VALVE POSITION 4

Lubricant from the inlet passageway, shown in red, is connected to the right-hand end of Pistons B and C and to the left-hand end of Piston A. Application of pressure through the inlet passageway, therefore, "locks" Pistons B and C in their left-hand positions, while moving Piston A from left to right - forcing the known and measured amount of lubricant in this cylinder chamber into the passages shown in blue and discharging this known and measured amount of lubricant to the bearing connected to Outlet No 4.

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- Inlet Flow

- Outlet Flow

- Inactive