国产成人免费成人免费视频在线观看,国产精品宅男免费,久久亚洲?欧美,人妻就是爽30p,亚洲成a人无码av网站,亚洲V国产V中文在线

The electric explosion-proof ball valve has the characteristics of simple structure, quick switching, large flow capacity, zero leakage and so on. It is suitable for the occasions of high viscosity, containing fiber and solid particle fluid.Electric explosion-proof ball valve is widely used in petrochemical industry, metallurgy, light industry and other industrial automatic control field to cut off or flow of gas, liquid transmission pipeline intermediary.

The function of electric explosion-proof ball valve

Electric explosion-proof ball valve explosion-proof grade for Exd Ⅱ BT4, protection grade for IP67, field control devices.The main features of the explosion-proof electric ball valve are: when the power is not on, pull the clutch handle for manual operation.When powered on, the clutch will reset automatically.Flow direction can be arbitrary, adjustable wide range, can be used in high pressure and large diameter occasions, control high viscosity, with fiber and fine particles medium.

Electric explosion-proof ball valve composition

The electric explosion-proof ball valve is composed of angular travel explosion-proof electric actuator and ball valve sphere. It is composed of electronic angular travel electric actuator 3610R or HQ series and ball valve regulating mechanism.

Electric explosion-proof ball valve technical parameters

    Nominal diameter (mm)：15 20 25 32 40 50 65 80 100 125 150 200 250 300

    Discharge coefficient Kv：21 38 72 112 170 273 384 512 940 1452 2222 3589 5128 7359

    Nominal pressure (MPa)：PN1.6、2.5、4.0、6.4MPa

    Leakage: soft seal: zero leakage; hard seal: <10-5 of rated flow

    Body type: Two-stage body (floating ball) Two-stage body (fixed ball)

    Type of spool: "O" spherical spool

    Packing: PTFE, metallic graphite wound gasket

    Connection: Flange, welding, thread

    Flow characteristics: approximate fast opening characteristics

    Adjustable range:DN15-65 DN80-300

    250:1 350:1

    Basic error: ±1%

    Dead zones: 1% or less

    Back to the poor: 1% or less

    Applicable temperature: sealing surface

    PTFE≤150℃, RTFE≤180℃, PPL≤300℃, Hard seal≤450℃

    Equipped with actuators: HQ, 361R and other series of angular travel explosion-proof electric actuators

    Control mode switch in place lamp (two-position switch control), intelligent adjustment (4-20mA analog signal control)