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Liquids

# kv value calculation (liquids)

 Volume flow Q m3/h Medium (density) p Acetone (0,791)Alcohol (0,790)Ammonia (0,770)Ammonia water (0,958)Antracene oil (1,050)Ethanol, water free (0,800)Ether (0,720)Ethyl chloride (0,920)Ethylene glycol (1,114)Petrol (0,715)Petrol, pure (0,880)Diesel (0,860)Acetic acid (1,080)Ethanol, water free (0,800)Anti-freeze (1,060)Glycerin, water free (1,260)Heating oil (0,920)Potassium hydroxide, 10% (1,090)Potassium hydroxide, 50% (1,510)Saline (1,150)Machine oil (0,910)Methanol (0,800)Methylchloride (0,930)Methylenchloride (1,330)Milk (1,030)Sodium hydroxide, 10% (1,110)Sodium hydroxide, 50% (1,520)Petroleum ether (0,660)Petroleum (0,810)Nitric acid (1,560)Sulfuric acid (1,840)Silicone oil (0,870)Spirit, 95%ig (0,816)Turpentine oil (0,870)Toluole (0,880)Transformer oil (0,870)Trichloroethylene (1,470)Water (1,000)Hydrogen peroxide (1,463)Xylole (0,880) kg/dm3 Inlet pressure (absolute) p1 bar Outlet pressure (absolute) p2 bar Differential pressure Δ p 0,00 bar Calculation of kv value Required kv value of valve 0,00 m3/h

The calculation formulas are purely practical formulas and must only be used with the specified units. Please pay close attention to the units specified by us.

 Δ p = p1 - p2

Overpressure:
 pü = p - pl
p = absolute pressure of the medium
pü = Overpressure
pl =Atmospheric pressure outside the valve

If the exact value of the atmospheric pressure (pl) is unknown,
use ~ 1000 hPa (1 bar) as a default value.

p1  >  Δ p  >  p2

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