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Air-Operated Diaphragm Pump FDM 40

For flow rates up to 380 l/min

The FDM 40 air-operated diaphragm pump reliably transfers low- to high-viscosity liquids at flow rates of up to 380 l/min.

Its molded design is self-priming, dry-run safe, and suitable for handling abrasive media, solids-containing liquids, and fluids with a high gas content.

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Features

  • Spray-Coated Version
  • Self-priming when dry
  • Protected against dry running
  • Flow rate adjustable via air pressure
  • No bypass required
  • Floodable pump design
  • Forced reversal for safe restart
  • Oil-free operation
  • Control valve is not affected by contaminants in the air
  • For solid particle sizes up to 6.4 mm
  • Available in plastic and metal versions
  • Also available in an explosion-proof version

Advantages

  • Reliably pumps abrasive, corrosive, and viscous fluids
  • Enables high flow rates of up to 380 l/min
  • Infinitely adjusts the flow rate via air pressure
  • Starts reliably from any shutdown position
  • Operates without clogging, even without an additional bypass
  • Reduces maintenance requirements thanks to oil-free operation
  • Supports service-friendly operational procedures
  • Offers material options for different media
  • Suitable for flammable media in the appropriate explosion-proof design

Media Examples

  • Alcohols in the Pharmaceutical Industry
  • Gasoline
  • Chlorine bleach
  • Cleaning agents
  • Pickling solutions
  • Wastewater
  • Abrasive media
  • Corrosive media
  • Highly flammable media
  • Viscous media

Technical Specifications

Feature Specification
Flow Rate max. 380 l/min¹
Delivery pressure Max. 8 bar
Operating pressure max. 8 bar
Dry suction head max. 6.0 m¹
Suction head with liquid max. 7.6 m¹
Solid particle size max. 6.4 mm
Viscosity min. 1 mPas to max. 15,000 mPas²
Housing materials Aluminum, gray cast iron, polypropylene, polyvinylidene fluoride, stainless steel
Media / Fluids Abrasive media, corrosive media, highly flammable media, viscous media
Connection: Pressure port G 1 1/2 or 1 1/2" flange
Suction connection G 1 1/2 or 1 1/2" flange
Applications Ex

1 Depends on pump model, operating pressure, and fluid2
Depends on the fluid’s flow characteristics

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