SES328N-9.25-BP

Liquid Nitrogen Cooled Vacuum Line Water Vapor Cold Trap 

• Portable - Dolly Mounted
• High Efficiency  (-195°C) 
• 9.25 L N2 capacity
• 2.8L Average Trapping Capacity
• Standard Vacuum Line Bypass Piping Assures Continuous Evacuation.
• Convenient Two Wheel Portable Design
• Available in 3" & 4" Vacuum Connections
• Manual Timble Defrost
• Redundant Timble Optional 
• Safety Accessories & N2 Dewer Dispensing Hose Standard

SES328R 

Standalone and system integrated refrigeration system cooled vacuum line water vapor cold traps.

• -80°C Trapping Temperature - (Two Stage Cascade)
• -43°C Trapping Temperature - (Single Stage) 
• Automatic Defrost Cycle
• Standard Vacuum Line Bypass Piping Assures Continuous Evacuation.

Refrigerated cold traps are available with single and two-stage refrigeration systems. Traditional two-stage "cascade" systems produce trapping temperatures of ~-80°C and efficiently trap water vapor at pressures as low as 0.15 torr.  Cascade traps should be positioned at the inlet of the vacuum booster pump.

Less expensive and complex single stage refrigeration system traps are available. Single stage traps produce trapping temperatures of ~-45°C and efficiently trap water vapor at pressures as low as 0.5 torr.  It is recommended that single stage traps be positioned between the vacuum backing pump and the booster where the pressure remains high enough to trap through the entire evacuation pressure range. 

Automatic defrost cycles are included on both versions. The cascade version provides colder surface temperatures making it more efficient at lower pressures. Both systems must be mounted in a separate trailer or packaged with the oil processor trailer.