Hydraulic Terms W speaks hydraulic phrases W and hydraulic glossary W to words and phrases which are in common use in the hydraulics industry.
Water Base Fluid Water was the fluid first used in the first hydraulic systems. Water had several disadvantages as far as lubrication was concerned but did not burn. However water based fluids had no lubrication capability.
Water Cooler A water cooler basically consists of a bundle of tubes encased in a metal shell. In this cooler, a system’s hydraulic fluid is usually pumped through the shell and over the tubes which are circulated with cooling water.
Water Glycol Fluid Water glycol fire resistant fluid works well at low temperature. It consists of water and glycol which has a chemical structure very similar to antifreeze. Water glycol is often dyed red or pink, normally consists of 60% glycol and 40% water and has a chemical thickner to increase its viscosity. The glycol actually mixes with the water. The fluid is actually homogenous and not two phase like an emulsion.
Water Oil Emulsion A water base fire resistant fluid is not a mixture as water and oil do not mix. Oil is broken down into extremely small droplets usually by a chemical emulsifier. Oil droplets are carried around by the water which increases its lubricating qualities. If the fluid is exposed to fire, the water turns to steam extinguishing the flame.
Wet Armature Solenoid Wet armature solenoids are relatively new arrivals on the industrial hydraulic scene. They are preferred to air gap due to their increased reliability resulting from better heat transfer characteristics and elimination of pushpin seals which in an air gap solenoid have a tendency to leak.
Work Work is the application of a force to cause movement of an object through a distance. Work equals distance moved times force exerted.
Working Energy This energy used by a machine and is usually in a working form which is characterized by an accompanying pressure. The pressure is the result of the force of kinetic energy being applied to a resistant object. Working energy is the combination of kinetic energy and pressure.