Product Name: High Vacuum Right Angle Valve (GD-J25b) Model NO.: GD Size: Dn10-Dn600 Trademark: Pioneer Transport Package: Plywood Case Specification: CE, TS, SGS, ISO9001 Origin: China HS Code: 8481804090 Product Description 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".