Tanks membrane for heating. Expansion Tanks

The main purpose

A membrane tank for a heating system is a rather important (and extremely necessary) element of virtually any closed-type heating system. Its main role is to compensate for excessive pressure in time, which in practice excludes problems such as "water hammer", "airing" of pipes and others, usually following them, "expensive" breakdowns of heating equipment. It turns out that the decision: to buy a membrane heating tank will always be cost-effective, wise and reasonable.

Internal scheme and features of work

According to the internal scheme, membrane expansion tanks for heating systems are tanks, which consist of 2 main parts (separate for liquid and separate for air), separated by a very flexible membrane (hence the name membrane). The first part, which is intended for the accumulation of fluid, is connected to the heating system through a nozzle. All the excess water formed after the effect of thermal expansion get into it. The second, so-called - air part of the tank is always filled with air.

With a significant increase in pressure in the “part for liquid” of the device, the water begins to “push out” the air, with the result that the membrane as if stretches, and all the “extra” air is released through a special valve. So, it turns out that the membrane tank for heating is equipped with a “part for liquid”, which in size will always be larger than the air part. As soon as the liquid cools, the pressure immediately returns to normal, and the water returns to the piping system. Accordingly, the membrane - again returns to the "starting" position. Next come the new cycles.

Installation / Installation

The membrane tank of the heating system (which you can buy right now in the virtual showcase of our store “Always Warm”) can be installed on the floor (standard equipment of this kind will include very stable legs) or directly on the wall (for this installation option - reliable special mounts).

Required condition: membrane heating tanks must be integrated into the heating system immediately behind the pumping equipment (as in the figure below), which eliminates the likelihood of large and harmful pressure drops of the coolant.

Main advantages:

• the liquid (or other coolant) never evaporates, which often happens in ordinary tanks (the so-called - open type);
• eliminates the risk of "airing" pipes / batteries, as in this case the air is in contact with the liquid coolant;
• maximum silent operation of both the pipeline system and pumping equipment;
• if you decide to buy a membrane expansion tank for heating, you can install it almost anywhere, and not just in the attic or directly on the roof, such as similar models of open type;
• the maximum temperature threshold is +100 ° C (due to the thermally / resistant material of which the membrane is made).

Membrane expansion tanks have been used in heating, water supply, air conditioning, refrigeration systems to compensate for changes in the volume of coolant resulting from its heating or cooling, as well as to prevent the system from being destroyed by water hammer. Frequent hydraulic pressure surges that gradually fail systems, cause the need to buy a membrane expansion tank.

Membrane Expansion Tank

The company “Terem” offers a wide model range of expansion tanks of membrane type for heating and water supply (hydroaccumulators) produced by UNIGB, CIMM, Reflex.

The line of vertical membrane tanks Reflex (Germany) is represented by floor and wall models with volumes from 2 to 1000 liters, with two types of membranes - replaceable and non-replaceable. Reflex membrane expansion tanks are designed for closed heating systems, cooling systems and systems with a solar collector. Reflex tanks are robust and do not need extra energy when working. They have a high-quality coating and, depending on the model, are offered in red and blue colors. Products of the Italian brand CIMM are also represented by models with floor and wall mounting options from 6 to 1000 liters.

Membrane expansion tanks  and hydroaccumulators Varem of Russian production are produced in volumes from 5 to 2000 liters. Varem membrane tanks can be used both in everyday life and in the industrial field.

Wall-mounted versions with the possibility of horizontal and vertical installation allow you to buy a membrane water tank, even for very limited spaces. Small-sized models of expansion tanks of membrane type allow to save useful area. For a membrane tank, the price and other characteristics of the models are presented in the product description.

Buy an expansion tank in "Terem

The online store of engineering equipment Teremonline offers to purchase expansion tanks of membrane type for various purposes in floor and wall versions. Broad tanks and hydroaccumulators CIMM, Reflex, Varem are intended mainly for use in the household purposes. Models are presented by a wide choice of standard sizes. On the expansion tank membrane price in the online store Teremonline from 748 rubles.

A membrane expansion tank is one of the most important components of a heating system. It is needed in order to prevent the increase in pressure during heating. But before you buy a membrane tank for heating, it is important to understand the criteria for choosing it.

Why buy

The devices regulate the pressure in case of its drops, which helps prevent various emergency situations.

• does not pollute the water;
• installed in any room;
• easy to install;
• suitable for different types of water;
• prevents heat loss.

Used for closed type heating system. The main purpose of ensuring the stability of the boilers.

Design features

The expansion tank is divided by a membrane into two parts. In one there is air or gas compressed to the desired level, and in the second there is water. A compressor is used to maintain pressure.

The membrane in the tank is of two types of balloon and diaphragm. From this depends largely on the price of the device, but regardless of which model is chosen, it will be cheap.

The first option is more reliable. This is explained by the fact that water is in the membrane, so there is no contact of the liquid with the walls. It prevents corrosion. Diaphragm membranes are used in models that have a small volume.

It is recommended to buy a membrane expansion tank for heating if you have systems equipped with:

• autonomous heat source;
• solar collectors;
• closed circuits;
• heat pumps.

The device can not be disassembled and opened. It is enough to attach it to the pipeline located closest to the boiler.

Buying a tank can be quite inexpensive, but it is important to remember which parameters to pay attention to in order for the purchase to meet all the requirements. You need to know the characteristics of the membrane:

• operating temperature range;
• the material that was used for the manufacture;
• compliance with hygiene and sanitary requirements;
• lifetime.

Also, calculate the volume correctly. This criterion also affects the cost of the device. For calculation, the total volume is taken into account:

• boiler;
• pipeline;
• heating systems.

The simplest formula to calculate 10% of the total. If the value is less, then there is a risk that cracks will appear on the surface and water leakage will begin, and this significantly reduces the service life.

The membrane tank is selected individually for a specific heating system, so contact the consultants for help, you will avoid mistakes in selection and disappointment during operation.