The 4108 is a bronze and stainless steel throttle actuator, built with a large bore to provide force for controlling difficult throttle or governor levers. The 4108 comes equipped with an output rod that is adjustable to obtain a precise stroke, and is typically meant for heavy duty applications.
The 4108 comes in variable pressure ranges, and has a maximum input pressure of 200 PSI (13.8 BAR) with a 1/4" NPT.