According to the data sampling conducted by the State Bureau of Technical Supervision in 2002, the pass rate of qualified products in the industry of switch sockets and sockets is very low. In 2003, it was only about 60%. According to expert analysis, the low price of inferior raw materials is a direct factor in temptation of misbehavior and inferior product manufacturer's illegal operation. Due to fierce market competition, most manufacturers are catering to consumers' pursuit of low-price psychology, at the expense of product quality and cost reduction, although apparently Lowering the final selling price of the product has brought a major hidden danger to the residents' safety.
There is no room for the early switch of squandering to fascinating eye memories. It is always a long rope and a black box. However, in the current market, the switch sockets are quite different from the previous ones. In the era of the pursuit of personality. Switch products are just like mobile phones, displaying their unique charm beyond the safety switch function in their originality, style, and exquisite style. After visiting the lighting city, we will find that there have been more changes in this year's switch: a change from the past, the appearance of timeless, from white to silver, black; from square to diamond, rectangular; from ordinary materials To cortical materials, etc., the small switch is also given an artistic identity, and every detail changes make it more perfect.
At present, the market has a wide variety of switch sockets, ranging in price from as little as a few yuan to as high as a hundred dollars. Although technology and material selection may differ greatly, the products often do not seem to have any difference at first sight. Some domestic manufacturers of switch sockets exaggerate their technical data in the sales process and deceive consumers. They also make consumers feel at a loss when choosing. In the home life of today's electrification era, electrical appliances are widely used in various aspects, and the issue of electricity safety is extremely prominent.
The core technology of the switch socket and the selected material are very important for the safety of the application. For example, in a copper socket, ordinary brass is easily deformed after being inserted and extracted many times due to poor fatigue resistance, and the deformed socket will generate electric sparks and endanger the safety, not to mention the risk of short circuit. Some well-known brands such as Merlin Gerin used phosphor bronze with excellent elasticity and resilience. Although the cost has increased, such electrical risks have been avoided. Another example is the panel's internal and external materials, the imported PC material is not only not easy to aging, but also shock resistance, but also can be flame-retardant, obviously can greatly increase the safety of the panel. When the author visited the leading brand of low-voltage power distribution Mei Lanri, the person in charge of the product said: "The company's professional protection of product design and selection of materials, strict production management to ensure product quality, in good faith marketing modeling Corporate brand image is a fundamental principle for a socially responsible electrical component manufacturer."
In addition to Wushan is not a cloud consumer switch panel material, appearance, internal structure, feel and safety certification is difficult to really grasp, in fact, choose a well-known brand of products is a wise choice. In the era of this brand, the brand is everything and the brand is a symbol of quality and taste. It is understood that Merlin Gerin, Clipsal, TCL, Simon, etc. are the mainstream brands in the panel switch market. Several foreign brands are of high quality and high quality, and they are novel in design. They are the best choice for people with good economic foundation and high quality. . Domestic brands are of high quality and low price, but they are less sensuous in terms of visual aesthetics, but because they are more practical, they are still deeply loved by the general public.
Needless to say, when selecting switch sockets, reliability is always the first priority. It is the product quality that must be remembered in the chest. It is best to choose a strong brand. Taking Merlin Gerin as an example, the internal structure of the precision forged panel switch of the L86 texture series and the professionally developed safety technology make people sigh. L86 series panel switches use pure silver contacts while conductive bridges use silver nickel-copper composite materials. The silver material has excellent electrical conductivity, and the silver-nickel alloy has a very strong ability to suppress arcing, thus ensuring that the L86 series of switches can be opened and closed more than 80,000 times, far exceeding the international standard of 40,000 times. “The panel switch is an important part of the home electricity integration system. All designs must be based on safety. This is the fundamental responsibility of an electric parts manufacturing company.†said the responsible person of Merlin Gerin.
However, in this era of individuality and publicity, personalization will also extend to the home's switch panel. We take the example of the Merlin Gerin L86 texture series with the reputation of “European nobilityâ€. This series of products uses special materials such as high-quality Maple wood or 24K gold alloys of 30 years old, which cater to all kinds of special materials. The pursuit of the ultimate personalized decoration style. In the elegant design, it is the rigorous quality of Merlin Gerin. The relevant person of Merlin Geran said: "In the premise of guaranteeing the use of safety, switching the switch socket from functional articles to decorative articles is an international industry trend. We have only taken a step before it." Indeed, In a well-decorated home, the exquisite switch panel is no different from the finishing touch.
It is no accident that Bao Jianfeng has won the trust of consumers from the brand. Looking at the panel switch market, there is currently a mixed situation. Many brands that have become famous in other industries also scramble to share this market, but low-voltage power distribution is a relatively specialized field. It has always insisted on independent technology research and development and professional market operations. It is a successful brand such as Merlin Gerin. Way. Only years of professional accumulation can truly understand the safety needs of applications. The first consideration is to ensure the safety of consumers by taking into account the safety of consumers in product design and material selection limits.
The emphasis on professional brand image is also reflected in the strict requirements of the production process. Professional brands rely on their strong technology and technological strength to become familiar with the production of switch panels. Strict quality control ensures the quality and reliability of products that ultimately reach consumers. This point is not difficult to see from the rigorous technical testing of professional brands and superior technical parameters.
