The V70 Double Opening Transfer Valve suited for corrosive processes such as etch or CVD, the technology of L-motion of the gate by a single-shaft pneumatic actuator. In a L-motion, the gate is moved vertically into close position – without any contact to the valve body – and in the final movement it is pushed horizontally to the gate seat, with the seal touching the gate seat with a fixed force, related to the connected air pressure. Not only does this avoid any friction and with-it potential particle generation, it also minimizes seal wear.

To minimize particle generation and activation, the gates are fitted with insert O-ring seal, and vulcanized seals is an option. This is a highly reliable and more durable sealing solution then a standard O-ring sealing, although standard O-ring sealing is available as an option. The shaft feedthrough is sealed with highly durable metal welded bellows.

In case of power failure, the V70 can be mechanically locked in closed position.

Already installed in hundreds of demanding applications in various semiconductor, Solar and Industry production processes, the V70 series has proven its outstanding reliability. With a robust design as well as reduced and easy maintenance, the V70 series convinces in all aspects.

The V70 Double Opening Transfer Valve is always tailored to customer specifications. Nevertheless, four basic design types are predefined: two valve types with different rear side openings and two insert types with inside or outside chamber valve seat.

The valve body material options are aluminum, hard anodized, nickel-plated or stainless steel. Gate and bonnet seals are in FKM or FFKM. Other sealing materials are available on request.