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40 Hr. Certification for Backflow Tester
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"You're Going To Have the Water Off How Long???"
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Water Hydraulic Facts
A gallon of water weighs 8.34 lbs.
There are 7.48 gallons in a cubic foot.
1 cubic foot of water weighs 62.4 pounds.
Water can only be siphoned a maximum height of 33.9 feet at sea level.
A column of water one foot high exerts .433 psi at its base.
A column of water 27.75 inches or 2.31 feet in height exerts 1 psi at its base.
Atmopheric pressure at sea level is 14.7 psi.
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