Sodium Hydroxide (Caustic Soda)   Sodium Hydroxide Tank .com
by Bailiff Enterprises
Sodium Hydroxide Bonding

Vents for Sodium Hydroxide Tanks

Tank vents for a Sodium Hydroxide (Caustic Soda) tank should allow the tank to remain at atmospheric pressure internally.  Allowing a vaccuum or a pressurized situation to occur can cause deformation or damage to the tank. 
For Sodium Hydroxide tanks that are filled or discharged through the use of pumps, the tank vent should be at least one inch larger than the largest intake or discharge pipe size.  For tanks that are filled from a tanker truck through the use of pneumatic pressure, the vent should be sized larger to account for the extra air pushed in with the chemical.  Dow Chemical recommends that vents on Caustic Soda tanks be extended to within 3 feet of the ground.
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