Vogelsang VX Series, Manual

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Rotary lobe pump
Operating instructions
VX100Q, VX136Q..QD..QDM2, VX186Q..QD..QDM2, VX230Q..QD
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7.2.5 Dry buffer chamber
This sealing system is only used if buffer chamber fluid must not get into the pump medium.
It is used for pumps that pump pure, non-abrasive media, e.g. water.
Health hazard from contamination
Attention! In order to avoid contamination of the pump medium on pumps with a dry buffer chamber as a
sealing system,
no fluid may be added into the buffer chamber.
Gearbox oil grade for dry buffer chambers
Medical white oil (part no. BSS.010) can be used as gear oil in these pumps

Chapter "Oils and
lubricants".
Attention! BSS.010 oil is not permitted for high performance applications and continuous operation over a
maximum of 50% of the permitted pump pressure. Please contact us

.
Avoid dry running
To protect against seal damage, dry running of the pump must be avoided on pumps with a dry buffer
chamber. Before start-up, remove the plug from the vent screw (5)

Fig. "Installation example - dry buffer
chamber" and completely fill the pump chamber with fluid.
Combination of mechanical seal rings in this sealing system
Type of construction: Block ring
Mating materials: AISI 304/AISI 316 Ti tungsten carbide coated/coal