Diaphragm pumps of the NT-series are oilfree dry running pumps for the generation of vacuum as well as the delivery and evacuation of gases and vapours. In chemical laboratories they are the more powerfull and modern alternative to water jet pumps, because they are more friendly to the environment at minimized operation and maintenance costs. Typical applications: on vacuum drying chambers, for distillation, drying, and vacuum filtering but also as backing pump for turbo-molecular pumps, gas transfer and the like. The pumps produce little noise and vibrations and are therefore ideal for installation in sensitive devices (e.g. chemical analysis).
Advantages
There are one-, two- three- and four-stage pumps available. The vacuum performance has been increased considerably, which expands the application field for both laboratory and industrial use. The one-stage pumps are designed for an ultimate vacuum of 70 mbar, the two-stage pumps for 7 mbar, the three-stage pumps for down to 1 mbar and the four-stage pumps for 0.5 mbar. International Protection code for all NT models is IP 42 (except those with switchable dual-voltage motors). The NT pumps are designed very compact and are exceptionally quiet and smooth-running. Smooth housing surfaces (except for the two-cylinder aluminium version) make the NT diaphragm pumps easy to clean. On the whole the pumps work almost maintenance-free. All models have easily changeable valves and diaphragms.
