Automatic exhaust valve use

Automatic exhaust valve is installed at the highest point of the system, used to release the heating system and the water supply pipes generated cavitation valve, automatic exhaust valve is widely used in manifolds, radiators, floor heating, air conditioning and water supply system. Automatic exhaust valve works: When there is air in the system, the gas accumulates in the upper part of the exhaust valve, the valve gas accumulation, the pressure rise, when the gas pressure is greater than the system pressure, the gas will make the cavity surface water drop, the buoy With the water level down, open the exhaust port; to be exhausted gas, the water level rise, the buoy also will rise, but close the exhaust port. If you tighten the bonnet on the valve body, the vent valve will stop venting. Normally, the bonnet should be open. Can also be used with the Shanghai Xingou production of the valve supporting the use of shut-off valve, so that the exhaust valve to facilitate the repair of the role of automatic exhaust valve: HVAC and HVAC systems in operation, the release of water heating gas Numerous adverse effects such as hydrogen, oxygen and the like can damage the system and reduce the thermal effects, which can cause a lot of undesirable consequences if not discharged promptly. Such as: corrosion caused by oxidation; the formation of airbags in the radiator; unbalanced hot water circulation is not smooth, so that some radiators do not partially heat; noise when the pipe runs with gas; vortex phenomenon circulating pump. Therefore, the system of exhaust must be promptly discharged, we can see the important role of the use of automatic exhaust valve. 1, single port exhaust valve Single port exhaust valve mainly by the valve body, valve, cover, stem, float, exhaust nozzle and other components. For small-diameter pipe (φ50-200 pipe), it acts as the exhaust pipe, so that the pipeline will not appear closed gas, air resistance, such as pump power failure at any time there will be negative pressure, automatic suction can protect the safety of the pipeline . 2, composite exhaust valve composite exhaust valve principle of action: When the water into the pipeline, stop the stopper in the lower part of the positioning frame, a lot of exhaust, when the air row is exhausted, the water into the valve floating ball drive plug Head to close, stop venting. Such as the normal operation of the pipeline will naturally produce a small amount of gas will converge to the upper part of the tube, to a considerable extent, the water level within the valve down, the ball at any time down from the small hole gas discharge. In the event of power failure, stop pump, the water flow inside the tube is empty, negative pressure will appear in the tube at any time, the float down, open the small hole to drive a large number of large holes into the air to ensure pipeline safety 3, Valve pipe in operation, the ball stopped at the bottom of the ball bowl, a lot of exhaust, when the tube row of air exhausted, the water burst into the valve, after the ball bowl and then respond to the float, the float floating closed, the pipeline in normal operation When a small amount of gas is concentrated in the valve to a considerable degree, the water level in the valve drops and the float drops, and the gas is discharged from the orifice. Such as the pump stops, at any time will produce negative pressure, the float drops at any time, a large number of inspiratory to ensure pipeline safety 4, the rapid discharge valve Quick exhaust valve design is reasonable, simple structure, small size, large displacement, I The factory made a lot of improvements on the basis of the original to make the KP more perfect. Exhaust valve for the highest point of the pipeline or closed place to exclude the gas pipe to clear the pipeline, the pipeline is functioning properly, the water output to meet the design requirements, such as the product does not contain gas in the pipe to form a gas pipeline resistance less than the design requirements. The power failure occurs when the pipeline is in operation. Any negative pressure at any time when the pump is stopped will cause the pipeline to vibrate or rupture. The row of suction valves rapidly inhale a large amount of air to prevent the pipeline from vibrating or rupturing, thus ensuring the safety of the pipeline. Exhaust valve dual port rapid exhaust valve works: When the need to discharge the gas inside the pipe, the valve stem should be rotated counterclockwise, so that the stem together with the valve so that the air inside the pipe under the pressure of water into the body cavity , And discharged from the exhaust nozzle, along with the water pipe filled the body cavity, so that the buoy in the buoyancy effect of water, moving up the exhaust nozzle plugged to achieve self-sealing, the pipeline in the normal line, the air in the water Under the action of the pressure, the upper part of the body cavity of the exhaust valve is continuously discharged to force the float to descend and leave the original sealing position. At this time, the air is discharged from the exhaust nozzle, and then the float returns to its original position to be self-sealing. Therefore, , The exhaust valve in the normal work of the valve is always open, the float repeat the above action, the air constantly discharged, when the need to overhaul or cleaning the body cavity, the valve should be closed. The exhaust valve is closed when the valve stem is rotated clockwise. 6, micro exhaust valve micro exhaust valve Under normal circumstances, the water contains about 2VOL% dissolved air, the main water delivery process, the air continuously released from the water, gathered in the pipeline at the high point, the formation of air bags (AIR POCKET), making it difficult to deliver water and reducing the system's ability to deliver water by about 5-15%. The main function of this micro exhaust valve is to eliminate the 2VOL% of dissolved air and is suitable for installation in high-rise buildings and pipelines in the plant area. The small pump station is used to protect or improve the water delivery efficiency and energy saving of the system. Single lever (SIMPLE LEVER TYPE) micro exhaust valve, an oval-shaped valve body, all internal components, including float, lever, bar, valve seat, etc. are 304S.S stainless steel, the internal standard exhaust aperture 1/16, suitable for PN16 working pressure environment 7, sewage compound exhaust valve Sewage composite exhaust valve for sewage pipe on the highest point or a place of gas closed, by excluding the gas pipe to clear the pipeline to reach normal jobs. If there is no exhaust valve installed, the pipe may be hindered at any time, which is the design capacity of the pipe that can not meet the design requirements. Second: Second, the power failure occurs when the pipe is in operation. The timely occurrence of negative pressure in the pipe will cause the pipe to vibrate or rupture. Suction) The air valve quickly sucked air into the tube to prevent vibration or rupture of the tube. This article Keywords: valve

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