Saturday, April 30, 2016

Spring Return "Deadman" Handles: Certainty of Valve Position When Unattended

Spring Return Handle
Spring Return Handle on Ball Valve
If you want to operate a valve manually, but maintain the advantage of the fail-safe spring’s certainty of position when unattended, check out the Kinetrol's spring return handle.

This uniquely designed manual operator offers some compelling advantages in automating valves and provides additional levels of plant safety.

Spring return (also known as "deadman") handles will help you meet individual plant safety requirements as well as and OSHA requirements for valves that must return to the closed position after operation. Different from lever handle or gear operators which will leave the vale in the last position, the spring return deadman device ensures that the handle will always be driven to its original starting position by the associated spring.

Unique Features Include:
  • Manual unit cannot be left in the wrong position
  • Reliable torque delivery for valve reseat
  • Fire fail-safe option, for fail-safe manual operation of valves
  • Clockwise or counter clockwise 90° spring action 
  • Spring housing sealed to IP65 to protect from internal corrosion
  • ISO5211 female drive & ATEX Category 2 approved options available forKinetrol actuators 02, 03, 05 and 07