OPERATION
OF
SERIES PROGRESSIVE
DIVIDER VALVES
Trabon MS/MH, MSP and MG divider valves have no "starting" or "stopping" positions. Like an automobile engine which keeps firing one cylinder after another as long as fuel and spark are applied, the pistons in three or more intermediate sections of the divider valve move back and forth in a continuous cycle, forcing lubricant successively through the several outlets, as long as lubricant is supplied under pressure at the inlet.
The inlet passageway (center channel showh in red) is connected to all piston chambers at all times, but only one piston is free to move at any one time.
Picking up the cycle when all the pistons (A, B and C) are at the far right extremity of their travel, we find that lubricant from the inlet passageway is connected to the left-hand end of Pistons B and C and to the right-hand end of Piston A.
Application of pressure through the inlet passageway, therefore, "locks" Pistons B and C in their right-hand positions, while moving Piston A from right to left (Valve Position 1) - 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 1.
As Piston A moved from right to left, it closed some ports and opened others-so that lubricant feeding down the center channel is now connected to the right-hand end of Piston B. Further application of pressure now "locks" Pistons A and C in their respective positions, while moving Piston B from right to left (Valve Position 2) - forcing the known and measured amount of lubricant in this cylinder chamber into the passageways shown in blue and discharging this known and measured amount of lubricant to the bearing connected to Outlet No. 2.
After Piston B completes its stroke from right to left, it will be seen that a connection is made from the inlet passageway to the right-hand end of Piston C allowing this piston to move from right to left (Valve Position 3)-forcing the known and measured amount of lubricant in this cylinder chamber into the passageways shown in blue and discharging this known and measured amount of lubricant to the bearing connected to Outlet No. 3.
Similarly, it will be seen that with the piston in the 3rd section now in far left position, lubricant feeding down the center channel finds passage to the right along Piston C and through the passages shown in red to force Piston A from left to right (Valve Position 4). . .that lubricant can then pass along Piston A and through the channel shown in red to the left end of Piston B forcing this piston from left to right (Valve Position 5). . .and that lubricant can then pass along Piston B and through the channel shown in red to the left end of Piston C forcing this piston from left to right (Valve Position 6). . .thus forcing known and measured amounts of lubricant from one cylinder chamber after another to the bearings connected to Outlets No. 4, 5 and 6, thus completing the cycle and returning the valve to the original position (Valve Position 1).
