F43X-10 double-sealed self-cleaning anti-reverse water-sealing valve is the latest product developed by technicians. It is mainly used in overflow pipes of clean water tanks. Usually, the water seal in the valve can prevent odor from entering the clean water pool due to heavy rain. When the water level of the rain sewer pipe is increased due to blocked sewage or the like, the sewage can be prevented from flowing back into the clear water tank, which is a good sanitary protection device for water supply.
The valve has a simple structure, smooth and unobstructed overflow, and has a double water-sealing effect. It can block odors and sewage backwashing, has reliable performance and good effect, and the debris carried during sewage backwashing does not affect the sealing performance.
Third, the working principle
防逆水封阀主要由带存水弯的阀体及浮球盖板组件等组成，带浮球的盖板盖在阀体的密封阀座上，将阀腔分成内外两部分，内腔为清水部分，外腔通排水管道，当内腔充满清水时． F43X-1.0T anti-reverse water seal valve is mainly composed of a valve body with a water trap and a floating ball cover plate assembly. The cover plate with a floating ball is covered on the valve seat of the valve body, and the valve cavity is divided into two parts, the inner and outer parts. The inner cavity is the clean water part, and the outer cavity is connected with the drainage pipe. When the inner cavity is filled with clear water. Due to the floating ball function in the inner cavity, the pressure of the cover plate is reduced, and the flow is easy to be opened. After the overflow stops, the cover can reset itself. The valve seat is tightly closed to strictly block the odor and sewage backflow. If the water inlet valve of the pool is closed well, it will not overflow for several years, and the valve cavity is dry. The floating ball can increase the weight of the cover plate and better cover the valve seat. It can also strictly block the odor and prevent rain and sewage from pouring back into the clear water tank. . If sewage enters the external cavity of the valve body, the debris can only adhere to the outer surface of the cover plate and does not affect the seal of the valve seat. Therefore, the anti-backwater valve works reliably, has good effect, and is not prone to failure. And when debris is precipitated. The valve body can be automatically flushed out at the next overflow.
Fourth, the structure and installation dimensions
1 The installation dimensions of F43X-1.0T anti-reverse water seal valve are shown in Table 1.
Five, installation and role description
1. This valve is generally installed on the overflow pipe of the clear water tank, and is well protected
45℃倾斜安装，以免影响阀门盖板自动密封效果。 2. The valve should be installed horizontally in the direction of the inlet and outlet pipes, and should not be installed straight or inclined above 45 ° C, so as not to affect the automatic sealing effect of the valve cover.
3. There is no need to install an overhaul valve before and after this valve. If overhaul is required, it can be performed when the clear water tank does not overflow.
4. The valve has a strong ability to prevent contamination by debris. Generally, no maintenance is required, but it is necessary to check every two to three years whether the valve core is flexible and whether there is debris affecting the seal.
5. During inspection, just open the protective cover on the top of the valve, pull the valve core by hand and lower it freely.
Six, special tips
1. The anti-reverse water seal valve is installed on the overflow pipe of the clear water tank. When the previous anti-reverse water seal valve and the water trap or overflow well have no water in the valve, they cannot block the odor from entering the clear water pool. When the imported float shoe valve is very good, especially for newly built pools, there is often little overflow or no overflow for several years. Therefore, none of the above three devices can prevent odor from entering the clean water pool. The cover plate of this anti-reverse water seal valve The floating ball structure can block the odor regardless of the presence or absence of water, and maintain the good sanitary condition of the clear water tank.
2. The above three kinds of anti-reverse water seals are easy to produce sediment and silt when rain and sewage are poured back, without self-cleaning function or weak self-cleaning ability. The reverse water-sealing valve has anti-fouling and self-cleaning ability, and works safely and reliably.
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