This from Dan Shevlin:
Still & Box 1711 N KimballStill Time : 0546Box Time : 0555 by the 12th1711 Kimball was the original fire building 2 story frame 25 x 50 , communicating to 1709 Kimball 3 story frame 25 x 50 . Fire in the attic . Several hand lines . Tower Ladder 14 was put to work on the attic of the exposure . More photos @ chicagofirerover.smugmug.com . thanks Dan Shevlin
Dan Shevlin photo
Dan Shevlin photo
Dan Shevlin photo
Dan Shevlin photo
Dan Shevlin photo
Hydraulic oil is a fluid that has several functions. It serves as an energy transfer or power transmission medium, lubricant, and sealant. Also, it is a fluid that cools the equipment and carries contaminants away.
Based on the division of hydraulics into hydrodynamics and hydrostatics, we have different hydraulic fluids. Firstly, hydraulic fluids for hydrodynamic applications are called power-transmission oils. Secondly, hydraulic fluids for hydrostatic application are called hydraulic oils. Moreover, in the latter application, applied pressures are high and the flow rates are low. That is why hydraulic oils have to be non-compressible fluids that transfer power within a system or piece of equipment.
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