The VG-D series

Plastic housing Activated carbon 3μm filter Silica gel Slosh protection Demister Connection Pre-filter disk

GIEBEL Adsorbers® of the VG-D series are disposable oil mist separators without valves. They are suitable for indoor and outdoor use on hydraulic power packs, gearboxes, barrels & IBC.
The plastic housing is filled with 0.1kg to 3.0kg of activated carbon. Combined with a slosh guard and oil demister, the activated carbon cleans the air exiting the unit, protecting the environment from oil aerosol contamination. When the adsorber is saturated (discoloration of the white silica gel layer), it is replaced. VG-D adsorbers are used on turbo gearboxes, test benches and recirculating oil lubrication systems.

Move the mouse pointer over the blue highlighted adsorber components of the VG-D and learn which task they perform in the adsorber.

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Mode of operation

Adsorbtion – Separation of oil particles

The level in the system increases
Oily air is squeezed out
Slosh protection and demister prevent oil drops and finer oil particles from escaping from the system
Glass fiber filter separates further particles
Activated carbon absorbs finest oil aerosols

Oil-free exhaust air

Desorption – Filtration of supply air

The level in the system decreases
Polluted air is sucked in
Pre-filter disc prevents the ingress of larger dirt particles
Air flows pressureless into adsorber
Glas fibre filter filters air to 3μm

Dry and clean supply air

Technical Data

Flowchart

Excess pressure in the system forces the air through the two-stage slosh protection. Here, the large oil particles are blocked and drip back into the system. The subsequent demister is used for condensation of larger oil particles, which stick to it, condense and also drip back.

Finer particles are separated at the 3µm glass fiber filter and returned to the tank. Only the finest oil aerosols end up in the high bulk activated carbon. The 4mm cylindrical pellets adsorb all remaining particles and thus protect the environment from contamination. At the end of the adsorber life cycle, the bottom white silica gel layer turns a brownish oil-like color, indicating the end of the operating interval.

Due to the valveless design and multi-stage separation, this adsorber has a high efficiency for separating particles from the system to the environment and a low differential pressure.

VG-D adsorbers are made of polycarbonate, polyamide, activated carbon as well as FKM seals and can be used for the deaeration of all common hydraulic and gear oils, lubricants, fuels and isocyanates.