Welch DuoSeal 1405 Rotary Vane Vacuum Pump

Full Description

This is a listing for a Welch DuoSeal 1405 Rotary Vane Vacuum Pump. Unit is in used good cosmetic condition. Unit was tested for basic functionality. Verified the unit powers on, initializes, and creates vacuum when running. No known issues were recorded. Sold as is. Two-Stage Mechanical Design: Features two internal rotors linked in a series. The first stage handles the volume displacement, while the second stage cleanses the vacuum down to its ultra-deep limit. Low-Speed V-Belt Drive (525 RPM): Runs at less than one-third the speed of standard direct-drive pumps. This slow rotation radically minimizes friction, suppresses heavy vibrations, and limits operational noise in tight lab spaces. Over-Sized Oil Reservoir: Holds a substantial 2.25 quarts of fluid. This massive volume isolates, cools, and dilutes corrosive process chemicals or aggressive vapors, preventing early internal corrosion. Adjustable Gas Ballast Valve: Equipped with a manual vent to deliberately ingest small amounts of air. This process purges trapped water vapor and volatile solvent condensates cleanly out of the pump oil without degrading your ultimate vacuum depth. Heavy-Duty Cast Iron Castings: Manufactured from rugged, industrial-grade metals. The entire block is engineered to withstand harsh chemical environments and can be completely rebuilt and re-machined multiple times for a lifetime of service. High Water Vapor Tolerance: Specially tuned internal clearances give it excellent performance metrics even when continuously dealing with the elevated moisture loads found in freeze-drying and distillation operations. Type: Two-Stage, Belt-Driven Rotary Vane Oil Pump Free Air Displacement: 3.2 CFM (90 L/min) @ 60Hz Ultimate Total Pressure: 1 x 10⁻⁴ Torr (0.00013 mbar) Motor Speed: 525 RPM Motor Specs: 1/2 HP, 115V, 60Hz, Single Phase Oil Capacity: 2.25 Quarts (2.1 Liters) Intake/Exhaust Connection: 1x NPT threads / hose barb adapter Voltage requirements: 115VAC 60hZ LxWxH: 20" x 16" x 19" Weight: 79lbs Unit sold as pictured above. ***For assistance with shipping or scheduling in person and 3rd party appointments please email Rachel Kessler at rkessler@tryc2.com. You are required to contact us to make your arrangements for removal within 10 business days of the auction's end or your lot will be defaulted.*** R2 CODES: C4 USED GOOD F4 HARDWARE FUNCTIONAL NON-DATA BEARING