Function SeriesDirectflo® DF250
Directflo® DF250 dubbele membraanpomp – Air operated double diaphragm pumps for dosing and transferring a wide variety of fluids.
Very reliable diaphragm aluminium pumps for large volume transfer (250 l/min max.), dispensing and evacuating a variety of fluids.
These pumps have an aluminium air motor. Typical applications for these pumps are transferring and dispensing of antifreeze solutions, lubricants and diesel, and waste oil evacuation.
They can be used as stand-alone pumps for transfer applications or as systems pumps in distribution systems that include hose reels.
Models & Part numbers
Part No.: 554010
Application: Antifreeze solutions
Pump Body: Aluminium
Diaphragms: Hytrel®
Balls: Hytrel®
Seats: Stainless steel
Other wetted material: Viton®
Part No.: 554030
Application: Antifreeze solutions, lubricants, diesel, waste oil evacuation and transfer
Pump Body: Aluminium
Diaphragms: Buna-N
Balls: Buna-N
Seats: Stainless steel
Other wetted material: –
Fluids Handled
- Antifreeze and antifreeze solutions
- Lubricants
- Waste oil
- Diesel
Markets Served
- Service shops
- Car and truck dealers
- In plant
- Agriculture
- Lube trucks
- Mining and construction
- Railroad and mass transit
Technical Data
- Pressure Ratio: 1:1
- Maximum free delivery: 250 l/min
- Delivery per Stroke approx: 0,6 litres
- Delivery per cycle approx: 1,2 litres
- Air pressure operating range: 1,5 to 8 bar
- Solids in suspension maximun size: 6 mm
- Maximum dry suction head (1) : 5 m
- Maximum wet suction head (1) : 8 m
- Weight: 20 kg
- Fluid inlet: 1 1/2″ BSP (F) and DIN PN-10 flange
- Fluid outlet: 1 1/2″ BSP (F) and DIN PN-10 flange
- Air inlet: 1/2″ NPSM (F)
(1) Data measured with water, air inlet pressure 7 bar (100 psi), 20ºC (68ºF)