The equipment can be used to store alkali liquor (NaOH) with concentration ranging within 20～40%. The unused pipe orifice should be sealed. Category of level meter should be marked during selection period as storage medium is different. There is glass pipe level meter (for NaOH) which can strengthen polypropylene, and also other kind of level meter can be used according to engineering requirement. The equipment couldn’t be used in vacuum. 
Specification and technical parameters of the equipment 

Dimension of alkali storage tank and pipe orifice drawing

Nominal diameter of pipe orifice of alkali storage tank （mm）