美国阿斯卡先导式电磁阀，EF8401B020M

美国阿斯卡先导式电磁阀，EF8401B020M

上海乾拓贸易有限公司

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上海市嘉定区江桥镇嘉涌路99弄6号713室 

先导式电磁阀，通电时，依靠电磁力提起阀杆，

导阀high flows.

• Can be used to pilot large actuators to provide quick closing

of large control valves.

• Resilient seating for tight shutoff.

• Mountable in any position.

Nominal Ambient Temperature Ranges:

AC: 32°F to 125°F (0°C to 52°C)

AC: 32°F to 104°F (0°C to 40°C)

Refer to Engineering Section for details.

Approvals:

CSA certified. Meets applicable CE directives.

Refer to Engineering Section for details.

Important:

A minimu口打开，此时电磁阀上腔通过先导孔卸压，

在主阀芯周围形成上下高的压差，在压力差

的作用下，流体压力推动主阀芯向上移动将主

阀口打开；断电时，在弹簧力和主阀芯重力的

作用下Diaphragm poppet valves suitable for controlling air-inert

gas and liquids.

• Internal piloting controls large orifices to provide

m operating pressure differential must be

maintained between the pressure and exhaust ports.

Supply and exhaust piping must be full area, unrestricted.

ASCO flow controls and other similar components

must b

See Optional Features Section for other available options.

xplosionproof

AC DC AC DC

F 10.6 6.1 16 30 238210，阀杆复位，先导孔关闭，主阀芯向下

移动，主阀口关闭；电磁阀上腔压力升高，流

体压力向主阀芯加压，密封更好。

e installed in the cylinder lines only.

Construction

Standard: Watertight, Types 1, 2, 3, 3S, 4, and 4X.

Optional: Explosionproof and Watertight, Types 3, 3S, 4, 4X, 6, 6P, 7, and 9.

(To order, add prefix “EF” to catalog number.)

美国阿斯卡先导式电磁阀，EF8401B020M