Keystone Adjustable Travel Stops (Wafer Style)

Adjustable travel stop and safety lockout device for Keystone F79U/E003 – 036 pneumatic actuators.




  • Allows simple and easy adjustment of the open and close position of the valve and actuator arrangement.
  • Compact low profile wafer style.
  • Padlocking facility provided as standard.
  • No degrading of valve to actuator connection strength.
  • Can be retro-fitted to existing Keystone valve and F79U/E 003 -012 actuator arrangements.
  • Capable of providing valve locking when the actuator is removed (when fitted with two retaining screws.)



Long Lasting Butterfly Valves with a Sturdy Reputation

Emerson’s Keystone offer a complete range of butterfly valves from general purpose through to heavy duty and high performance models. With a tradition of more than 70 years, Keystone built its reputation on providing industrial process butterfly valves known for their reliability, long service life, and reduced operating costs. Independent, third-party life-cycle testing has shown that Keystone resilient-seated butterfly valves last 2.5 times longer than competitors' butterfly valves.  

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