Тепло, вода и полимерные трубы

The most important resource on Earth is water. It is necessary for drinking, growing food, producing, treating, and much more. The number of inhabitants of the planet increases with every moment. According to forecasts, by the end of 2017, the number of people living on the third planet of the solar system will reach 7.5 billion people. The annual increment is about 85 million individuals. Accordingly, the amount of water required for consumption increases. Every year it increases by 65 million cubic meters! After a threefold increase in population, the need for fresh water increased 17 times! This has led to the fact that every sixth inhabitant of our planet feels a lack of water for drinking. And according to forecasts, by 2025 it will be every second! I am sure that we are able to change this dynamics. You only need to take care of water and save it. If everyone starts from himself - the future will be pure and harmonious! In this article I want to share with yo...

In the previous article , I introduced you to the elements of which the ball valve folds. Today I'll show you what are the alternative stem seal assemblies. Cross-section of the ball valve The stem design is responsible for the reliability of the pivoting mechanism handles. These blocks can be of two types: maintainable or not. When using the device, there is a possibility of leakage of water from under the handle. This is due to non-compliance Conditions of use or when exceeding the maximum permissible operating parameters (temperature, pressure). A ball valve with a repairable stem assembly allows you to extend the product life cycle. This is achieved by tightening the stuffing box. If a leak occurs in the device with a non-reusable rod assembly, it must be dismantled and replaced with a new one. And this is a waste of time and money. Variants 4-8 are nodes with the possibility of repair. In this article I identified 8 basic options: 1. With two NB...

    В предыдущей статье я рассказал Вам о маркировке фитингов , произведенных из полипропилена. Сегодня я сделаю краткий анализ рынка этого продукта в Украине. Полипропиленовые фитинги Начинать необходимо с анализа материалов из которых изготавливаются фитинги. Для этого наилучшим вариантом будет так называемая «МРНка» - муфта с наружной резьбой. Так как она в себе соединяет два основных материалов – полимер и металл. В качестве пластика в большинстве случаев используют рандом сополимер полипропилена третьего типа PPR type 3. Что касается более дешевой продукции, то там к первичному и вторичному полимеру могут добавлять еще и другие компоненты (например, мел), которые ухудшают свойства пластика. Соответственно более качественные заводы используют только первичное сырье в гранулах. Если изучить вопрос гидравлики, то можно увидеть, что здесь первые позиции занимают бренды Dizayn , Valtec и FADO . Так как у них размер проходного сечения больше чем у других производит...

It is common to discuss the anatomy of a person, the interior of buildings, the equipment of cars and the filling of computers. I suggest you to discover the anatomy of the products of the stop valves. The starting item for analysis is a ball valve for water. Ball valve from Herz company    This product is installed in almost every home in our country. This is an indispensable element of heating and water supply systems. It performs the function of overlapping the flow of the working medium (in most cases, water). The valve is very reliable and easy to use. But, at the same time has a complex design. The product consists of 10-14 elements (depending on the design of the stem assembly). Ball valve components Here is a list of the main components of the crane: - The handle (pos.1 (see picture)); - The body (2.1 and 2.2); - The stem (3); - The clamping nut (4); - The stem seal (5 (not visible in the figure)); - The ball (6); - The nut for fixing t...

It is always interesting to learn new technologies and new markets. For example, the North American market is always something special. Regardless of the specific product. Since we are primarily interested in heating and water supply systems, we will start from the system of pipelines and fittings. Pipes made of cross-linked polyethylene on American open spaces are very popular. Used mainly polyethylene, made with peroxide. Moreover, it is labeled as REX-A. Today I propose to familiarize myself with the market of fittings intended for such a variety of pipelines. Fittings for PEX pipes The market is popular with five types of fittings: 1. Crimp fitting 2. Fittings for quick installing (push fittings) 3. Expansion fittings 4. Compression fittings 5. Press fittings In addition to the first type, all fittings are widely used both in Europe and in Ukraine. It is more interesting to consider crimp fittings. Among the main producers of such pr...