GD series high vacuum baffle valve is the device which turns on or cut off the vacuum airflow. The applicable media is air and non-corrosive gases.
It has two types, one is angle-through (GD-J) and another is with flange style of pre-pump (GD-S). And it has two forms in seal, combinatorial rubber seal rings seal and bellows seal. It is the bellows seal style after the product type No. With "b".
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