Velocity and pressure drop in hydraulic hoses and pipes

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Application guidelines and formulas:
Friction between the hydraulic fluid flowing through a conductor (pipe, tube or hose) and its inside wall causes losses, which are quantified as pressure drop. Pressure drop is influenced by a number of factors including the velocity of the fluid through the conductor, which is dependent on flow rate and cross sectional area. Velocity and pressure drop in conductors are important considerations for fluid power designers especially in systems where long pipe or hose runs are necessary. The following document contains practical information that includes recommended fluid velocities for hydraulic systems, flow/velocity nomograms and formulas for calculating velocity and pressure drop.

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