Actuated Valves Design Principles

Actuators generate great torque forces, (b)locking of such valves by mechanical restraint is unacceptable – such locking methods would likely induce damage within the motor assembly. Nonetheless, a key interlock system must ensure the valve is de-energised and disabled (in both Remote and Local modes) and that only the appropriate sequence key is released for continuation of the procedure dependent on the valve’s verified (Open or Closed) position.