PRODUCT DESCRIPTION
Fire Resistant Hydraulic Fluid 620 has been meticulously engineered to provide the utmost safety when employed in hydraulic systems situated in proximity to open flames or high-temperature environments.
Hazards loom whenever hydraulic equipment finds itself in close proximity to heat sources, molten metal, or open flames. Even the tiniest fissure in a hydraulic line or fitting can result in a combustible spray of oil being propelled toward the heat source. This, in turn, can lead to severe injuries, property damage, the destruction of machinery and facilities, as well as production delays.
FEATURES
- High Degree of Fire Resistance
- Non-Explosive
- Corrosion Inhibited
- Good Lubricity
- High Viscosity Index – ISO 46 Viscosity
- Stable in Service
- Long Pump Life
- Long Term Economy
- Synthetic Rubber Packings not Affected
- HFC Classification
APPLICATONS
Fire Resistant Hydraulic Fluid 620 can be safely used in virtually every type of hydraulic equipment to help prevent fire danger. Typical applications include –
- Pressure Die-casting Machinery
- Coke Oven Door Mechanisms
- Forging and Extruding Pressures
- Glass Forming Machines
- Furnace Charging & Tilting Mechanisms
- Centrifugal Casting Machines
- Rod and Strip Coilers and Up-enders
- Foundry Machines
- Hoists and Elevators
- Billet, Bloom and Slab Casting Machines
OPERATING TEMPERATURE
It is recommended that the bulk fluid temperature is kept low to avoid excessive water evaporation. Maximum operating temperature should not exceed 60°C.
COMPATIBILITY
Vesta recommends that wherever possible the customer conducts tests on the materials to be in contact with the Fire Resistant Hydraulic Fluid 620.
Pumps & Components: Fire Resistant Hydraulic Fluid 620 can be used in virtually all industrial pumps up to pressures of 210 bar and temperatures less than 60oC. Like other water glycols, however, pumps will have to be de-rated according to manufacturers’ guidelines when converting mineral oil systems to this fluid.
Seals, Hoses & Packing: Recommended sealing materials are nitrile, NBR, Buna N, ethylene propylene (EPDM), acrylonitrile-butadiene, hydrogenated nitrile (HNBR) and poly ether based
polyurethane rubber. Not recommended are fluorocarbon, FKM, Viton (compression set with water based fluids), butyl and polyester based polyurethane (high temperature softening) rubber.
Metals: Fire Resistant Hydraulic Fluid 620 is compatible with most metals and alloys. Systems containing zinc, lead, cadmium and magnesium need to be closely observed in condition monitoring as these generally have limited compatibility with high pH fluids.
Paints & Coatings: Many common industrial oil-resistant paints and varnishes are softened by water glycol fluids. It is recommended to use only phenolic and epoxy type paints and vitreous enamel for the external coating of hydraulic systems. Do not coat the internal surfaces of the equipment.
TYPICAL PROPERTIES:
| Parameter | Unit | Typical Value |
| ISO grade | – | 46 |
| Appearance | – | Red Clear Liquid |
| Viscosity @ 10°C | cSt | 168 |
| Viscosity @ 20°C | cSt | 100 |
| Viscosity @ 40°C | cSt | 43 |
| Viscosity @ 60°C | cSt | 22 |
| Viscosity Index | cSt | >200 |
| pH Value | – | 9.5 |
| Density @ 15°C | g/mL | 1.08 |
| Pour Point | °C | -51 |
| Flash Point (ASTM D92) | – | None |
| Fire Point (ASTM D92) | – | None |
| Thermal Conductivity @ 25°C | Watts/m2(°C/m) | 0.45 |
| Specific Heat @ 25°C and 1013mbar | kJ/kg/°C | 3.23 |
| Normal Maximum Operating Temperature | °C | 60 |
| Compressibility @ 20°C | atm | 3 x 105 |
Available in: 205 Litres
Item Code: VI5-2927
