Plan 53C

Description:

Pressurized barrier fluid system with pressure maintained and fluctuations compensated for in the seal circuit by a piston type accumulator

Features:

• Circulation is maintained by a pumping ring when equipment is energized, by thermosiphon effect when idle
• Heat is removed from the system by a heat exchanger (air or water cooled)
• Seal life optimized by maintaining clean fluid film between the seal faces
• No media leakage to the atmosphere
• Allows use of double seals lacking reverse balancing feature at the inboard seal when there is variable seal chamber pressure

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
• Maintains constant pressure differential between the seal pot and the seal chamber (process) where pump pressure varies during operation

Caution:

• Connect reference line from the seal chamber to accumulator and keep it open
• There will always be some leakage of barrier fluid into product – verify compatibility
• Vent the system properly before start up
• Barrier fluid contamination can cause corrosive degradation of equipment