Various of Valves
The company PEX Universe offers not only popular models brass ball valves, but also a wide range of ball valves for water, made of iron or steel. Steel or cast iron housing provides additional structural strength, and chromium can delay the progression of corrosion processes in the long term. In our stock you can pick up those models
conform to the requirements of your project documents or the requirements of the customer-builder.
Brass Ball Valve
Despite the fact that the production of ball valves for water used by a variety of materials (steel and cast iron, ceramics and plastics), the most common option is now considered brass. It is polished and chrome (or nickel), forged brass ball valves provide a high degree of resistance to seasonal temperature changes, typical for the local climate. This such valves is resistant to impact many aggressive environments: for example, gasoline, lubricating oils, alcohols, and even liquids containing a small percentage of solids.
Ball valves
Ball valves are used as stop valves for the supply and the overlap of the liquid or gas in the domestic and industrial systems, heat, water and gas. If you need ball valves, which are for sale – one of the main thrusts of the company, then in our store you will always find dozens of high-tech models from leading manufacturers («Wright valves», «IVR», «EUROTERMO» and «ITAP»). The advantages of the most popular brass ball valves are:
- Low resistance to flow at full bore models
- High degree of corrosion,
- Design, allowing instant cut off the flow,
- Lack of influence of solids on the work of a ball valve.
Mixing Valves
Relatively recently in-house plumbing and heating networks as brass fittings cut-off dominated by two products: “Crane cork passing cone ball valves and mixing valves. Passport life mixing valve – 8 years, the average life-at least 1500 cycles, time to failure – at least 400 cycles. In fact, these mixing valves after 40-50 cycles begin to act up: cotton gland packing into a brown porridge, soaked in water, and tapered tube stop, which was originally friction to the body under the influence of abrasive solids and sediment in the water begins to hang out in the body, passing water in the closed position. If we take into account the extremely high coefficient of local resistance mixing valve (3,5-5,7), it is not surprising that plumbers often just throw the locking cap, leaving the body dubious decoration on the pipeline.
With regard to the coupling mixing valves, when the passport MTBF 1,300 cycles, their actual performance is enough for 20-40 cycles, after which the sediment accumulated on the sealing saddle, can not completely stop the flow by turning the mixing valve itself in another “architectural extravagances.” In addition, the coefficient of local resistance to them just a record – from 16 to 20. That is, at a flow rate of 1 m / s, passing through the mixing valve, fluid pressure is reduced by 1 m of water. column.
With the advent of the market brass ball valve, they immediately appreciated was evaluated, and the demand for these products increases, as well as their scope. Now, such products can be found in any hardware shop. However, despite their apparent similarity, not all ball valves are really reliable and durable. Along with high-quality Italian taps, more splash in the trade of cheap Polish, Chinese and Turkish cranes, whose quality is far from perfect. In the struggle for the vast Russian market, some vendors have begun to distribute cheap “consumer goods” for branded products, quite simply to sell fakes, so I’d like to give some practical advice to buyers brass ball valves. As a rule, forgery in performance is much inferior to the original articles. Their use in water and heating systems can lead to accidents and big material losses. Counterfeiting can cause serious damage and human health.
Ball valve IVR recognized world leader in the design and manufacture fixtures vodozapornoy Italy is known for such major firms as Wright valves, Itap, IVR, Giacomini, RBM, Rastelli, Tiemme and other Italian region of Brescia consists of a huge industrial zone, where the hangar is fittings under the brand name companies in Germany, UK, USA, UAE and a dozen other countries. In practice, up to 70% of all ball valves entering the world market, made in Italy, where the business is engaged in more than 2000 companies. Stiff competition forces the firms to constantly improve its products and production technology. At the heart of high performance ball valves of the best world producers is the perfection of their design, precise adherence to the requirements of production technology and strict control of chemical composition of materials.
But the goal of any forgery – hiding behind the famous brand name, at minimal cost to create an external object like a fake. The first, than save underground businessmen, it is – raw materials. Shells taps and ball valves shall be manufactured from special grades of brass, whose chemical composition in the Russian Federation are regulated by GOST and abroad – national standards. These standards include the copper content 57-60%, zinc – up to 40% lead within 0,8-2,2%. (Lead is required to give the brass surface hardness). Illegal producers tend to use non-ferrous metals, content of impurities which are not controlled. As a result, manufactured cranes, the percentage of lead content in which, studies show that comes to 5-7%. It is well known that an excess of lead in water is very harmful for health.
Another way of cheating customers – use to make shells more than a cheap metal – zinc. This is also the risk of counterfeiting. Crane of zinc has increased brittle and may crack on the mechanical and hydraulic influences. There are ball valves made from silumin (aluminum alloy). Their reliability is still lower. Savings metal encourages unscrupulous manufacturers to manufacture the valve body wall thickness from 1 to 0.5 mm. This is an extremely reduces their reliability. (For comparison, a standard manufacturer Wright valves taps have a wall thickness of 2 mm).
Shell and ball valves in the products of leading manufacturers are made by hot pressing or hot forging. Manufacturers producing counterfeit is not being spent on the purchase of such technology and its products are manufactured by casting. These products are of uneven surface of the body, flows can have heterogeneous structure of the material – with aerial shells and, hence, low reliability. Ball valves (balls) of counterfeit cranes are often not made of brass, and from transformer steel, coated or even without it. Steel balls quickly corrode and cease to be watertight. Copper in the brass alloy valve body makes it suspiciously easy. Steel ball compensates for this lack of weight, masking the presence of the body is unacceptable thin walls.
