For transferring sodium hydroxide (NaOH, caustic soda) from drums, you need a chemical-resistant drum pump that can handle its highly corrosive nature. Here’s what to look for:
✔ Material Compatibility – NaOH attacks many metals and plastics, so the pump must be made of:
Polypropylene (PP) – Best for lower concentrations (≤50%).
PVDF (Kynar®) – Superior chemical resistance, ideal for high concentrations and elevated temps.
Stainless Steel (316 SS) – Only for dilute NaOH (<20%) at moderate temps (check passivation).
EPDM or Viton® Seals – Resistant to caustic degradation.
❌ Avoid – Aluminum, brass, nylon, and Buna-N seals (they corrode or degrade).
✔ Pump Type
Manual Rotary Drum Pump – Affordable, no power needed.
Electric Drum Pump – Faster, better for frequent transfers (must be explosion-proof if used near fumes).
Air-Operated (Pneumatic) Pump – Safe for hazardous environments.
✔ Smooth Flow & Leak Prevention
Gear or Centrifugal Design – Reduces splashing.
Drip-Free Shutoff – Prevents NaOH spills when not in use.
Manual Options
Lutz Jesco Polypropylene Drum Pump (PP body, EPDM seals)
Kecol Polypropylene Rotary Pump (UK-made, good for 25-50% NaOH)
Electric Options (for frequent use)
GPI PVDF Electric Drum Pump (best for concentrated NaOH)
Finish Thompson E-Series (PP/PTFE) (explosion-proof available)
Pneumatic (Air-Powered) Options
Yamada Corrosive Series (PVDF) – Safe for NaOH fumes.
Wear PPE (gloves, goggles, face shield, chemical apron).
Ventilate the area – NaOH fumes can be harmful.
Rinse immediately if spills occur – Use water or vinegar (for neutralization).
Flush pump after use – Prevents crystallization inside the mechanism.
Would you like help choosing a specific model based on your NaOH concentration and drum size?