What are the types of switch sockets and what is the role? Here's an introduction for everyone.

Switch socket type:

86-type switch: everyone's most common appearance of the switch socket is square, her external dimensions 86mm × 86mm, this switch is often called 86-type switch, 86 type is an international standard, many developed countries are installed type 86, It is also the most commonly used switch in engineering and home improvement in most regions of China.

Here is the introduction of Bolton's Type 86 switch. They are: simple and generous creation series, delicate and stylish 2V purple gold series, luxurious atmosphere G7 series! Creative series only white, 2V and G7 series have three colors, of which 2V's border is a bright spot, put on the effect is very good, play a finishing touch! G7 is a high-end product, whether it is quality or design has king style!

118 type switch: 118 type switch generally refers to the long strip switch. 118 type switch is generally free combination style: in the frame inside into different functional modules combined, used in Chongqing, Hubei, Guangxi and other places more. 118 type switch in the electrician's list is generally divided into small box, middle box and large box, the long size is 118MM, 154MM, 195MM, the width is generally 74MM, 118 type switch socket advantage lies in his DIY style! More flexible, you can change the color according to your needs and preferences, convenient disassembly, free style. For example, Bolton's Platinum 118 series is a good representative! There are three colors and different borders, so that your personality can be fully displayed!

Simple comparison: 86-type switch up to four open, (I personally think that no matter what brand of 86-type switch, I like to open and two open!) But 118 can be allocated to 8 open! However, 8 is still rarely used, 118 will be used less, but 86 is the national standard, he has some truth, and said that the switch socket installed at home, not just to perform his most basic functions, Of course, the basic function is better, choose a good style switch (not because of the Botton switch only to say that he is good, but Bowden switch style does look good, when I say this sentence, I must have seen a lot of switches Now, I'm not saying that other switches are not good-looking, and some brands of switches are also very good-looking, but the price,,,, and my identity in life are also consumers. I know that the requirement for a product as a consumer is Cost-effective, cost-effective products to get the favor of consumers, Burton's cost-effective is notorious!) Can also play a decorative function, can give you a warm home to add a lot of color! For electricians, 118 switches are more labor-saving. From a long-term safety point of view, it is recommended to buy 86-type switches.

120 type switch: 120 type common module takes 1/3 as the foundation standard, namely on a standard 120mm×74mm faceplate that installs vertically, can install the next three 1/3 standard module. Modules are categorized into 1/3, 2/3, and 1 bit sizes. The height of the 120-type finger panel is 120mm, which can be matched with one unit, two units, or three units.

There are two types of 120-type switches, one is a single connection, 74mm × 120mm, can be configured with a unit, two units or three units of functional parts; one is double, 120mm × 120mm, can be configured four Units, five units, or six units of functionality. The main consumer groups are concentrated in Hangzhou, Huzhou and Shaoxing in Zhejiang Province! For Chongqing consumers, this can be ignored!

Type 146 switch: Width is twice as wide as ordinary switch socket, such as some four-position switch, ten-hole socket, etc., the panel size is generally 86mm×146mm or similar size, and the center distance of the mounting hole is 120.6mm. Note: The long type cassette can be installed. 146 was more popular in the past few years and then slowly faded out of the market. At present, a small number of businesses in the market have a small amount of inventory.

Role: At present, there are various kinds of switch sockets in the market, and they are of different quality. This makes it difficult for consumers to purchase, and the switch socket is not only a kind of home improvement functional product, but also the main component of safe power, and its product quality and performance. Material plays a crucial decisive role in preventing fires and reducing losses.

Switch socket purchase style effect map villa design switch socket decoration home improvement home improvement home

Check Valves

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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