DD Valves are dual line valves that are completely hydraulic in operation. They will deliver either oil or grease, are fully and individually adjustable in regard to discharge quantity and are equipped with operational indicators. Each DD valve serves two bearings. However, by a simple method of cross-porting, it will serve one. For example, a four-valve block can actually serve anywhere between four and eight bearings.

DD valves can be supplied in several basic discharge capacities and are available in blocks consisting of one, two, three or four valves.