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Unit of length

1 in = 25.4 mm

1 ft = 0.3048 m

1 micron = 0.001 mm

Area units

1 in2 = 6.45 cm2

1 ft2 = 0.093 m2

Volume units

1 litre = 0.001 m3

1 cu.ft. = 0.0283 m3

1 cu.in. = 16.39 cm3

1 fluid oz. (Imp) = 28.41 mL

1 fluid oz. (Us) = 29.57 mL

1 gal (imp) = 4.546 L

1 gal (us) = 3.79 L

Temperature Unit

(° F-32) X5 / 9 = ℃

K-273.15 = ℃

Power and energy units

1 Nm = 1 J

1 kgm = 9.807 J

1 kW / hr = 3.6 MJ

1 lbft = 1.356 J

Power units

1 Nm / sec = 1 W

1 lbft / sec = 1.356 W

1 kgm / sec = 9.807 W

1 Joule / sec = 1 W

1 H.P. (imp) = 745.7 W

Mass units

1 lb = 453.6 g

1 tonne = 1000 kg

1 ton (imp) = 1016 kg

1 ton (us) = 907.2 kg

Flow is calculated

Q = Cv value X 984 =

Kv values X 1100 Cv = So ÷ 18

Power units

1 kgf = 9.81 N

1 lbf = 4.45 N

1 kp (kilopound) = 9.81 N

1 poundal = 138.3 mN

1 ton force = 9.964 kM

Torque Units

1 kgm = 9.807 Nm

1 ft. Poundal = 0.0421 Nm

1 in lb = 0.113 Nm

1 ft lb = 1.356 Nm

Pressure units

1 psi = 6.89 kPa

1 kgf / cm2 = 98.07 kPa

1 bar = 100 kPa

1 bar = 14.5 psi

1 mm mercury = 133.3 Pa

1 in mercury = 3.39 kPa

1 Torr = 133.3 Pa

1 ft water = 0.0298 bar

1 bar = 3.33 ft water

1 atmosphere = 101.3 kPa

1 cm water = 97.89 Pa

1 in water = 248.64 Pa

Conversion Table

1psi = 6.895kPa = 0.07kg / cm2 = 0.06895bar = 0.0703atm 1standard atmosphere = 14.7psi = 101.3kPa = 1.01325bar

1kgf / cm2 = 98.07kPa = 14.22psi = 28.96ins mercury

1m3 = 1000000cm3

1cu ft / min = 28.3 l / min

1Pa = 1N / m2

1ft lb = 0.13826kgm = 1.356 Nm

1 L = 1000cm3 = 1.7598pint = 1000000mm3

1 tonne = 1000 kg = 0.984 ton = 2204.6 lb

Flow

Cv value = water flow (US gal / min) at 60 ° F, flowing through the differential pressure valve for flow value of 1 psi and the results of it.

Kv value = water flow (L / min) at 20 ℃ under flowing through differential pressure flow setpoint 1 kgf / cm2 and the results of the valve.

So = effective cross-sectional area (mm2)

Q = flow rate (Ng / min)

STP = standard temperature and pressure (0 ℃ 101.3kPa and absolute pressure)

NTP = normal temperature and pressure (20 ℃ 101.3kPa and absolute pressure)

MSC = metric standard conditions (15 ℃ and 101.3kPa absolute pressure)

AMR = temperature: 20 ℃ and relative humidity: 65%