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With the northern temperatures continue to drop, all over the heating have started, like to dwelling at home otaku housewives are more and more dependent on the heating, the most terrible is the heating is not hot, or the radiator on the automatic exhaust valve leaks, flooded the home Are not a minority, and when it comes to heating is not hot, the first thing that comes to mind is the issue of radiator gas collection, in the final analysis is the issue of automatic exhaust valve heating, in view of some radiator manufacturers in order to reduce the radiator price, radiator with Are made of exhaust valve, and some still manual exhaust valve, often require manual exhaust, trouble, domestic exhaust valve biggest problem is either not exhaust, exhaust or drainage, in short, people do not worry , If there is a problem, right now is not strong ability to 90 after a big test, the market is looking forward to the quality of the automatic exhaust valve appears, the exhaust valve is in such a context came into being, the exhaust valve The advantages are as follows: 1. Heating automatic exhaust valve buoy with low density PP material, temperature 110 ℃, the material even if the immersion in water for a long time will not produce deformation It will not cause difficulties buoy activities. 2. Heating exhaust valve stem with rigid plastic, the lever and the buoy and the connection between the support are used to connect the activities, it will not produce rust in the long run, leading to the system can not work and leakage occurs. 3. Heating automatic exhaust valve lever sealing part of the face is spring-loaded, with the corresponding movement of the telescopic lever to ensure that the case of non-exhaust tightness. Automatic exhaust valves are widely used in manifolds, radiators, underfloor heating, air conditioning and water supply systems to release cavitation generated in heating systems and water supply pipes and to prevent oxidation caused by these excess gases. Heat dissipation Airbags in the formation of the device, hot water circulation is not smooth unbalanced, and the radiator is not hot, the pipeline with gas noise, circulation pump vortex phenomenon. Automatic exhaust valve performance parameters: Maximum working pressure: 10bar Operating temperature: 0-110 ℃ Minimum sealing pressure: 0.2bar Exhaust pressure range: 0.5-7bar Working medium: water or antifreeze automatic exhaust valve installation and use: 1. Automatic exhaust valve must be mounted vertically, that is, it must ensure that its internal floats in a vertical state, while affecting the exhaust; 2. Automatic exhaust valve installed, it is best to install with the cut-off valve, so that when the need to remove the row When the valve is overhauled, the system can be sealed and the water will not flow out. 3. The automatic exhaust valve is generally installed at the highest point of the system, which helps to improve the exhaust efficiency. 4. To prolong the service life of the automatic exhaust valve, If the conditions are met, it is recommended to carry out maintenance once a year, especially in areas with poor water quality and scaling.
A pipette, also known as a pipette gun, is a device used to quantitatively transfer liquids. When conducting research in analytical testing, a small or trace amount of liquid is generally removed with a pipette. Pipettes can be divided into gas piston pipettes (Air-displacement pipette) and external piston pipettes (Positive-displacement pipette) according to the principle. Gas piston pipettes are mainly used for standard pipetting, and external piston pipettes are mainly used to handle special liquids such as volatile, corrosive and viscous. Many people ignore the correct use of pipettes and some of the details.
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