Protect your Welch Pump with a Pre-Pump Protection Vacuum Trap. Each trap provides protection by condensing vapors. Welch offers multiple types of traps that will work for your vacuum application which may include freeze dryers, vacuum manifolds, Schlenk lines, or concentrators.
Protect your Welch Pump with a Pre-Pump Protection Vacuum Trap. Each trap provides protection by condensing vapors. Welch offers multiple types of traps that will work for your vacuum application which may include freeze dryers, vacuum manifolds, Schlenk lines, or concentrators.
Contains large alkaline element for neutralization
For high vapor loads, place a cold trap between acid neutralization trap and pump
1420H-20 Features:
Used for High Flow Pre-Pump Protection
Made for DN 25 KF (NW25) connection
For pump FAD 101 to 500 L/min (6 to 30 m3/h)
1420H-21 Features:
Used for Low Flow Pre-Pump Protection
Made for DN 16 KF (NW16) connection
For pump FAD less than 100 L/min (6 m3/h)
1420H-14 Features:
Removable center making trapping surface easy to clean
Has a large, 3 quart (2.8 liters) center well for the dry ice/isopropyl alcohol slurry or liquid nitrogen
Traps up to 1.5 liter condensate
Uses dry ice or liquid nitrogen as a refrigerant
With dry ice, cold temperature may be maintained for up to 12 hours depending upon the vapor load
With liquid nitrogen, cold temperature can be maintained for up to 2 hours depending upon the vapor load
Recommended and effective foreline cold trap for freeze dryer, Schlenk line, concentrator, vacuum manifolds, and vacuum oven
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