Imported pneumatic double-seat control valve | German LIK brand

The German Lake brand imported pneumatic double-seat control valve
adopts a dual-number guide structure and is equipped with a multi-spring pneumatic diaphragm actuator. It has the advantages of compact structure, light weight, sensitive action, large valve capacity, accurate flow characteristics, and easy disassembly and assembly. It is widely used to accurately control the process parameters of gas, liquid, steam and other media such as pressure, flow, temperature and liquid level to maintain a given value. It is especially suitable for medium situations where the pressure difference is large, the allowable leakage is large, and the medium is not very clean.
This series of products includes standard type, bellows sealed type, jacket insulation type and other varieties. The nominal pressure grade of the product is in the range of , , and valve body diameter. The applicable fluid temperature ranges from ℃ to +℃. Leakage standards are Level III and Level IV. Flow characteristics are linear or percentage. A variety of varieties and specifications are available.
Imported pneumatic double-seat control valve main parts materials
Body material is carbon steel
Body material is stainless steel

Valve body

Valve body

Valve seat

Valve seat

Valve core

Valve core

Guide sleeve

Guide sleeve

Valve cover

Valve cover

Valve stem

Valve stem

Packing
Flexible graphite
Packing
Flexible graphite

Spring
Spring


Nut

Nut

Valve cover form of imported pneumatic double-seat regulating valve
Note that the normal temperature type has an operating temperature of +°C and a leakage level of Level IV.
The high-temperature valve cover is equipped with a heat sink, which can be used in situations where the medium temperature is +°C.
The bellows seal type forms a complete seal on the valve stem that moves up and down, blocking fluid leakage.
The low-temperature type adopts an extended valve cover and a heat-insulating plate structure, which can be used in cryogenic conditions of ℃.
Main technical parameters of imported pneumatic double-seat control valve
Nominal diameter







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Rated flow coefficient
Straight line


Equal percentage


Actuator model
Direct action




Reaction




Rated stroke




Diaphragm effective area




Nominal pressure

Inherent flow characteristics
Straight line equal percentage
Intrinsic adjustable ratio

Signal range

Air source pressure


Main performance indicators of imported pneumatic double-seat control valve
Serial number
Project
Standard control valve
Heat dissipation, low temperature control valve
Without locator
With locator
Without locator
With locator

Basic error＜


< br/>

Hysteresis＜


Dead zone＜


Always point deviation＜
Gas Start
Starting point



Ending point


Qi close
Starting point


End point


+
+
+