Ball – the heart valve. Leading manufacturers attach great importance to the quality of the surface of ball valves. Brass Balls are diamond grinding, they applied anticorrosion coating of nickel or chromium. As a result, the ball gets a perfect mirror surface. Sign of low quality products – a dim, muddy or rough surface of the ball.
It is useful to say how rigged cranes are disguised as the original. One of the tricks – misspelling the name of a famous company, for example, Bogati instead of Wright valves. Formally, this is not fake, since the original brand name is not used. There are cases of writing only the names of countries, for example, ITALY, instead of adopting made in Italy. Distortion of the famous trade mark, putting it, for example, in a diamond and a square or a circle, also serves to confuse the buyer. Evidence of fraud can be a lack of some of the markings required for specific manufacturers. Upon the sale of gas valves, and found such a primitive form of deceit, as a replacement for the faucet handles on the native yellow – gas (gas valves are more expensive). Price savings may be too high, so choose the most reliable ball valves from a range of recognized brands.
The general consumer is difficult to distinguish a fake ball valve from the original. Here are some simple tips to help in some cases this can be done. If you can not buy products directly from a distributor, you can contact him by telephone to clarify whether he is an official supplier of your seller. All known manufacturers of ball valves have their own web pages. Of these, one can learn about the required attributes, product labeling, design features, etc. Some manufacturers place the drawings of its products. When you’re all aware of the labeling, dimensions, weight and other characteristics of your product, you will easily determine its authenticity. If on such organizational arrangements you have no time, you can use some practical advice:
* Inspect the label on the valve body if the distorted name of the company’s logo or graphic or marked lack of the elements required for a given grade faucet, it is – a fake;
* If the surface is rough housing on it there are nodules, microcracks, then tap made by casting, it is – a fake;
* If the crane has a steel ball valve, which can be determined by a magnet, it’s too fake;
* If the mirror ball lock dim or dull, it’s – a fake;
* If the valve body is made of zinc or silumin it – a fake, see this can be scratched nickel-plated shell, if by him tread bright silver color, it’s – zinc, if white – silumin, brass is a light yellow color.
Unfortunately, the composition of the material without sophisticated chemical analysis can not be determined. As shown by studies conducted by experts from MISA, eight randomly selected retail outlets in Moscow, ball valves – six were made from custom alloys with high content of lead, iron, aluminum and zinc. Some insurance against this kind of fraud could make the retailer a certificate of conformity and hygienic certificate for the product. However, as we have said, a full guarantee of the authenticity of the ball valve can only official distributor of the manufacturer. Finally, an indirect indicator of the authenticity of the product is its price. European brass ball valve that meets all standards, even a 1 / 2 inches can cost less than 2 euros in retail trade.
How to choose a real ball valve Wright valves
The first thing to do – it’s just to look at the logo Wright valves. It should always look like the picture, that is – the letter “V” in a diamond. BALL VALVE Wright valves gas
The following is a look at the country of manufacture crane. It should be the inscription “Made in Italy” (Made in Italy) – produce ball valves, Wright valves in Italy, but not in countries that mark the products produced in them as “Made in China”, or “Made in Spain” . And if the seller claims the reverse – can be hard to believe – this man deceives you frankly. Inscription “Mode in Italy” or “Mode Italy” are designed for the fact that English is learned in school is not everything – but then comes to the aid of simple everyday shopping experience – every day, buying items at the store we are confronted with the inscription «Made in …» not only for foreign goods. And if you see a mistake in writing – it means exactly fake. In this case, the answer can only be one – any other inscription on the ball valves, which are called the Wright valves, except for “Made in Italy” says that in the hands you a fake.
It is very important to pay attention to the brand of brass. In its product uses a forged brass Wright valves brand CW617N. Of course on the bogus may be the same inscription, but the quality of the material, of course, will be worse. Such valves are usually low cost and light weight. Another practice to reduce the costs to manufacture fake brass valves from the secondary. But most importantly, it is not even a weak strength of the crane, made of substandard material, and the fact that such materials are many substances that pose threat to the health of consumers. So do not be lazy to ask the seller to show a certificate of conformity for products.
Ball valve for Wright valves water for heavier body forged fittings, unscrupulous dealers often made of transformer steel balls, which is used in industrial engines. Of course, the crane becomes heavier, but this steel tends to rust and eventually tap becomes tight and just stops in its core “responsibilities” – just tap “holds water”. The presence of steel parts can easily determine if there are grease from petroleum or mineral oils, well, or use the magnet. It is likely that the ball will be even brass, then why not look at the surface of the ball – it must have a high gloss, which is produced by diamond grinding. If the surface of the brass ball is cloudy in appearance and rough, to buy a valve just not worth it.
Under the handle of a faucet nut Wright valves has control seals, teflon seals and white (in fakes are often black rubber seals) are movable relative to the stem. If long-term use of ball valves will leak, then tighten the nut to it kiss the ring seal, and valve will again be in working condition. In the fakes are different similarity stem seals – it seems to be holding, but the seals are not pressed, and therefore the operation of the crane is not affected.
Another difference is that in the original Wright valves tap the nut can be unscrewed, but the stock could not be removed, due to the fact that the stem is inserted on the outside, but inside, which makes it impossible to escape the rod, even at very high overpressure. Such a construction crane was called Wright valves – “intrinsically safe”.
And the most simple – the color of the pens and their shape. According to the official directory plumbing valves handle valves for steam and water are painted black, and gas – in yellow.
