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Hydraulic Fluid Formulas

Hydraulic Fluid Formulas For: Word Formula Letter Formula
Velocity Through Piping
In Feet/Second Velocity
Velocity =velocity fluid formulas V = velocity
Compressibility of Oil
In Additional Required Oil To Reach Pressure
Additional =
add volume formulaVolume
VA = add_volume
* Approximately 1/2 % per 100 psi
Compressibility of a Fluid Compressibility =compressibility fluid formula C(ß)=compressibility formula
Specific Gravity of a Fluid Specific =
specific gravity formulaGravity
SG =specific_gravity
Valve (Cv) Flow Factor Valve Factor (Cv) =
valve factor cv
Cv = valve_factor_cv
Viscosity in Centistokes For Viscosities of 32 to 100 Saybolt Universal Seconds:
Centistokes = .2253 x SUS – centistokes
CS = .2253 SUS –centistokes
Viscosity in Centistokes For Viscosities of 100 to 240 Saybolt Universal Seconds:
Centistokes = .2193 x SUS – centistokes
CS = .2193 SUS –centistokes
Viscosity in Centistokes For Viscosities Greater Than 240 Saybolt Universal Seconds:
Centistokes = centistokes
CS = centistokes

HYDRAULIC FLUID FORMULAS NOTE: Saybolt Universal Seconds is often abbreviated SSU.