ISA-96.08.01:2017

This standard provides basic requirements for mechanical integrity, selection and sizing of gas over oil actuators, both rotary and linear, provided in double and single acting designs.
Actuators for rotary applications may include scotch yoke type, rotary vane type, or helical spline in on/off or modulating services.
For linear applications, actuators shall be of the linear hydraulic design.
This document applies to actuators with a maximum allowable operating pressure from 150 psig to 2250 psig using direct piped natural or sour gas segregated from the actuator by means of gas over oil tanks.