Ball Valves for Plumbing Needs
More recently, on the PEX plumbing and radiant heating networks as brass fittings water shutoff dominated by two products: “valve cork entrance omental tapered Threaded Brass Ball Valve BVT012D” and “Sweat Brass Ball Valve BVS012D”. Passport service life of tube-omental valve – 8 years, the average life-at least 1500 cycles, time to failure – at least 400 cycles. In fact, these valves after 40-50 cycles begin to be capricious: cotton gland packing into an earthy colored porridge, soaked in water, and the cone stop tube, originally friction to the body affected by abrasive solids and sludge sediment in the water begins to hang out in the body, passing water in the closed position. In the event that you also take into account the extremely high coefficient of local resistance plug valves (3,5-5,7), it is not surprising that plumbers often just throw the locking cap, leaving the body dubious backdrop of the pipeline.
As sleeved valves, then the passport MTBF of 1,300 cycles, their actual performance is enough for 20-40 cycles, after which the sediment accumulated on the sealing saddle, do not allow completely block the stream by turning the valve itself in another “architectural extravagances.” Moreover, the coefficient of local resistance they simply record – from 16 to 20. That is, at a stream rate of 1 m/sec, passing through the valve, the pressure of the fluid is reduced by 1 m of water.
With the advent of the market brass ball valves, 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 economic stall. However, despite their apparent similarity, not all ball valves are really reliable and durable. Along with high-quality Italian taps, more and more pushed over in the trade cheap Polish, Chinese and Turkish valves, whose quality is far from perfect? In the struggle for the vast US market, some sellers van hàn quốc have started to distribute cheap “consumer goods” for branded products, quite simply to sell a fake, so I’d like to offer some practical guidance to buyers’ brass ball valves. Generally speaking, forgery in performance is much inferior to the original products. Their use in water and heating systems can lead to accidents and huge material losses. Counterfeits can cause serious damage and human health.
Wright Valves BVT034D recognized world leader in designing and manufacturing valves water Italy is known for such major firms as Matca-Norca, Wright Valves, Bugatti, Giacomini, RBM, Rastelli, Tiemme etc. Italian province of Brescia consists of a tremendous industrial zone, where the hangars is fittings under the brand name companies from Germany, Britain, USA, UAE and dozens of 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 work on 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.
My goal is either a fake – under cover, used well-known brand, at minimal cost to create an external object like a fake. First, what saves the underground businessmen, it is – raw. Shells taps and ball valves shall be manufactured from special grades of brass, the chemical composition of which in USA 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 make the brass surface hardness). Illegal vendors typically use non-ferrous metals, the content of impurities which are not controlled. As a result, manufactured valves, the percentage of lead content in which, studies show that reaches 5-7%. It is well known that an excess of lead in water is extremely harmful to health.