美國阿斯卡先導式電磁閥，EF8401B020M

上海乾拓貿易有限公司

企業QQ:2880626086

手機；17302157802（微信）

郵箱:17302157802@163.com 

傳真；021-39947181

聯系人：楊艷鳳

上海市嘉定區江橋鎮嘉涌路99弄6號713室 

先導式電磁閥，通電時，依靠電磁力提起閥桿，

導閥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口打開，此時電磁閥上腔通過先導孔卸壓，

在主閥芯周圍形成上下高的壓差，在壓力差

的作用下，流體壓力推動主閥芯向上移動將主

閥口打開；斷電時，在彈簧力和主閥芯重力的

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，閥桿復位，先導孔關閉，主閥芯向下

移動，主閥口關閉；電磁閥上腔壓力升高，流

體壓力向主閥芯加壓，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.)

美國阿斯卡先導式電磁閥，EF8401B020M