Trapping/flow-through flowpath – STF configuration

Multiposition valves – low pressure
MW Type

The STF valve is a variation of the ST flowpath, with the single difference that the non-selected streams are returned to their own vents or sources rather than being dead-ended or trapped, as they are in the standard ST configuration. See application suggestion.

Specifications / Product numbers

A complete valve product number includes information about the specific valve, actuator, and mounting hardware. Locate the valve with desired specifications in the chart below and select it to continue to the next step in arriving at the correct product number.
Jump to the valve selection chart.

Actuation

Valves can be automated with pneumatic or electric actuators. Manual actuation is not recommended. Read more about actuators.

Standoffs

Multiposition GC valves usually require a standoff - an extension between the valve and actuator which allows the valve to be mounted in the heated zone while the actuator or handle remains outside at ambient temperature. Standoffs are available in lengths of 2", 3" 4", and 6".

Options

Valve selection chart

For specific product numbers, select a valve specification below.

Further reference

Multiposition valve applications
Flowpath configurations
   SD low pressure
   SD high pressure
   SC
   SF
   ST low pressure
   ST high pressure
   STF
About multiposition valves