If you need a pneumatic (air-operated) drum pump for flammable liquids (e.g., solvents, gasoline, diesel, alcohol, or other volatile chemicals), safety and material compatibility are critical. Here’s a detailed guide to help you choose the right one:
Explosion-Proof & Non-Sparking
Must be ATEX-certified (EU) or OSHA-compliant (US) for flammable environments.
Air motors should be non-sparking (aluminum, brass, or plastic construction).
Chemical-Resistant Materials
Polypropylene (PP) – Good for most fuels and solvents.
Conductive PP – Prevents static buildup (critical for flammables).
PVDF (Kynar®) – For aggressive chemicals (e.g., acetone, toluene).
Pump Body:
Seals: Viton® (FKM) or PTFE for fuel and solvent resistance.
Flow Rate & Pressure
Typically 1–20 GPM, depending on air supply (PSI).
Requires clean, dry air supply (~30–100 PSI).
Grounding & Safety
Must have static-dissipative tubing or grounding wire to prevent sparks.
No metal parts in contact with liquid (unless specially coated).
Best for: Gasoline, diesel, ethanol, kerosene.
Features:
Conductive polypropylene (anti-static).
ATEX Zone 1/21 certified (safe for explosive atmospheres).
Flow rate: ~5–15 GPM.
Best for: Acetone, methanol, xylene, other solvents.
Features:
Grounding wire included.
Choice of PP or PVDF for chemical compatibility.
No electricity needed (100% pneumatic).
Price: ~$300–$600.
Best for: Less aggressive flammables (e.g., mineral spirits).
Features:
Aluminum air motor (non-sparking).
PP or stainless steel tube options.
Budget-friendly: ~$200–$400.
Best for: Benzene, ethyl ether, other volatile organics.
Features:
PTFE-lined internals, Viton seals.
Explosion-proof air motor.
✔ Always ground the pump and drum (use a static-safe hose).
✔ Use in well-ventilated areas (avoid vapor buildup).
✔ Check chemical compatibility (e.g., PVDF for ketones, PP for hydrocarbons).
✔ Never use near open flames or sparks.