WELCH Self-Cleaning Vacuum System 2026, Laboratory Vacuum Pump, WELCH (CAT#: STEM-DS-1746-LC)

The WELCH Self-Cleaning Vacuum System manufactured by WELCH is a complete oil-free dry vacuum system for use with rotary evaporator and concentrator.
The corrosion-resistant diaphragm vacuum pump system made from PTFE provides excellent control and efficiency for every evaporation.
Provide up to 5 L of controlled solvent stripping in the flask.
Including analog gauge and vacuum adjustment.
Inlet and exhaust separators provide protection for both the pump and laboratory environment.

Type: Laboratory Vacuum Pumps
Free Air Displacement m3/hr (l/min.) @50Hz: 1.2(35)
Ultimate Pressure: 1.8(29)
Max Pressure PSIG (pascal): 29.85
Adjustable Vac. / Gas Ballast: 1/5
Tubing Needed: Yes
Intake Thread NPT: 1/4
ISO Exhaust / Intake Flange: 3/8
Overall Dimensions LxWxH in. (cm): 13.6x12x11.3 (34.5x30.5x28.7)
Ship Weight: 36(16.3)
Intake Catch Jar: Yes
Exhaust Catch Jar: Yes

Automatic self-cleaning purge ensures efficiency and extends service life
Free air displacement: 35 L/min (1.2 CFM)
Incremental ballast switch allows rapid response to bumping / foaming

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