Phosphate Esters are very stable synthetic fluids and are known to be "fill for life" fluids. While the broad range of common seals are compatible with the new Phosphate-Esters, for dynamic seals, neoprene should be avoided. The use of appropriate hoses and paints need to be discussed with the fluid supplier. The painting of the interior of reservoirs is not necessary. Because of their greater specific gravity (1.15 compared with mineral oil at 0.85) and their relatively poor Viscosity Index (V.I.), they require close attention to piping arrangements and temperature control. They have better heat exchange properties. Relatively speaking they are more expensive. In spite of these shortcomings, they offer a wide spectrum of usage. Under proper design and operating conditions, they will perform better than mineral oil. This is due to the very good oxidation stability and long operating life of the product - fill for life. It has extremely good lubricity (used as ashless EP additives in modern hydraulic oils) and can operate at all operating pressure ratings.
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Change
from water glycol to phosphate ester hydraulic fluid |
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Change
from mineral oil to phosphate
ester hydraulic fluid |
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Change
from polyol ester to phosphate ester hydraulic fluid |
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Fire
Safe Fluid Guide The information contained under different section
headings in this guide is applicable in other sections. For example, the
information on Fluid Management under the Fire Resistant Hydraulic Fluid
section are applicable to all other sections. Likewise, the fire prevention guidelines under the
Heat Transfer Section is applicable in all other sections. |