Diaphragm pump

1. Product Overview

A diaphragm pump is a positive displacement pump that uses the reciprocating motion of two diaphragms (usually made of rubber or Teflon) to draw in and discharge liquid. Unlike electrically driven pumps, air-operated diaphragm pumps (AODD) run entirely on compressed air, eliminating explosion risks and handling high-viscosity or solid-laden fluids effectively.

2. Standard Technical Specifications

3. Why Choose Diaphragm Pumps for Harsh Environments?

Diaphragm pumps offer unique advantages over gear or centrifugal pumps:

• Explosion-proof safety: Operated by compressed air, no electric motor sparks, making them extremely safe for fuel depots and solvent handling.
• Dry-run capability: Can run without liquid supply without damaging seals or components.
• Automatic flow regulation: Pump stops automatically when discharge pressure equals air supply pressure, without needing safety valves or sensors.
• Handles dirty fluids: Internal design allows suspended solids to pass through without clogging or damaging gears.

4. Key Features

• Sealless design: Fully enclosed, eliminating any risk of liquid leakage to the environment.
• Versatile operation: Suitable for water, fuel, oil, corrosive chemicals, or viscous food products (e.g., sauces, pastes).
• Modular air valve design: Non-stalling mechanism ensures continuous operation without freezing or interruptions.
• Easy maintenance: Simple construction allows diaphragm replacement on-site without specialized tools.

5. Practical Applications

• Fuel & chemical industry: Transferring solvents, acids, and bases from drums to tanks or from storage to tank trucks.
• Wastewater treatment: Pumping sludge, wastewater with solids, or chemical dosing.
• Paints & inks: Handling viscous, flammable materials like paints and printing inks.
• Food & pharmaceuticals: Pumping liquid or semi-liquid ingredients in hygienic environments (using stainless steel 316 body).