Page 33 - Power Service - A DistributionNOW Company - Products & Services Guide
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REFERENCE TABLESFORMULAS• Head (ft.) = (psi x 2.31) / sp. gr. = (in. Hg.) / (sp. gr. x .88)• PSI = (head (ft.) x sp. gr.) / 2.31 = (.49 x in. x Hg.)• Velocity (ft./sec.) = (0.4085 x gpm) / [i.d. (in.) of pipe] ^ 2• BHP (Centrifugal) = (GMP x head (ft.) x sp. gr.) / (3960 x pump eff) • BHP Positive Displacement = (GMP X PSI) / (1715 x pump eff.)CONVERSIONSAPI GRAVITYThe gravity/density for liquid petroleum30Weight of Water8.34 lb./gal. or 62.37 lb./cu. ft @ 60 degrees1 lb./sq. in.2.31 ft. water (1.0 sp. gr.)BPH x .7GPMBPD x .0292GPM1 BBL. (petroleum)42 gallons (U.S.)1 ft. water.433 PSIAtmospheric Press14.7 psi or 33.9 fr. fresh water @ sea level1 inch of mercury (Hg) vacuum1.133 ft. waterDynamic Suctions Lift (ft.)Vacuum in inches of Hg. / (0.883 x sp. gr.)Degree APISpecific GravityWeight(lb/US gal)(kg/m3)81.0148.448101291.0078.3881005101.0008.328998150.9668.044964200.9347.778932250.9047.529902300.8767.296874350.8507.076848400.8256.870823450.8026.675800500.7806.490778550.7596.316757580.7476.216745Visit us today at www.PowerServiceInc.com or call 800.743.4774 for more information.REFERENCE TABLES


































































































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