Abstract:
A combination device (102) configured to effect lockout and partial stroke testing for an actuator having a piston rod (104) providing linear motion and connected to a guide block (108) in an actuator, wherein the combination device includes a device housing (102a) having a housing bore, wherein the device housing is adapted to mount on a receptacle on the actuator that aligns a device housing bore coaxially to the translatory motion axis of the piston rod; an extension rod (109) adapted to be attached to the guide block connected to the piston rod; at least two slides or a profiled bore index sleeve (106) disposed in the device housing that when engaged provide means of restraining the movement of the extension rod in a manner that prevents said extension rod from moving and, in use, a driver element of the actuator from rotating relative to an actuator housing; a housing cover mounted over the device housing wherein the housing cover protects and retains the extension rod, and the slides or the index sleeve in the device housing and a spring biased safety pin mounted on the housing cover wherein the spring biased safety pin is configured to prevent unintended actuation of the actuator; and a tubular cover to protect the extension rod.