Turn Off Pressure Calculator

Turn Off Pressure Calculator calculator can be used to determine the pressure required to safely close a valve in a pipeline system during shutdown operations.

Input Parameters

Calculation Results

Calculation Formula

Turn Off Pressure (PSI) = 0.5 × ρ × (L/V)²

Where:
ρ = Fluid Density (lb/ft³)
L = Pipeline Length (ft)
V = Valve Closure Velocity (ft/s) = L / Valve Closure Time (s)

Turn Off Pressure

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PSI (pounds per square inch)

Turn Off Pressure Calculator Calculator Usage Guide

Learn how to use the Turn Off Pressure Calculator calculator and its working principles

How to Use the Calculator

  1. Enter the pipeline diameter in inches.
  2. Enter the fluid density in pounds per cubic foot (lb/ft³).
  3. Enter the pipeline length in feet.
  4. Enter the valve closure time in seconds.
  5. Click the "Calculate" button to compute the turn off pressure.
  6. The result will be displayed in pounds per square inch (PSI).

Working Principle

The Turn Off Pressure Calculator determines the pressure required to safely close a valve in a pipeline system during shutdown operations. This is calculated based on the fluid density, pipeline length, and valve closure time.

The formula used is:

Turn Off Pressure (PSI) = 0.5 × ρ × (L/V)²

Where:

  • ρ = Fluid Density (lb/ft³)
  • L = Pipeline Length (ft)
  • V = Valve Closure Velocity (ft/s) = L / Valve Closure Time (s)

Applications

This calculator is useful for pipeline engineers and operators who need to determine the pressure requirements for valve shutdown operations to prevent pipe bursting or other damage.