Universal (Bulls-Eye) Sight Feed Valves allow visual observation of the liquid stream from a distance, with the volume of flow controlled by an adjustable needle valve. The bulls-eye sight feed valve has excellent flow characteristics with low pressure drop. These units are principally used on gravity or pressure lubricating systems of larger machinery where considerable capacities of oil must be dispensed. The sturdy construction makes them especially suitable for paper mill machinery, steel mills, rolling mills, sugar mills, steam and gas engines, gear units, etc. Their use can be extended to any application requiring adjustable, visible flow control.