OVERVIEW

Optimum performance & efficiency

Installed to reduce or remove contaminants from compressed air; water separators and filters are essential to the health and performance of a compressed air network. The primary function of any filter is to improve air quality, although modern demands mean this performance should not be at the expense of energy. Using high quality compressed air to supply the nitrogen generators, ensures long and trouble-free service and guarantees optimum performance.

Key Benefits

High efficiency coalescing and dust removal filters

  • For the removal of water and oil aerosols, atmospheric dirt and solid particles, rust, pipescale and micro-organisms
  • Coalescing filter performance tested to the stringent requirements of ISO12500-1 and ISO8573-2
  • Dry particulate filter performance tested in accordance with the requirements of ISO8573-4

Optimum performance & efficiency

A significant amount of research and development has gone into ensuring that Gardner Denver filter housings and elements provide the optimum performance, energy efficiency, operational life and cost of ownership.

Features that provide air quality

The Gardner Denver GDF series range of diecast compressed air filters has been designed from the outset to meet the air quality requirements of all editions of ISO8573-1, when validated in accordance with the stringent requirements of ISO12500-1.

Low differential pressure = Low energy consumption

When designing a compressed air system it is common practice to avoid unnecessary changes in pipe size and air flow direction. Each of these can have significant and adverse effect on the amount of differential pressure created leading to increased energy required by the compressor in order to provide the correct air pressure at its point of use. Gardner Denver filters employ several design features which ensure that this best practice philosophy is carried on through our filter and water separator housings to maximise energy savings caused by differential pressure.

GDWS Condensate Separators

  • For the removal of bulk condensed water and liquid oil
  • Used to protect coalescing filters from bulk liquid contamination
  • High liquid removal efficiencies at all flow conditions
  • Tested in accordance with ISO8573-9

GDFT Oil Vapour Removal Filter

“Technically Oil Free Air” from Oil Lubricated & Oil Free Compressors

  • Air Quality GuaranteeGDFT is matched to all inlet parameters maintaining effective operation for 12 months. Correct sizing ensures seasonal variations in temperature do not affect delivered air quality
  • Suitable for use with oil lubricated and oil free compressorsGDFT provides “Technically Oil Free Air” when used in conjunction with water separators and coalescing filters
  • ISO8573-1 Class 1 for total oil delivered air qualityTested in accordance with ISO8573-5 and 3rd party performance validated by Lloyds Register

Design

GDF Series – Energy efficient by design

Providing an optimal flow path for the compressed air through the filter housing and element is key to reducing system operating costs. Pressure losses in a compressed air filter is a combination of fixed pressure losses and incremental pressure losses. Fixed pressure losses are derived from the filter housing and the interface between the filter housing and filter element. Incremental pressure losses are directly related to the filter element as it blocks up with contamination. In most filters, high operational costs can be attributed to an inefficient air flow path within the filter housing and element and poorly selected filtration media. In addition to this, the high differential pressure “change points” recommended by many filter manufacturers increase operational costs even further.

GDWS Series – Energy efficient by design

  • Wet air enters the inlet port and is directed into the separator module fixed turning vanes causing the air to spin inside the vessel and then change direction as it passes the impinger.
  • A vortex is then created which narrows and intensifies as it reaches the lower part of the separator.
  • Bulk liquid is therefore removed from the air stream due to a combination of: – Directional changes of the air stream. – Velocity changes. – Centrifugal action of the vortex.
  • As the vortex reaches the bottom of the separator module, air is forced through the centre of the vortex.
  • Aerospace turning vanes located in the outlet of the separator module now turn an “inefficient corner” into a number of more “efficient corners” to reduce turbulence, minimise pressure loss and therefore operational costs.


When compressed air is required to meet ISO8573-1 Class 1 air quality via oil free or oil lubricated compressors the GDFT Oil Vapour Removal filter is an essential component of the compressed air system.
GDFT Oil Vapour Removal filters are designed to reduce oil vapour and also overcome the issues of traditional loose filled carbon towers.
Manufactured from extruded aluminium, the GDFT is smaller and lighter than equivalent carbon towers. Compact activated carbon cartridges utilise a unique filling technique to maximise packing density of the adsorbent bed. Retained to prevent movement, 100% of the activated carbon bed is then utilised during operation, guaranteeing performance, whilst the heavy attrition, dusting and blocked particulate filters associated with carbon tower designs is eliminated.
The use of cartridges also provides trouble free maintenance, reducing system downtime.