宝德BURKERT2712型气动截止式调节阀
宝德BURKERT2712型气动截止式调节阀常闭、常开、弹簧复位执行机构
burkert2712电磁阀可靠性电磁阀分为常闭和常开二种；一般选用常闭型，通电打开，断电关闭；但宝德BURKERT截止式调节阀在开启时间很长关闭时很短时要选用常开型了。寿命试验，工厂一般属于型式试验项目，确切地说我国还没有电磁阀的专业标准，因此选用电磁阀厂家时慎重。
德国BURKERT宝德气动截止式调节阀2712型

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