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Conversion Factors and Technical Data
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INW is pleased to provide these conversion factors and various technical data to help your water monitoring and sampling project so smoothly.
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Conversion Factors         Pipe Data         Tubing Data
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Conversion Factors
TO GO FROM MULTIPLY BY TO GET
Pressure
PSI 6.895

KPa

PSI 0.0680

atm

PSI 0.0689

bar

PSI 2.3067

ft. H2O

PSI 2.036

in. Hg

PSI 0.0703

kg/cm2

PSI 6895

Pa

Temperature

°F 0.556 (°F-32)

°C

°C (1.8 x °C) + 32

°F

°C °C+273.15

°K

Volume
US gal. 128

fl. oz.

US gal. 230.8

cu. in.

US gal. 0.1337

cu. ft.

US gal. 3.785

liters

US gal. 0.8333

Imp. gal.

in3 16.39

ml

Length
inches 2.54

cm

meter 39.37

inches

feet 12

inches

cm 0.3937

inches

meter 3.28

feet

mile 5280

feet

yard 3

feet

Miscellaneous
US gal. at 50°F 8.33

lb.

kilogram 2.2

lb.

GPM 3.785

lpm

GPM 0.134

cfm

grams 0.03527

oz.

watts 0.0738

lb. ft./sec.

hp 0.746

kW

uS/cm 0.65

TDS

uS/cm .63

Salinity

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Pipe Data
Density (lbs./cu.in.) / Approx. Tensile Strength (PSI @ 73°F)
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Steel: 0.2836 / 60,000
Aluminum (6061): 0.098 / 30,000
300 Series Stainless: 0.286 / 75,000
PVC: 0.0498 / 7,940
CPVC: 0.0559 / 8,400
Water: 0.0361 / NA
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Nominal Size (in.)

Avg. O.D. Avg. I.D. Nominal weight per 100 ft (lbs) Max work press (PSI) @ 75°F O.D. Volume of water per 100 ft (gal) I.D.Volume of water per 100 ft (gal)
3/4" Schd 80 PVC 1.050 0.742 27.8 690 4.50 2.25
3/4" Schd 40 SS 1.050 0.824 113.1 3225 4.50 2.77
1" Schd 40 PVC 1.315 1.029 167.9 3079 7.06 4.32
1 1/4" Schd 40 PVC 1.66 1.36 43.4 370 11.25 7.55
1 1/2" Schd 40 PVC 1.90 1.59 51.8 330 14.74 10.32
2" Schd 40 PVC 2.375 2.067 69.5 280 23.01 17.43
2" Schd 80 PVC 2.375 1.939 94.9 400 23.01 15.34
2" Schd 10 SS 2.375 2.157 263.8 1835 23.01 18.98
2" Schd 40 SS 2.375 2.067 365.3 2593 23.01 17.43
4" Schd 40 PVC 4.50 4.026 204.3 220 82.62 66.13
4" Schd 80 PVC 4.50 3.826 283.3 324 82.62 59.72
4" Schd 10 SS 4.50 4.260 561.3 1066 82.62 74.04
4" Schd 40 SS 4.50 4.026 1079.0 2106 82.62 66.13
4 1/2" J-55 PVC 5.00 4.56 212.6 176 102.00 84.84
6" Schd 40 PVC 6.625 6.065 360.9 180 179.07 150.07
8" Schd 40 PVC 8.625 7.961 545.3 160 303.51 258.58
This information is meant to serve as a guideline only. INW is not responsible for its accuracy or use. Materials should be tested under actual conditions to determine suitability.

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Tubing Data
Density (lbs./cu.in.) / Approx. Tensile Strength (PSI @ 73°F)
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Low Density Polyethylene (LDPE): 0.0333 / 2,300
High Density Polyethylene (HDPE): 0.0347 / 4,500
Reinforced Vinyl: 0.0498 / 1,458
Polypropylene: 0.0326 / 5,000
FEP(Teflon®): 0.0758 / 3,000
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Nominal Size (in.)

Avg. O.D. Avg. I.D. Nominal weight per 100 ft (lbs) Max work press (PSI) @ 75°F O.D. Volume of water per 100 ft (gal) I.D.Volume of water per 100 ft (gal) Min bending radius (in)
1/4" LDPE 0.25 0.170 1.1 120 0.255 0.118 1.0
3/8" HDPE 0.375 0.250 2.5 300 0.573 0.255 2.5
1/2" HDPE 0.500 0.375 3.6 225 1.020 0.573 6.0
5/8" HDPE 0.625 0.50 4.6 150 1.594 1.020 10.0
11/16" LDPE 0.6875 0.50 7.28 125 1.928 1.020 5.0
3/4" reinforced vinyl 0.75 0.50 18.0 162 2.295 1.020 4.0
This information is meant to serve as a guideline only. INW is not responsible for its accuracy or use. Materials should be tested under actual conditions to determine suitability.

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Teflon is a registered trademark of the DuPont Company.

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Last modified: 02/14/02