Part 2 The basic requirements for electric valve actuators for both on-off duty and modulating applications. The section will include guidelines and recommendations for manufacturing process control, device protection, and testing.
Part 3 The basic requirements for pneumatic valve actuators of the single- and double-acting types used for on-off and modulating applications. The section will include guidelines and recommendations for protection, modulation, and testing.
Part 4 The basic requirements for hydraulic valve actuators of the single- and double-acting types used for on-off and modulating applications. The section will include guidelines and recommendations for protection, modulation, and testing.
To provide basic requirements for pneumatic, electric, and hydraulic actuators not manufactured by the valve, damper, or penstock manufacturer. Definitions of terms, performance requirements, and methods of sizing and selection will be developed.
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