FM-60/100 Fire-Resistant Series

What it removes

Water, gas and particulate from fire-resistant hydraulic fluids -- fatty-acid-ester (HFC) and water-glycol (HFC) types -- which are chemically nothing like mineral oil and cannot be run through a purifier built for it. Two models cover the two chemistries, at flow rates of 60, 100 and 150 litres per minute.

How it works

The separation principle is the same; the materials are not. A water-glycol fluid is largely water by design, so dehydration has to be controlled far more carefully than on mineral oil -- pull too hard and you remove the water the fluid needs to stay fire resistant. A fatty-acid-ester fluid is the opposite problem: it hydrolyses if water is left in it, and the hydrolysis products attack seals and valves. Matching seals, hoses and control logic to the chemistry is the actual engineering content of this product.

Where it is used

Steel plants, die-casting shops and anywhere a hydraulic system sits near a furnace or a hot surface and the fluid choice was driven by fire risk rather than by performance. A steel plant holding its fatty-acid-ester fluid at 800 ppm is the reference case: the fluid stayed in service because the water could be controlled, not because it was replaced often enough.

Options and service

Chemistry-specific seals and hoses, stated on the drawing and not interchangeable between the two models. Water content monitoring on the outlet, because on a water-glycol fluid the target is a band, not a minimum.