Welch 2026 Self-Cleaning Dry Vacuum Pump – 35 L/min PTFE Diaphragm System – Excellent Condition

Unit is in excellent cosmetic and working condition — removed from a lab, cleaned, tested, and ships securely packaged.

The Welch 2026 Self-Cleaning Dry Vacuum System is a robust, oil-free diaphragm pump designed for evaporative processes like rotary evaporation and solvent stripping. It uses PTFE wetted surfaces and an automated purge cycle to maintain performance in solvent-rich environments.

Specifications & Features

• Free air displacement: 35 L/min (≈ 1.2 CFM) at 60 Hz
• Ultimate vacuum: ~2 Torr (≈ 2.7 mbar)
• Built-in vacuum regulator and analog vacuum readout
• Self-cleaning purge activates at shutdown to expel condensed vapors
• Gas ballast / anti-bumping functionality
• PTFE diaphragm and chemically resistant internal construction
• Intake port: ¼″ NPT; Exhaust port: ⅜″ NPT
• Dimensions: ~13.6 × 12 × 11.3 in
• Weight: ~30 lbs
• Wired for 115 V, 60 Hz

Applications

• Rotary evaporation, solvent removal, concentration
• Vacuum drying, degassing, and other lab vacuum tasks
• Laboratories working with volatile or corrosive solvents

Condition

• Pre-owned unit in excellent cosmetic and operational condition
• Diaphragms, valves, and purge function tested
• Clean internal paths, no visible damage or corrosion
• Ships securely packaged to protect pump mechanics