Comparison of Imported Latex Paint and Domestic Latex Paint
Three trees paint entrance decoration latex paint paint home decoration
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Home interior decoration selection of interior wall paint Home decoration is mainly indoor decoration, where Wenzhou decoration company's coating is also mainly refers to the interior wall paint. Currently, there are several types of coatings on the market: Water-soluble interior wall paints Water-soluble interior wall paints do not wipe off powders, and they are inexpensive. The main products of Wenzhou Decoration Company are 106 and 107 interior wall coatings. The disadvantage is that it is not water-resistant, alkali-resistant, easily peeled off after being dampened, and is a low-grade interior wall paint. Latex interior paint latex interior wall...
First, the current interior decoration interior wall coatings are those types of low-grade water-soluble paints, polyvinyl alcohol dissolved in water, and then add pigments and other additives. To improve its performance and reduce costs to take a variety of ways, many brands, the main products are 106,107,803 interior paint. The disadvantage of this coating is that it is not resistant to water and alkali, and the coating is easily peeled off after being exposed to moisture. It is a low-grade interior wall coating and is suitable for general interior wall decoration. This kind of paint has the price...
First, the current interior decoration interior wall coatings are those types of low-grade water-soluble paints, polyvinyl alcohol dissolved in water, and then add pigments and other additives. To improve its performance and reduce costs to take a variety of ways, many brands, the main products are 106,107,803 interior paint. The disadvantage of this coating is that it is not water-resistant and alkali-resistant, and the coating is easily peeled off after dampening. It is a low-grade interior wall coating and is suitable for general interior wall decoration. This type of paint has ...
one. How to choose a variety of latex paint latex paint, and the manufacturer's formula is not the same, the production process is different, so that its performance and decorative effects are very different, what kind of latex paint used to decorate? This is a question people often ask. At present, there are a large number of imported latex paints on the market, and the price is 40-50 yuan/kg. The general reasonable amount is 5 square meters / kilogram, just the cost of the wall coating is needed 8-10 yuan / square ...
Do not buy latex paint, and recognize the brand identity. In home decoration, latex paint has become the first choice for consumers due to its many types of colors, gloss, feel and delicate appearance. Is latex paint toxic? What kind of latex paint is really toxic? Become the focus of attention of decorators. According to reports, there are many brands of latex paint on the market, and imports and domestic production go hand in hand, and the competition is fierce. The quality-guaranteed and better-reputed domestic brands are red lion and branch blue.
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15 fresh homes tell you what is a vanilla art 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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