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Products

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P series pneumatic single-seat control valve

Detailed Introduction

 

Designed with a modular concept, the main components can be combined and interchanged at will. It features a compact structure, small size, light weight and sensitive operation. The flow channel is in an S-shaped streamlined shape, featuring low pressure drop loss, large flow capacity, precise flow characteristics and convenient maintenance. It is particularly suitable for working conditions where the allowable leakage is small, the pressure difference before and after the valve is not significant, and the fluid is clean. It is widely applied in industries such as petroleum, chemical engineering, power, light textile and papermaking.

 

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)All the control valves of our company adopt S-shaped valve bodies, which have excellent pressure resistance and reliable structural strength. This ensures that the valves will not cause common defects of domestic control valves such as deformation and increased internal leakage at the installation site. The flow channel inside the valve is of low flow resistance and S-shaped flow channel, which makes the whole machine have very small flow resistance, a wide adjustable range and high accuracy of flow characteristics.
   2) According to different working conditions, different structures and fully interchangeable throttling components, also known as valve internalities, can be selected. The flow characteristics are available in options such as equal percentage, straight line, and quick opening.
3) The internal components of the P series pneumatic single-seat valve are composed of the valve seat, valve core and valve stem, and adopt an upward guiding structure. It has the advantages of compact structure, light weight, high regulation accuracy, small pressure drop loss, precise flow characteristics, large guiding area and anti-vibration. It is particularly suitable for working conditions where the allowable leakage is small and the pressure difference before and after the valve is not significant.

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