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To achieve best results with our valves, contactless dispensing is carried out directly from the sapphire nozzle. For certain media and other applications, an elongated, needle-shaped nozzle can be used.
The adapter nozzles consist of a precision cannula, which is fastened in a holder with a threaded sleeve. The materials of the adapter nozzle are exclusively stainless steel and PEEK. This unit can simply be placed over the valve and screwed into the valve holder. The nozzle tube is centered exactly in front of the valve nozzle and allows a nearly deadvolume free connection. When the adapter nozzle is tightened, the special shape of the parts creates a reliable seal to the valve.
1. Adapter nozzle tube (precision cannula)
2. Adapter nozzle holder
3. Thread sleeve
4. Micro valve of the “cylinder” mounting type
The semi-touching application is suitable if the media drop needs to be gently placed or if the tearing of a drop is not achieved in contactless dispensing (e.g. special pasty media).
Contactless jetting is also possible. If larger drops (µl range) are required to be placed, we recommend a large adapter nozzle in combination with a small valve nozzle.
Certain applications require media to be aspirated or pipetted (pick and drop). Also in the aspiration mode, the precision of the SMLD microvalves allow a controllable media intake down to the nl range.
The adapter nozzles are available in two basic types: cylindrical or tapered end. The adapter nozzle is defined by three main parameters; Outside-Ø (D), Inside-Ø (d) and the nozzle length (L). The available variants are listed below. We are happy to produce other variants on request.
For more information or a demonstration