While we can supply older models, all the valves described on this site have a preload assembly. This design allows the rotor to be inspected or replaced without taking the valve off the actuator, and valves ordered with a microelectric actuator are permanently aligned.
Specifications vary depending on the valve type and size.
The same configuration can also direct one stream to a number of outlets for fraction collection. See application suggestion. However, SFs allow the non-selected streams to flow through individual outlets instead of a common outlet. See application suggestion. See application suggestion.