Engineering & Design Data

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7Water VelocitiesVelocities for water in feet per second at different GPM's and pipe inside diameters can be calculated as follows:Where: V = velocity in feet per secondG = gallons per minuteA = inside cross sectional area in square inchesCAUTION: Flow velocities in excess of feet per second are not recommended for closed-end systems. Contact Spears Technical Services for additional & Design Data FLOW VELOCITY & FRICTION LOSSFriction Loss Through FittingsFriction loss through fittings is expressed in equivalent feet of the same pipe size and schedule for the system flow rate.

V Valves for Select Spears® Valves and Strainers Pressure Drop In Valves & Strainers Pressure drop calculations can be made for valves and strainers for different fl uids, fl ow rates, and sizes using the CV values and the following equation: Where: P = Pressure drop in PSI; feet of water = PSI.4332 G = Gallons per minute C

  Strainers