Double diaphragm pump DF 50 made of plastic

Delivery time: ca. 2 - 3 weeks

Air operated double diaphragm pumps for metering, spraying, transferring and distributing a wide range of liquids with low liquids with low to medium flow rates.

The pumps wetted parts are designed for even the most aggressive liquids and for use in corrosive environments. The air motor (pneumatic directional valve and air chamber covers) is made of polypropylene.

For use in potentially explosive atmospheres, the following are required fully groundable pumps with ATEX certification available (Ex II2 GD IIB/IIC 95 degree).

Gear ratio: 1:1
Max. free flow rate*: 50 l/min. (14 US gal/min.)
Delivery rate per stroke (approx.) *: 0.1 liter (0.026 US gal)
Flow rate per cycle (2 strokes)*: 0.2 liters (0.05 US gal)
Air pressure operating range: 1.5 to 8 bar (22 to 115 psi)
Max. Size of solids in suspension: 3 mm (1/8 in.)
Max. Dry suction lift*: 20 ft (6 m)
Max. Wet suction lift*: 26 ft (8 m)
Weight: 4.85 lb (2.2 kg)
Suction side connection: 1/2 inch BSP (F)
Pressure side connection: 1/2 inch BSP (F)
Air connection: 3/8 inch NPSM (F)
Wetted materials
See table

all prices plus VAT plus shipping costs

Air motor

Housing (wetted)

Push rod

Ball seat

Ball

Diaphragm

Weight

Item no

Add to cart

Price

Quantity

Electrically conductive PVDF

HASTELLOY

PVDF

PTFE

ATEX

3,800

DF50PKYTWTTBAS

1377,00 €

all prices plus VAT plus shipping costs

Chemical Pumps - Reliable Conveying Solutions for the Chemical and Process Industry

At Kwerk, we offer a variety of chemical pumps in different designs and configurations. Our metering pumps, also known as displacement pumps, enable precise dosing of accurately defined volumetric flows regardless of pressure conditions. They are widely used in dosing technology, especially for the addition of additives.

Our plastic centrifugal pumps, also referred to as centrifugal pumps, utilize centrifugal forces to convey liquid media. The rotational speed of the impeller creates centrifugal forces that propel the medium with pressure out of the pump. These pumps are particularly suitable for water treatment applications.

The air-operated diaphragm pump conveys media by applying air pressure to a diaphragm, separating the medium from the diaphragm. This provides the advantage of protecting the pump from sludges or contaminants. This pump is ideal for demanding environments.

Our drum pumps enable easy emptying of liquids from containers such as drums and tanks. They offer a practical alternative for handling and emptying containers in industrial environments.

Eccentric pumps are self-priming displacement pumps that are capable of running dry and are free from cavitation. They are particularly well-suited for frequency control and mobile applications. These pumps are characterized by their robust and reliable construction, ensuring operational safety and low maintenance.

Our water jet pumps utilize water as the driving medium to create a vacuum or extract liquids and gases. They find application in laboratory technology for suctioning gases such as oxygen or air and mixing them with water. The submersible pump operates in a vertical configuration similar to a conventional centrifugal pump.

Rely on Kwerk as your partner for reliable chemical pumps. Contact us for further information and consultation.