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 insensitive to contaminants in the air
- For solid particle sizes up to 3.2 mm
- Available in plastic and metal versions
- Also available in an Ex-rated version
Advantages
- Reliably pumps abrasive, corrosive, and viscous fluids
- Enables high flow rates of up to 178 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 FDM 25 plastic + metal
| Feature | Specification | performance diagram |
|---|---|---|
| Delivery rate max. | max. 178 l/min¹ (Metal version: 133 l/min¹) |
Plastic version: Metal version:
|
| 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 | |
| Particle size | max. 3.2 mm | |
| Viscosity | min. 1 mPas to max. 15,000 mPas² | |
| Housing materials | Aluminum, polypropylene, polyvinylidene fluoride, stainless steel | |
| Media / Fluids | Abrasive media, corrosive media, highly flammable media, viscous media | |
| Connection: Pressure port | G 1 or 1" flange | |
| Suction connection | G 1 or 1" flange | |
| Application range | Ex |
1 depending on pump model, operating pressure, and fluid
2 depending on the fluid’s flow characteristics
Dimensions [mm] FDM 25 plastic version
Dimensions [mm] FDM 25 metal version
FDM 25 plastic version
| Typ | Werkstoff Gehäuse | Diaphragm | Ball | Hub | Seal | Weight | Part no. | |
|---|---|---|---|---|---|---|---|---|
 |
FDM 25 PP/AA | Polypropylene | Santoprene | Santoprene | PP | EPDM | 9,2 kg | 10-M25 40 010 |
| FDM 25 PP/TT | Polypropylene | PTFE | PTFE | PP | PTFE | 9,2 kg | 10-M25 40 100 | |
| FDM 25 PVDF/TT | Polyvinylidene fluoride | PTFE | PTFE | PVDF | PTFE | 13,0 kg | 10-M25 60 000 |
FDM 25 metal version
For use in potentially explosive atmospheres in accordance with the ATEX Directive 2014/34/EU.
| Typ | Ex | Pump housing | Diaphragm | Ball | Hub | Seal | Weight | Part no. | |
|---|---|---|---|---|---|---|---|---|---|
 |
FDM 25 AL/NN |  |
Aluminium | NBR | NBR | AL | NBR | 8,6 kg | 10-M25 10 000 |
| FDM 25 AL/TT | |
Aluminium | PTFE | PTFE | AL | PTFE | 8,6 kg | 10-M25 10 100 | |
| FDM 25 S/TT | |
Stainless steel | PTFE | PTFE | Stainless steel | PTFE | 14,0 kg | 10-M25 20 100 |
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