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气动法兰球阀 Q641F/Q641H-40 DN200 [厂家直销]气动硬密封球阀 Q641H气动硬
Pneumatic flanged ball valves Q641F/Q641H - 40 DN200 / manufacturers selling pneumatic Q641H hard seal ball valve pneumatic hard
一、气动球阀产品概述:
气动球阀是一种(球体)绕垂直于通道轴旋转90o的阀门,其由气动执行器和O型阀结构组成。气动球阀调节型属旋转类型高性能调节或开关阀类,接受工业自动化控制(DCS、PLC系统)仪表来源的电流信号或电压信号的输入输出。气动球阀开关型,可作简单的开关动作。气动球阀可实现对工艺管路中流体介质的比例调节或二位开关控制,从而达到对流体介质的流量、压力、温度、液位等参数的自动化控制。气动球阀也可以做切断阀使用,全开到全关只需5秒左右时间。
二、气动球阀产品特点:
1.气动球阀流体阻力小,是所有阀类中流体阻力最小的一种。以压缩空气作动力,调节型接受(4-20mA、0-10mA或1-5VDC)电流信号或电压信号,即可控制运转。开关型接受简单的触点型号实行开关动作。气动球阀以角行程输出的扭矩转动球体0~90o,达到启闭动作或调节动作。
2.气动球阀球芯通道平整光滑,不易沉积介质,可以进行管线式通球。结构简单、重量轻、密封性能好。 气动球阀特别适用于要求零泄漏率的场合。
3.气动球阀***降低了球与密封圈之间的磨擦系数,减少了操作力矩。当介质压力较小时,气动球阀密封圈与球体接触面较小,故有较大的密封比压,确保可靠密封,当介质压力较大时,气动球阀密封圈与球体接触面积也相应增大,故阀座密封圈能承受较大的介质推力而不会损坏,确保可靠密封。
A, pneumatic ball valve products overview:
Is a kind of pneumatic ball valve (ball) perpendicular to the tunnel axis rotate 90 O valve, the valve by pneumatic actuators and O structure. External regulation belongs to the rotation type pneumatic ball valve of high performance to adjust or switch valve, the industrial automation control system (DCS, PLC) meter source current or voltage signal input and output. Pneumatic ball valve switch mode, can make a simple switch action. Pneumatic ball valve can be realized in the process piping fluid proportion adjustment or two switch control, fluid flow, so as to achieve the parameters such as pressure, temperature, liquid level of automation control. Also can do cut-off valve used, pneumatic ball valve fully open to the seated just 5 seconds time.
Second, the pneumatic ball valve product features:
1. Pneumatic ball valve fluid resistance small, is all the minimum fluid resistance of the valve. With compressed air as the power, external regulation accept (4-20 ma, 0 to 10 ma, or 1 to 5 VDC) current or voltage signal, can control the operation. Switch type accept simple contact type switch action. Pneumatic ball valve to Angle the itinerary of the output torque rotating sphere 0 ~ 90 o, opening and closing action or adjust the action.
2. The pneumatic ball valve ball core channel level off is smooth, not easy to deposit medium, can be in-line ball. Simple structure, light weight, good sealing performance. Pneumatic ball valve is particularly suited to zero leakage rate required.
3. The pneumatic ball valve effective reduce the friction coefficient between the ball and seal, reduce operating torque. When the medium pressure is small, pneumatic ball valve sealing ring and ball contact area is lesser, reason has larger sealing pressure, ensure reliable seal, when the medium pressure, pneumatic ball valve sealing ring and ball contact area also increases accordingly, so the seat sealing medium can bear larger thrust without damage, to ensure reliable sealing.
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