What Is This Tool?
This converter lets you transform pressure measurements from ton-force (long)/square inch, a historical British pressure unit, into foot water (60°F) [ftAq], which represents hydrostatic pressure from a column of water. It supports analysis and conversion of legacy pressure data to modern fluid pressure units.
How to Use This Tool?
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Enter the pressure value in ton-force (long)/square inch
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Select 'ton-force (long)/square inch' as the input unit
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Choose 'foot water (60°F) [ftAq]' as the output unit
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Click convert to get the equivalent pressure in foot water (60°F)
Key Features
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Converts legacy imperial pressure units to hydrostatic pressure units
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Supports pressure values used in historical and industrial contexts
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Provides clear conversion factors between ton-force (long)/square inch and foot water (60°F) [ftAq]
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Browser-based and easy to use with instant results
Examples
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Convert 2 ton-force (long)/square inch to foot water (60°F): 2 × 5172.0215613517 = 10344.0431227 ftAq
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Convert 0.5 ton-force (long)/square inch to foot water (60°F): 0.5 × 5172.0215613517 = 2586.0107807 ftAq
Common Use Cases
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Interpreting historical British engineering pressure specs for machinery and ship fittings
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Evaluating industrial press and forging equipment pressures in legacy documents
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Updating old imperial pressure values to SI or hydrostatic units for modern analysis
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Measuring low-pressure differentials and draft in HVAC systems
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Assessing small gas or fluid pressures in regulators and leak testing
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Expressing hydraulic heads or pressure drops in pumps, filters, and lab manometers
Tips & Best Practices
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Always verify the original pressure unit before conversion to avoid errors
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Use this tool to compare legacy pressures with modern hydrostatic measurements
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Consider the temperature condition (60°F) when using foot water units for accurate context
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Apply conversions carefully in engineering updates to honor the legacy unit's approximate nature
Limitations
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Ton-force (long)/square inch is a legacy Imperial unit not commonly used in modern standards
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Foot water (60°F) units depend on water density, which varies slightly with temperature
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Conversions are approximate due to legacy definitions and temperature effects
Frequently Asked Questions
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What does ton-force (long)/square inch measure?
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It measures pressure as the force of one long ton applied over one square inch of area, a unit derived from old British engineering standards.
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When should I use foot water (60°F) units?
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Use foot water (60°F) units for measuring low-pressure hydrostatic head or differential pressures, especially in HVAC, fluid systems, and laboratory settings.
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Is this conversion exact for all applications?
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No, the conversion is approximate due to the legacy status of ton-force (long)/square inch and the temperature-sensitive nature of water density for foot water measurements.
Key Terminology
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Ton-force (long)/square inch
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A pressure unit from historical British engineering equal to the force of one long ton over one square inch.
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Foot water (60°F) [ftAq]
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A pressure unit representing hydrostatic pressure from a 1-foot column of pure water at 60°F under standard gravity.
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Legacy Unit
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An older measurement unit no longer commonly used in modern engineering or standards.