Product wetted steel parts: . . . . . . . . 1.4404 (316L)
Other steel parts: . . . . . . . . . . . . . . 1.4307 (304)
External surface finish: . . . . . . . . . . . Semi-bright (blasted)
Internal surface finish: . . . . . . . . . . . Bright (polished), Ra < 0.8 μm
Product wetted seals: . . . . . . . . . . . EPDM
Other seals: . . . . . . . . . . . . . . . . . . NBR
The standard actuator is prepared for position indication with inductive proximity switches. The actuator is maintenance free. Two inspection holes in the bonnet connecting valve body and actuator allow for easy inspection of the stem seal tightness. Actuated valves are delivered NC (normally closed) and are easily rebuild to NO (normally open).
Alfa Laval sanitary ball valves (SBVs) are full-bore flow valves that provide on/off control with minimal pressure drop. The valve opening has a constant pipeline diameter, which enables fluids to flow freely through the valves when open. Flow restriction is comparable to that of a straight tube. This makes the SBVs suitable for:
For versatility, Alfa Laval SBVs can be supplied for manual or automatic operation.
Manual operation: SBVs feature stainless steel quarter-turn handles to mechanically lock the valves in either open or closed position.
Automatic operation: SBVs use standard maintenance-free pneumatic actuators. Actuated ball valves are delivered as normally closed (NC) valves that are controlled from a remote location by means of compressed air. These, however, can easily be rebuilt to a normally open (NO) configuration. Actuators can be fitted with Alfa Laval ThinkTop valve sensing and control units. Optional inductive proximity sensor and mounting bracket are available.
Operating pressure: . . . . . . . . . . . . 600 - 1000 kPa (6 - 10 bar)
Temperature range: . . . . . . . . . . . . . 4°C to +60°C
Air consumption actuator ø104: . . . . 0.5 Nl
Air consumption actuator ø129: . . . . 0.75 Nl
Max. recommended pressure during
activation: . . . . . . . . . . . . . . . . . . . 600 kPa (6 bar)
Easy to build into most any process line, Alfa Laval SBVs feature a straightforward floating ball design, which guarantees a tight seal and permits axial movement while preventing rotation. They are water hammer-safe and completely insensitive to pressure shocks in the pipelines.
Spring-loaded, self-adjusting seal rings provide highly reliable valve stem sealing. SBVs with automated control have inspection holes in the bonnet for easy inspection of the stem seal.
The three-piece valve design with few moving parts enables easy access to all valve components, making maintenance quick and easy. Durable PTFE valve seats help prolong service intervals. No special tools required for maintenance.