"7334800" . "Qualified" . "CONTROL VALVE" . "CONTROL VALVE" . "RDS297539" . "A valve that can be used to modify (regulate) the fluid flow rate in a process control system. It usually includes an actuator, which responds to a signal from the controlling system and changes the position of the flow controlling element in the valve." . "u82237" . "2005.12.21" . .