Waste water pump

Dear friends,

We want to procure 2 pumps for waste water service.

Pump 1: It will handle mixture of 5% sulfuric acid solution and 10% sodium hydroxide solution of varying concentrations

Pump 2: It will handle 20% sodium hydroxide solution

Please suggest me which material will be suitable for the mentioned services.

Thanks in advance.

Pump-1: PTFE pumps with double mechanical seal will do for the mentioned application. Pump type shall be horizontal centrifugal type only & design your waste water sump accordingly.

Pump-2: Carbon steel, SS316 or Alloy 20 (for longer service life) shall be suitable for NaOH application.

After a huge searching I'm succeeded to download the related document:

Pamphlet 94: Sodium Hydroxide Solution and Potassium Hydroxide Solution (Caustic): Storage Equipment and Piping Systems

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