The SchuF Rising Stem Ball Valve Explained

SchuF Rising Steam Ball Valves are designed and manufactured to exceed the leading industry standards -- for use in a range of petrochemical and refinery applications. Every single valve manufactured at SchuF is individually designed for the particular operating conditions and process medium of that specific installation.

The Rising Stem Ball Valves use a unique cam system to rotate the ball as the stem raises or lowers. The stem itself does not rotate, and this linear-only travel makes the valve highly suited to frequent cyclic operations while keeping routine maintenance to a minimum. When closing, the Ball sealing face is only pressed against the seat after the ball has completed its rotation movement, completely removing frictional wear and extending component service. Operating the valve utilizes a single actuator, which can be a manual handwheel (with or without gearbox) or electric, pneumatic or hydraulic.

Applications and Services:

- Stem extension for high-temperature service.

- Stem extension and gas column for cryogenic service.

- Slurry and sand service (special design).

- Bellows sealing for dangerous media and zero emissions.

- Molecular sieve/switches valves.

- Gas dehydration and regeneration.

- Hydrogen service.

- Dryer switching.

- Block and bypass.

- Cryogenic Service.

- Emergency shutdown service / Emergency blow down service.

- Hot oil.

- Flow lines.

For a complete product description download our brochure for Special Ball Valves here (PDF document): http://schuf.com/products/ball-valves...