PL 54/55 lubrication systems provide a positive flow and pressure of pressurized or unpressurized barrier/buffer fluid to dual seals. This seal support system type is typically preferred where flow and heat removal capacity exceeds that of API Plan 52 or 53 seal support systems.Note: API Plan 54 and 55 designations apply to the barrier/buffer fluid circuit and not to the external system.
10, 20, 30 US gallons/50, 80, 120 liters
1.5-5 gpm/5.5 to 18 lpm
3000 psi(g)/200 bar(g)