The chemically-resistant series N840-3FT (34 L/min) and N840-1-2FT (65 L/min) are Double-Head, oil-free devices used in a wide range of laboratory and OEM applications. The heart of these very compact pumps are KNF structured diaphragms. These patented diaphragms were stress optimized using the Finite Elements method. As a result, the pumps are more compact while increasing the service life of the diaphragm.
They transfer and pump down without contamination.
The chemically-resistant series N840-3FT-40 diaphragm pumps are a Twin-head unit with an integrated KNF self-drying system for saturated Vapors. There are a wide range of applications for this pump, especially when clean vacuum is required and moist gases must be pumped down.
Examples include vacuum-drying of vacuum oven chambers (for drying or heat-treating substances and components) or steam sterilizers for sterilizing instruments, vessels, filters and textiles. Due to its high resistance to aggressive media, this pump can be used universally.
The KNF PowerDry® system allows condensed liquid to be blown out of the pump heads at high speed during evacuation. The vacuum in the vessel is not disturbed. The drying cycle can be adjusted to the requirements of the individual process using three variables. After drying, the pump reaches a better vacuum and is able to evacuate significantly faster compared with pumps without a drying system.
Materials in contact with flow media: Pump Head - PTFE / Diaphragm - PTFE-Coated / Valves - FFPM
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Features:
- Flow Rate (max.): Available for 34 L/min or 65 L/min
- Pure transfer, evacuation and compression
- Highly compatible with vapors and condensation
- Chemically-resistant, suitable for aggressive or corrosive gases and vapors
- Pump Head - PTFE ; Diaphragm - PTFE-Coated ; Valves - FFPM
- Maintenance-free
- Environmentally friendly
- Gas tight, leakage rate approximately 6 x 10-3 mbar x l/s, not tested in serial production
- Motors with other voltages and frequencies on request
Technical Specs:
User Manual & Documentation:
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