Basic Hydraulic Formulas

Formula For:	Word Formula:		Letter Formula:
FLUID PRESSURE in Pounds/Square Inch	PRESSURE  = FORCE(pounds) UNIT AREA(Square Inches)		P  = F A or PSIG  = F A
FLUID FLOW RATE in Gallons/Minute	FLOW RATE  = VOLUME(Gallons) UNIT TIME(Minute)		Q  = V T
FLUID POWER IN HORSEPOWER	HORSEPOWER  = PRESSURE(PSIG)  x  FLOW(GPM) 1714		HP  = PQ 1714
VELOCITY THROUGH PIPING in Feet/Second Velocity	VELOCITY  = 0.3208  x  FLOW RATE THROUGH I.D.(GPM) INTERNAL AREA(Square Inches)		V  = .3208Q A
COMPRESSIBILITY OF OIL in Aditional Required Oil To Reach Pressure	ADDITIONAL VOLUME  = PRESSURE(PSIG)  x  VOLUME OF OIL UNDER PRESSURE 250,000(approx.)		VA  = PV 250,000
COMPRESSIBILITY OF A FLUID	COMPRESSIBILITY  = 1 BULK MODULUS OF THE FLUID		C  = 1 BM
SPECIFIC GRAVITY OF A FLUID	SPECIFIC GRAVITY  = WEIGHT OF ONE CUBIC FOOT OF FLUID WEIGHT OF ONE CUBIC FOOT OF WATER		SG  = W 62.4283