteristics can be obtained.
   3. Balanced structure: Significantly reduces the unbalanced force acting on the valve core; Meanwhile, it also features damping operation, which is conducive to the stable operation of the control valve. Through specially designed symmetrical small holes on the valve internal components, noise can be reduced, further pressure reduction can be achieved, thereby preventing flash evaporation and cavitation. It is particularly suitable for various high-pressure difference and low-noise applications, improving the comprehensive performance of the control valve. Therefore, it can be used in applications with large pressure differences and low noise.
   4. Convenient installation and maintenance: The valve seat is pressed against the valve body through the valve cover without using threaded connection, making installation and maintenance convenient.
   5. Due to the adoption of a multi-spring type small and high-output force diaphragm actuator with a simple mechanical structure, the height of the control valve has been successfully and significantly reduced, achieving miniaturization.
   6. By using the high-precision flow characteristic curve IEC as the standard technical parameter, the "ideal" flow was theoretically achieved, ensuring the stability of process gain. Under the condition of process control based on computer simulation and valve opening degree, flexible control can be achieved.


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