LN83 series cage guided globe control valve are single-seat LN8 series pressure balance control valves, one of the three largest base type products. Use separate sleeve, large guide structure, balance pressure sealing ring, high-performance nonmetal sealing ring, has a good dynamic stability, high control precision, allow the pressure difference is big, the operating force is small, large flow capacity, etc. Suitable working condition of normal temperature, differential pressure, under the action of alternating stress control.
The standard mate of LN8 series is AM8 Multi-spring pneumatic diaphragm actuator, which can be used in many conditions with the features of strong output force, high reliability, long lifespan and extensive application. The output force changes with the number of springs. The high stress resistant diaphragm, bearing maximum pressure of 0.5 MPa air supply, gives control valve a reliable shutoff. This type of actuator has a long life cycle with more than 1 million times.
|Nominal Size||DN40 ~ DN400()|
|Operateing Temperature||-40℃~ 150℃|
|Characteristics||Equal percentage, linear, quickly open|
|Seat Leakage Class||ANSI B16.104: IV、V、VI|
|Body Material||WCB/WCC/LCB/LCC;WC6/WC9;CF8/CF8M;4A/5A etc.|
|Trim Material||630/316/316+ST/316nitriding/316+Ni60/316+WC etc.|
|Seal Material||PTFE+ graphite v-shaped packing, flexible graphite ring packing, graphite +PTFE braided packing etc.|
Nominal diameter: DN40/50/65/80/100/125/150/200/250/300/350/400
Pressure rating: ANSI CL150/300/600; DIN PN16/25/40/63
Valve body and upper bonnet material: WCB, WC6, WC9, CF8, CF8M, etc.
Upper cover form: standard type (-17 ℃ ~ +316 ℃); high temperature type (+316 ℃ ~ +593 ℃); low temperature Ⅰ type (-45 ℃ ~ -17 ℃); low temperature Ⅱ type (-100 ℃ ~ -45 ℃); low temperature Ⅲ type (-196 ℃ ~ -100 ℃); bellows type (-45 ℃ ~ ＋350 ℃)
Packing type: PTFE+graphite V-shaped packing; flexible graphite ring packing; graphite+PTFE compilation packing; etc.
Flow characteristics: equal percentage (%); linear (L)
Adjustable ratio: 50:1
Allowable leakage: metal seal: ANSI B16.104 Class Ⅳ; soft seal: ANSI B16.104 Class Ⅵ
Cage Guided control valve size is in common use for 1-12, an actuator for standard diaphragm type. By metal seat, the suitable temperature range is -196 +538, and by soft seat, the suitable temperature range is -45 +200. It's content to most industrial process control.
The most excellent cage guided structure control valve is balance characteristic, for plug balance ports function, fluid pressure acted on static unbalance force of plug, it reduced unbalance force, then the valve can be configured actuator smaller than conventional single seat valve.
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Tel.: +86 571 8111 9774
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