KNF Mini Diaphragm Vacuum Pump 13 l/min Flow Rate

KNF LABOPORT UN811KVP Mini Diaphragm Vacuum Pump – 13 L/min Flow Rate

The KNF LABOPORT UN811KVP is a chemically resistant, oil-free mini diaphragm vacuum pump engineered for premium performance across a broad spectrum of everyday laboratory applications. Generating a maximum flow rate of 13 L/min and an ultimate vacuum depth of 100 mbar (abs.), this dry-running system provides a clean, contamination-free vacuum environment without the maintenance overhead of oil-lubricated configurations. Its corrosion-resistant fluid path components are purpose-built to safely handle aggressive solvent vapors and wet condensates without sacrificing service life.

Technical Performance & Design

• Chemically Inert Fluid Path: Fabricated with a premium Polyphenylene Sulfide (PPS) pump head, a structured PTFE-coated diaphragm, and FPM (Viton™) valves, offering excellent resistance against corrosive laboratory gases and vapor streams.
• Patented Structured Diaphragm: The core diaphragm geometry was stress-optimized using finite element methods, maximizing air-displacement efficiency while substantially prolonging operational runtime before replacement intervals.
• Wet Vapor Tolerance: Multiport valve dynamics tolerate occasional liquid condensate pooling inside the head assembly, allowing the unit to pull vacuum on damp media without risking internal liquid lock or mechanical degradation.
• Maintenance-Free Compact Footprint: Weighing just 2.5 kg with an incredibly small physical envelope, this 100% dry-running pump requires no fluid top-offs, oil filter monitoring, or ballast adjustments.

Product Specifications

• Model Series / SKU: LABOPORT® UN811KVP / UN 811 KVP
• Maximum Flow Rate (Free Air Displacement): 13 L/min (approx. 0.46 CFM)
• Ultimate Vacuum (Max Depth): 100 mbar (abs.) / 75 torr
• Maximum Operating Pressure: 0.5 bar (rel.) / 15 psig
• Pump Head / Valve Metallurgy: PPS (Ryton™) Head / FPM (Viton™) Valves
• Diaphragm Composition: PTFE-Coated Elastomer
• Tubing Connection: Fits 1/4-inch (approx. 6 mm) Inside Diameter (ID) flexible vacuum hose
• Electrical Architecture: 115V AC, 60Hz, Single Phase (Standard IP20 Enclosure Rating)
• Physical Dimensions (L x W x H): 187 x 90 x 157 mm (approx. 7.4 x 3.5 x 6.2 inches)
• Total Weight: 2.5 kg (5.5 lbs)

Key Benefits & Applications

• Laboratory Vacuum Filtration: Provides steady, smooth displacement for disposable bottle-top filters, multi-branch manifolds, and Buchner funnel setups up to 1 Liter capacity.
• Fluid Aspiration & Decanting: Ideal for maintaining continuous, moderate draft arrays inside biological safety cabinets to safely draw waste media from tissue culture wells and plates.
• Solid-Phase Extraction (SPE): Delivers the strict, uniform differential pressures needed to draw solvents through extraction cartridges at controlled elution velocities.
• Ambient Air Sampling & Degassing: Frequently utilized to evacuate gas bubbles out of analytical solutions, low-viscosity resins, or to feed uniform air streams to continuous processing monitors.

Used, tested to be in great working condition.

LABOPORT® is a registered trademark of KNF Neuberger GmbH. For routine maintenance or validation cycles, matching KNF factory spare parts kits (Part No. 074178) containing replacement diaphragms and valves are available independently.