All thermoplastic air actuator [ "air x air actuation" or "air x spring actuation"] to be mounted directly on the Plast-O-Matic 3-Way Ball Valve. The actuator shall be of plastic design to eliminate atmospheric corrosion and to lessen the total weight. All units are to be 100% individually tested at the factory. As manufactured by Plast-O-Matic Valves, Inc., Cedar Grove, NJ.