The Welch 2034 DryFast 0.9 cfm PTFE Diaphragm Vacuum Pump is an ideal solution for rotary evaporators, particularly those using 2L and 5L volumes. It features Advanced Vapor Management (AVM) for precise vacuum control, making it perfect for organic evaporations. With its oil-free, portable, and chemical-resistant design, this pump is low-maintenance and well-suited for tough laboratory applications.

Key Features:

• Oil-Free, Chemical Resistant: Ideal for harsh chemicals and solvent vapors, minimizing maintenance requirements.
• 2-Head Diaphragm Design: Simplifies service and maintenance while enhancing durability.
• Advanced Vapor Management (AVM): Ensures consistent, precise vacuum control during rotary evaporation and distillation.
• Compact and Portable: The pump is lightweight and easily transportable, making it versatile for various lab setups.
• Free Silicone Tubing: Includes three feet of 3/8" premium food-grade silicone vacuum tubing ($19.99 value).

Applications:

• Rotary Evaporation/Distillation (for medium volatility solvents with boiling points below 110°C, volume around 1 liter)
• Vacuum Ovens (for small-scale evaporation and pumping harsh vapors and gases)

Technical Specifications:

• Pumping Rate: 0.9 cfm
• Ultimate Vacuum Pressure: 9 torr
• Maximum Vacuum: 29.6 in. Hg
• Vacuum Connection: 3/8" hose barb
• Adjustable Vac./Gas Ballast: Yes
• Electrical Requirements: 110 or 220 Volts, 60Hz, Single Phase, 0.2 HP, 150 Watts
• Pump Dimensions: 13.8 x 6.8 x 8.8 inches
• Shipping Dimensions: 21 x 14 x 15 inches
• Pump Weight: 21.25 lbs
• Shipping Weight: 25 lbs
• Certification: UL, CSA
• Warranty: One year

The Welch 2034 DryFast offers robust performance for medium-scale laboratory applications, with easy maintenance, high efficiency, and superior vapor handling. It is designed to handle challenging lab environments with minimal downtime.