Ball valves are constructed around a full-bore design that makes sure the product passes through the valve with minimal effect on the flow, and that there is as little pressure drop as possible.     The Alfa Laval SBV valve design is a full-bore unit with a constant pipeline diameter and flow restriction performance comparable to that of a straight tube. These valves are ideal for applications that involve high operating pressures (up to 16 bar) and high temperatures (up to 150°C), and where it is important to be able to use pigging systems for cleaning. This makes SBV valves ideal for use with viscous liquids as well as liquids containing solid or semi-solid particles.   SBV units are designed for use as a product valve, and are available with pneumatic actuators or manually-operated handles. The standard maintenance-free actuator uses inductive proximity switches for position indication. Two inspection holes in the bonnet connecting the valve body and actuator allow for easy inspection of the stem seal tightness. Actuated valves are delivered NC (normally closed) and are easily rebuilt to NO (normally open) configuration. The stainless steel handle for manual operation mechanically locks the valve in the open or closed position. Alfa Laval ball valves for sanitary use bear the SBV and Tri-Clover® designations.