What is more worth mentioning is that professional low-voltage power distribution brands such as Merlin Gerin are not immersed in technology and processes, and they are conducive to installation and application is an important aspect of their “professional-led innovation†business development strategy. The screw cross is compatible with the straight knife, and the screw will not fall out of the hole after being screwed to the head. The larger copper pillar area will reflect the careful consideration of the professional brand to the user. On the other hand, the perfect combination of function and decorative effect makes the products of professional brands complete the distribution control application, but also adds a beautiful landscape to the overall design of the home.
Facing the situation that domestic and foreign brands are numerous and uneven, how to choose a panel switch that is both guaranteed in terms of quality and safety and can be matched with a modern family environment is increasingly becoming the focus of consumer attention. As long as the use of safety as the basic considerations, carefully identify the internal selection of products, seriously compare the formal technical indicators, look for well-known brands, you will be able to find a wide range of products that can make yourself and their families satisfied with the panel switch.
Lighting brand top ten brands switch socket home decoration design home decoration decoration style decoration home
A ball check valve is a check valve in which the closing member, the movable part to block the flow, is a spherical ball. In some ball check Valves, the ball is spring-loaded to help keep it shut. For those designs without a spring, reverse flow is required to move the ball toward the seat and create a seal. The interior surface of the main seats of ball check valves are more or less conically-tapered to guide the ball into the seat and form a positive seal when stopping reverse flow.
Ball check valves are often very small, simple, and cheap. They are commonly used in liquid or gel minipump dispenser spigots, spray devices, some rubber bulbs for pumping air, etc., manual air pumps and some other pumps, and refillable dispensing syringes. Although the balls are most often made of metal, they can be made of other materials, or in some specialized cases out of artificial ruby. High pressure HPLC pumps and similar applications commonly use small inlet and outlet ball check valves with both balls and seats made of artificial ruby, for both hardness and chemical resistance. After prolonged use, such check valves can eventually wear out or the seat can develop a crack, requiring replacement. Therefore, such valves are made to be replaceable, sometimes placed in a small plastic body tightly-fitted inside a metal fitting which can withstand high pressure and which is screwed into the pump head.
There are similar check valves where the disc is not a ball, but some other shape, such as a poppet energized by a spring. Ball check valves should not be confused with Ball Valves, which is a different type of valve in which a ball acts as a controllable rotor to stop or direct flow.
A diaphragm check valve uses a flexing rubber diaphragm positioned to create a normally-closed valve. Pressure on the upstream side must be greater than the pressure on the downstream side by a certain amount, known as the pressure differential, for the check valve to open allowing flow. Once positive pressure stops, the diaphragm automatically flexes back to its original closed position.
A swing check valve or tilting disc check valve is check valve in which the disc, the movable part to block the flow, swings on a hinge or trunnion, either onto the seat to block reverse flow or off the seat to allow forward flow. The seat opening cross-section may be perpendicular to the centerline between the two ports or at an angle. Although swing check valves can come in various sizes, large check valves are often swing check valves. The flapper valve in a flush-toilet mechanism is an example of this type of valve. Tank pressure holding it closed is overcome by manual lift of the flapper. It then remains open until the tank Drains and the flapper falls due to gravity. Another variation of this mechanism is the clapper valve, used in applications such firefighting and fire life safety systems. A hinged gate only remains open in the inflowing direction. The clapper valve often also has a spring that keeps the gate shut when there is no forward pressure. Another example is the backwater valve (for sanitary drainage system) that protects against flooding caused by return flow of sewage waters. Such risk occurs most often in sanitary drainage systems connected to combined sewerage systems and in rainwater drainage systems. It may be caused by intense rainfall, thaw or flood.
A stop-check valve is a check valve with override control to stop flow regardless of flow direction or pressure. In addition to closing in response to backflow or insufficient forward pressure (normal check-valve behavior), it can also be deliberately shut by an external mechanism, thereby preventing any flow regardless of forward pressure.
A lift-check valve is a check valve in which the disc, sometimes called a lift, can be lifted up off its seat by higher pressure of inlet or upstream fluid to allow flow to the outlet or downstream side. A guide keeps motion of the disc on a vertical line, so the valve can later reseat properly. When the pressure is no longer higher, gravity or higher downstream pressure will cause the disc to lower onto its seat, shutting the valve to stop reverse flow.
An in-line check valve is a check valve similar to the lift check valve. However, this valve generally has a spring that will 'lift' when there is pressure on the upstream side of the valve. The pressure needed on the upstream side of the valve to overcome the spring tension is called the 'cracking pressure'. When the pressure going through the valve goes below the cracking pressure, the spring will close the valve to prevent back-flow in the process.
A duckbill valve is a check valve in which flow proceeds through a soft tube that protrudes into the downstream side. Back-pressure collapses this tube, cutting off flow.
A pneumatic non-return valve.
Multiple check valves can be connected in series. For example, a double check valve is often used as a backflow prevention device to keep potentially contaminated water from siphoning back into municipal water supply lines. There are also double ball check valves in which there are two ball/seat combinations sequentially in the same body to ensure positive leak-tight shutoff when blocking reverse flow; and piston check valves, wafer check valves, and ball-and-cone check valves.
Check Valves, Water Check Valves, Brass Check Valves, Sanitary Check Valves
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