icon.article.dark Industry news Valves Safe and Reliable Combustion Systems with New Motorized Actuator and Shutoff Valve Solution ASCO Series 148/149 provides safety shutoff service in less than one second for industrial fuel burners, even under extreme conditions. Emerson has introduced the new ASCO Series 148/149 safety valve and motorized actuator designed for industrial fuel oil burner recirculation Lees meer icon.arrow--dark