and high-tech

Distributor (authorized representative) to supply (deliver) membrane pumps to industrial enterprises of Russia

ENCE GmbH has been successfully working with different Russian industrial enterprises at the local market for many years having effected over 100 major deliveries of pump equipment to Russian plants.

Today our company is in search of pump equipment producers who consider Russian market attractive and want to boost their sales in the region, as well as expand their field of activities.

We are interested in cooperation with the manufacturers of membrane pumps, who are looking for official distributors (representatives) to supply their equipment to the industrial plants in Russia.

Advantages and principles of cooperation with ENCE GmbH:

The company’s employees are a solid team of higher-education professionals available for technical, commercial and legal support of cooperation with the industrial plants of Russia taking into account specifics and mentality of this country.

The company’s managers have a long-term successful track record of operation in the Russian market and extensive customer base, keep in touch with all the customers, frequently visit customer plants for early detection and replacement of obsolete equipment.

Commercial and engineering departments of the company are well-versed in the equipment of Russian industrial plants and know their up-to-date revamping and modernization needs.

Logistics department of ENCE GmbH is capable to deliver equipment on DAP or DDP terms at the discretion of its Russian customers.

Our service engineers are available for supervision and commissioning of pump equipment as well as warranty maintenance in strict compliance with the manufacturer’s recommendations.

ENCE GmbH arranges presentations regarding the latest achievements of its foreign partners - equipment manufacturers - for the staff of Russian plants.

Our company is closely cooperating with many engineering institutes of Russia, which gives us an opportunity to include your membrane pumps into prospective projects in different industrial fields.

As your official distributor of membrane pumps in Russia ENCE GmbH is responsible for the following:

  • drafting of required documents for participation in bidding procedures
  • technical and commercial negotiations with customers to agree on supplies of your equipment
  • entry into contracts for vortex pump deliveries
  • certification of different types of your pumps in accordance with Russian standards
  • expertise for obtaining local TR CU 010 and TR CU 012 certificates, which will enable your pumps to be used at all the industrial plants of the Customs Union countries (Russia, Kazakhstan, Belarus, Kyrgyzstan).
  • registration of delivery and subsequent customs clearance of membrane pumps, registration of transaction certificates for currency control purposes in Russian banks for payments in foreign currency in accordance with legislation of Russia and Customs Union countries.

Diaphragm pump design and operation principle (video)

General description

A membrane pump is a pump of a volumetric type, with a diaphragm (or a membrane) used as a main operating element. The membrane may be driven pneumatically, mechanically or hydraulically; it serves also as a displacer.

Air is fed to the membrane, compressing it and moving the operating liquid towards the outlet. At the same time, the opposite membrane creates vacuum, resulting in liquid suction. Then, these operations are carried out in opposite direction.

Membrane pumps are capable to implement self-suction; therefore, they are commonly installed on the reservoir to be evacuated (or over it). These units can work with substances containing solid particles or highly viscous substances.

These pumping plants can work dry, not resulting in any damage for the main operating element; also, these pumping plants are easy for maintenance. Membrane pumps proven their excellent efficiency for pumping the media for which other centrifugal pumps are inapplicable (when the medium damage risk exists).

Design details and operation principle

The membrane pumps are easy in terms of their design and commissioning procedures. Membranes move horizontally on the shaft; they are driven by the compressed air flowing to the air valve. Membranes also serve as seals between the unit’s liquid chambers and air chambers. The operating liquid enters the pumping plant through the suction pipe, driven by the vacuum generated in liquid chambers due to the membranes firmly pressed against the casing. Then, the set of ball valves is used by membranes to move the pumped liquid towards the discharge pipe. The set of ball valves in the pumping plant is capable to pass the substances with inclusions (the size of inclusions is ≤30 mm).

Membrane pumps with metering devices also exist. In these units, forced membrane movements are used to implement the pumping process; the membrane serves also as the chamber wall. Pneumatic, electromagnetic or electromechanical drives can be used to implement the membrane swinging movements in these pumps.

The most common metering pumps are solenoid pumps. In these pumps, the membrane is moved by the rod driven by the electromagnetic field created by the solenoid.

The metering process is implemented by the rod movement frequency and amplitude variation. In this design, one operating cycle includes the discharge and suction processes; their length is equal. The drive power in these pumps is not very high; therefore, they are used when there is no need for high capacity (the ultimate value is 60 litres/hour) or high head (the ultimate value is 30 bar).

Usually, the metering device in these units is made of plastic, the valves are made of ceramics or special steel, the metering head casing is made of PMMA or polypropylene, and the membrane is made of fluoroplastic. Membranes made of composites are also used; they are even more reliable and durable. The materials for key components are selected in accordance with media to be processed by the pump.

Solenoid membrane pumps can be controlled remotely. A pulse signal or a current signal (from 0.4 to 20 mA) can be used as a control signal.

Operation principle (3D model)


Membrane pumps are simple in terms of their design: there are no rotary parts, no gearbox, no motor and no gland seals. The design free of end seals is especially important for food industry, because it is very important to prevent contamination of products by lubricants in this industry. Due to these parameters, the pumping plant is more wear-resistant and leak-safe. Also, diaphragm pumping plants have small size and weight, and they are applicable for wide range of media (water, viscous substances or substances containing the pieces as large as 10 mm). The units require minimum service (no lubrication is required for mechanisms), easy for maintenance, cost-effective, have low costs (membrane pumps are 30-40% cheaper than cam-driven or screw pumps) and environmentally-safe.

Scope of application

Due to their advantages, membrane pumps are widely used in several industries involving aggressive or highly-viscous media (such as chemical industry, printing, paper industry, paint and varnish industry). Also, these pumps are actively used in water treatment systems (for metering and pumping the reagents), water supply systems, agriculture, beverage industry.

We are convinced that our company ENCE GmbH will become your reliable and efficient distributor (authorized representative) of your membrane pumps in the Russian market.