Coalescing filter PiW 2175

coalescing filter
coalescing filter
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Designed for
water, hydraulic, oil, fuel
Filtration method
for hydraulic applications, separation
cast iron
Fluid specification
Other characteristics
in-line, low pressure
Operating pressure

16 bar (232.06 psi)

Fluid temperature

Max.: 90 °C (194 °F)

Min.: 5 °C (41 °F)


The Coalescer filter has been specially designed to separate water from hydraulic fluids, diesel and marine diesel oil. - According to VDMA standard sheet 24568, the amount of water in HE pressure fluids has to be kept below 1000 ppm (0.1 %). HLP fluids should not contain any free water at all. Free water always causes turbidity which can be seen by the human eye. Physically, turbidity is a two-phase mixture (emulsion) in which small droplets of water are present in the pressure fluid. For this reason, it is advis- able to carry out a mechanical separation of these water droplets; this technique is based on the coalescer - principle. The droplets are collected in various layers and brought together into larger units. The water drops thus formed are several milimetres in diameter


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