HFA or high water content fluids (HWCF’s) are hydraulic fluids that combine the excellent fire resistant properties of water with lubrication and corrosion protection from an additive concentrate. Because water is the major component (90% or more) of an HFA fluid, hydraulic equipment using this type of fluid must be capable of operating with a low viscosity fluid. Water hydraulic equipment, while able to operate with water as the hydraulic medium, will benefit from the use of an HFA concentrate. HFA concentrates lubricate valves, improve seal life, inhibit corrosion in components and piping, and control bacterial and fungal growth in the system. HFA fluids are ideal for use in steel mills, underground longwall mining equipment, and any other hydraulic system designed for water hydraulic equipment.
Quaker markets low mineral oil containing HFA-E fluids (QUINTOLUBRIC® 807 and 814 Series) and synthetic HFA-S fluids (QUINTOLUBRIC® 807 and 818 Series) that are globally available and give outstanding performance in stability, corrosion protection and bio-resistance.
ISO 6743/4 specifies two types of HFA fluids:
- HFA-E: Oil in water emulsions: water content greater than 80%.
- HFA-S: Synthetic aqueous solutions, water content >90%;
common in-use concentrations range from 1-5%