Selectors (multiposition valves) step incrementally through continuous revolutions, instead of switching back and forth like two position valves. (Selectors step bi-directionally with microelectric and universal actuators.) The preload design allows the rotor to be inspected or replaced without taking the valve off the actuator. Valves ordered with a microelectric actuator are permanently aligned.
Valco selectors are available in five lower pressure flowpaths typically used in gas chromatography applications, and two high pressure flowpaths suitable for high performance liquid chromatography.
High pressure selectors
Click "select" for product numbers and information.
|1/16"||0.4 mm||4, 6, 8, 10, or 12||5000||75°C||Select|
|1/8"||0.75 mm||4, 6, or 8||5000||75°C||Select|
|Both column ends selected, ST||1/16"||0.4 mm||4 or 6 columns or loops||5000||75°C||Select|