Storage in Piping Calculator

    Compute the internal volume — and effective compressed air storage — of a pipe run.

    Inputs

    Results

    Internal Pipe Volume
    16.32gallons
    Internal Pipe Volume
    2.182cu ft
    Stored Free Air at line pressure
    17.02SCF

    Estimates only. For production sizing decisions, contact our engineering team.

    About this calculator

    Distribution piping itself acts as supplemental compressed air storage. In larger plants with hundreds of feet of header pipe, this can be substantial and is often overlooked when sizing receiver tanks.

    Effective storage scales with line pressure: at 100 PSIG, every cubic foot of pipe internal volume holds roughly 7.8 SCF of free air (relative to atmospheric).

    Formula

    Internal Volume (gal) = π × (ID/2)² × Length × 12 / 231. Stored Free Air (SCF) = Volume_cuft × ((P + 14.7) / 14.7).

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