Diaphragm Vacuum Pump N938.50 KT.18 in Pumps, Compressors

KNF LABOPORT Mini Diaphragm Vacuum Pump N 938.50
Series N 938.50 diaphragm pumps are double-head, dry-running devices used in a wide range of laboratory applications. They transfer and pump down without contamination. The pumps are equipped with parallel and series connection for the pump heads – resulting in a high pneumatic performance, a durable product and compact size. Special valves ensure that the product can cope easily with vapour and condensation. The pumps are available in various versions differing in the materials which contact the media.
Technical features

  1. 100% oil-free transfer
  2. Pure transferring and evacuation of gases
  3. Version for slightly aggressive or corrosive gases and vapors
  4. Maintenance-free
  5. Environmentally friendly
  6. High level of gas tightness
  7. Model of pump: compressor laboratory pump diaphragm pump
  8. Max. Conveying capacity: 1,92 m³/h
  9. Shipping weight: 10,00 Kg
  10. Product weight: 6,80 Kg


Type/Models N 938.50 KN.18 N 938.50 KT.18
Delivery (l/min)1) 32 30
Ultimate vacuum (mbar abs.) 12 15
Operating pressure (bar g) 0.5 0.5
Connectors for tube (mm) ID 10 ID 10
Permissible gas and ambient temperature +5…+40 °C +5…+40 °C
Mains 230V/50Hz 230V/50Hz
Motor protection IP 20 IP 20
Power P1 110 W 110 W
Operating current 0.6 A 0.6 A
Weight 6.8 kg 6.8 kg
Dimensions L x H x W (mm)
With thermal switch and power fuse
317/212/110 317/212/110

1) at atm. pressure

Material in contact with the pumped media

Type Pump head Diaphragm Valves
N 938.50 KN.18 PPS EPDM EPDM
N 938.50 KT.18 PPS PTFE-coated FFPM


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