Plan 53B

Description:
Pressurized barrier system with pressure maintained by a bladder accumulator
Features:
- Circulation is maintained by a pumping ring when equipment is energized, by thermosiphon effect when idle
- Barrier fluid and pressurized inert gas are kept separate by the bladder
- Heat is removed from the system by a heat exchanger (air or water cooled)
- Stand alone system does not rely on a centralized pressure source
- No media leakage to the atmosphere
- Seal life optimized by maintaining clean fluid film between the seal faces
For use:
- Where no leakage to atmosphere is allowed; hazardous, flammable, toxic fluids
- For dirty, abrasive or polymerizing fluids where media is unsuitable as a lubricant for the inboard seal faces
Caution:
- There will always be some leakage of barrier fluid into product – verify compatibility
- Heat dissipation is totally dependent on cooler efficiency as there is low volume of barrier fluid in system
- Always recharge bladder to 0.9 times the working pressure
- Vent the system properly before start up
- Barrier fluid contamination can cause corrosive degradation of equipment