With manual ( The handwheel) Explosion-proof pneumatic ball valve pictures

With manual ( The handwheel) Explosion-proof pneumatic ball valve is mainly to when power outage or expired, the role of the emergency switch, its principle is in the original foundation, pneumatic ball valve assembly started operation, is to prevent when site fails, the absence of air supply and power supply, through the handwheel device to operate pneumatic valve switch, can effectively reduce and avoid accident occurrence.








with manual ( The handwheel) Explosion-proof pneumatic ball valve by pneumatic actuators, manual switch device, pneumatic ball valve and related explosion-proof accessories, such as: explosion-proof solenoid pneumatic valve, explosion-proof limit switch, air source treatment sanlian pieces and so on, by configuring different control accessories, which can realize remote control, fast cutting off and regulating function, is suitable for inflammable and explosive dangerous environment, such as gas, liquid, dust, widely used in the petroleum, chemical industry, metallurgy, electric power, pharmaceutical, paper making, water treatment, food, construction and other fields.








with manual ( The handwheel) Explosion-proof pneumatic ball valve by 0. 4 - 0. 7 mpa clean air source can control pneumatic valve operation, and sent out to passive contact signal indicates the switch, pneumatic valve and execution speed relatively quickly, to achieve local control and remote centralized control, pneumatic valve in the control room can control the switch, do not need to run to the field or high altitude and dangerous manual control, to a great extent, save human resource and time, improve the security.









nominal diameter

DN15 ~ 12 ( mm)



nominal pressure

PN1. 0 and 1. 6, 2. 5, 4. 0, 6. 4 mpa




drive form
4 - compressed air 7bar（ With manual device)



connection

flange connection




structure form two sections of pneumatic valve





action range
0 ~ 90 & deg;



optional accessories

explosion-proof solenoid pneumatic valve, explosion-proof limit switch ( Reply)



applicable medium

gas, liquid, oil



control mode

switch mode, external regulation ( Locator 4 - 20 ma analog signal)



role form

single acting spring return ( Normally open, normally closed) , the double action ( Gas-off)





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