Models 34AR and 341AR air pilot operators thread directly onto the collars of push button valves and the Model ESB Electric Switch Bracket. When used on a spring return valve, they provide a momentary "one-shot" output signal (40 psi min), which actuates the operator piston immediately. The operators pressure balanced piston then resets, even in the presence of a pilot signal. This reset occurs within 0.3 seconds at 40psi, within 0.5 at 100psi, and within 0.7 seconds when used with 4PP, 41PP or 42PP valves. Maximum life cycle is obtained at 40-65psig, 125psig maximum.

Any erratic action of the operator is caused by small diameter or long pilot lines, restricted fittings, low flow pilot valves, slow building or exhausting pilot signals, or excessive moisture or space between operator and valve body, and can be eliminated by correcting these conditions.