What Is This Tool?
This unit converter enables users to change pressure measurements from ton-force (long)/square inch, a traditional British Imperial unit, to foot water (4°C) [ftAq], a metric relevant unit expressing pressure in terms of hydraulic head from water at 4°C.
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 your input unit.
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Choose 'foot water (4°C) [ftAq]' as the output unit.
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Click convert to see the equivalent pressure value.
Key Features
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Converts legacy Imperial pressure units into water-based hydraulic head units.
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Supports understanding of pressure in terms of fluid columns at standard water temperature.
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Useful for historical engineering, fluid mechanics, and hydraulic system measurements.
Examples
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1 ton-force (long)/square inch equals approximately 5167.07 foot water (4°C) [ftAq].
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0.5 ton-force (long)/square inch converts to about 2583.53 foot water (4°C) [ftAq].
Common Use Cases
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Translating old British engineering pressure specifications for bearing or contact pressures.
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Converting pressures in industrial press ratings from legacy units to hydraulic head measurements.
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Supporting groundwater depth–pressure analysis and hydraulic pump system design.
Tips & Best Practices
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Confirm the water temperature reference when interpreting foot water pressure units.
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Use the tool to convert complex legacy pressure values into practical fluid system units.
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Check your inputs carefully for units and values before converting.
Limitations
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Ton-force (long)/square inch is a legacy and comparatively large pressure unit, possibly leading to large converted values.
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The foot water unit assumes pure water at 4°C and may differ slightly under other conditions.
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Conversions might involve rounding due to unit magnitudes and measurement contexts.
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, used primarily in historical British engineering.
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Why is foot water (4°C) used as a pressure unit?
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Foot water (4°C) indicates pressure based on the hydrostatic pressure exerted by a one-foot column of pure water at 4°C, commonly used for hydraulic head and fluid measurements.
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Can this tool convert between other pressure units?
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This specific tool focuses on converting from ton-force (long)/square inch to foot water (4°C) only.
Key Terminology
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Ton-force (long)/square inch
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A pressure unit expressing force from one long ton applied over a square inch area, used historically in British engineering.
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Foot water (4°C) [ftAq]
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Pressure equivalent to the hydrostatic pressure from a one-foot column of pure water at 4°C, used to measure hydraulic head.
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Hydraulic Head
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A measure of pressure expressed as the height of a water column that would exert that pressure.