Diaphragm Dosing Pumps
Device Description: Membrane Dosing Pump
Membrane dosing pumps are innovative devices that have found widespread applications across various industrial sectors. These devices combine the functions of a pump and a dosing system, ensuring precise and reliable liquid delivery with minimal deviations from specified parameters.
The membrane dosing pump consists of several key elements:
- Membrane: One of the primary components is a flexible membrane that moves inside the pump housing through the action of mechanical elements. This membrane divides the working chamber into two parts – compression and expansion;
- Drive Mechanism: A mechanical drive is used to move the membrane, which can be electric, pneumatic, or hydraulic;
- Valves: Dosing pumps feature valves that regulate the flow of liquid, ensuring accurate dosing.
Operating Principle
The operation of the membrane dosing pump is based on the cyclic compression and expansion of the membrane. During compression, liquid is drawn into the working chamber through the intake valve. Then, during membrane expansion, the liquid is expelled through the discharge valve in the desired quantity.
This process ensures precise and reliable dosing even for liquids with high viscosity or aggressive chemical properties.
Areas of Application and Advantages

Membrane Dosing Pump
Membrane dosing pumps have found wide applications across various industries:
- Chemical Industry: For precise dosing of reagents in chemical production processes.
- Water Treatment: In water purification systems for dosing chemical reagents.
- Oil and Gas Industry: For delivering reagents in oil and gas processing.
- Medicine: In automated systems for dispensing medicinal substances.
- Food Industry: For dosing ingredients in food production processes.
Advantages of Membrane Dosing Pump:
- Precise Dosing: Ensures high accuracy in liquid delivery, critical in many manufacturing processes.
- Resistance to Aggressive Environments: Manufactured from chemically resistant materials, making these pumps suitable for handling aggressive chemical substances.
- Easy Maintenance: Convenient access to the membrane and valves ensures ease of maintenance and replacement of parts.
- Durability: The design of the membrane dosing pump ensures a long service life with minimal wear.
If you need membrane dosing pumps, contact “LET” company. We offer a wide selection of high-quality pumping equipment.
Call us at ☎ +7 (495) 232-00-66.
Specifications of membrane metering pumps, KD series
- Capacity: 15-180 liters per hour (50 Hz);
- Pressure: 5-8 bar; Motor: 180 V, 50 Hz (standard);
- Materials: PVC;
- PVDF; AISI 304, 316; PTFE.
Model range of KD series membrane metering pumps
| Model | Q,
l/hour |
P, bar | Frequency, strokes per minute | D diaph.,
mm |
Power, W
|
Connection | ||
| PVC | Teflon | 304/316 | ||||||
| KD15/0.8 | 15 | 8 | 48 | 60 | 180 | 6*9 PE tube | RC1/2″F thread | 10*16 мм for welding |
| KD20/0.8 | 20 | 8 | ||||||
| KD40/0.8 | 40 | 8 | 96 | |||||
| KD60/0.6 | 60 | 6 | 48 | 95 | DN15 Под adhesive | RC1/2″F thread | ||
| KD80/0.6 | 80 | 6 | 96 | |||||
| KD120/0.5 | 120 | 5 | ||||||
| KD180/0.5 | 180 | 5 | 144 | |||||

