Model 74 Pneumatic Valve Positioners are universal positioners that provide versatility, dynamic performance, and high positioning accuracy. Supply pressure variations have little or no effect on the positioner output, which eliminates the need for a supply pressure regulator.
Non-interaction of zero and span adjustments and positive cam locking mechanism
Double-acting or single-acting service accommodates installation in a variety of environments
Field reversibility reduces downtime and simplifies maintenance
Choice of continuously adjustable standard stroke ranging from 1/4" to 48" and continuous span and zero adjustability within range spring limits provide application versatility
Extra high capacity pilots ensure maximum frequency response and optimum stroking speeds for all actuator sizes
Negative feedback pilot circuit allow the positioner to operate with a push-pull gain of more than 900:1 (uisng 100 psig supply) with no sacrifice in stability (gain of 650:1 with 74S models)
Model 74 Pneumatic Valve Positioners are universal positioners that provide versatility, dynamic performance, and high positioning accuracy. Supply pressure variations have little or no effect on the positioner output, which eliminates the need for a supply pressure regulator.
- Non-interaction of zero and span adjustments and positive cam locking mechanism
- Double-acting or single-acting service accommodates installation in a variety of environments
- Field reversibility reduces downtime and simplifies maintenance
- Choice of continuously adjustable standard stroke ranging from 1/4" to 48" and continuous span and zero adjustability within range spring limits provide application versatility
- Extra high capacity pilots ensure maximum frequency response and optimum stroking speeds for all actuator sizes
- Negative feedback pilot circuit allow the positioner to operate with a push-pull gain of more than 900:1 (uisng 100 psig supply) with no sacrifice in stability (gain of 650:1 with 74S models)
