An overview of the production for you in double classification, function and maintenance of the valve

This article introduces the classification of the valves and role for you, hope through this article, can let everybody have a preliminary understanding of the valve. The classification of the valve. Valve according to the different function, can be divided into cut-off valve, regulating valve, check valve, safety valve, shunt valve and exhaust valve, etc. , each type of valve, function also each are not identical. Cut-off valve, cut-off valve, also known as closed valve, the effect is on or cut off the line in the medium. Cut-off valve class contains gate valves, globe valves, plug valves, valve, valve and diaphragm valve, etc. Eyelid valve: valve class contains control valve, throttle valve and the pressure reducing valve, the effect is control parameters such as pressure, flow rate of the medium. Check valve, check valve, also known as one-way valve or check valve, its effect is to avoid the medium flow backwards. Pump suction off the bottom valve and check valve class. Relief valve, safety valve is to avoid the effect of piping or equipment in the medium pressure beyond the rules, so as to achieve the goal of security maintenance. Diverter valve, shunt valve class contains all kinds of distributing valve and steam trap, the effect is distribution, separation or mixed medium pipeline. Exhaust valve, exhaust valve in the pipe system is indispensable auxiliary components, usually installed in the place such as the commanding heights or bend, eliminate residual gas in the pipe, tube road use power and decreased energy consumption. To understand the type of valve, the valve is mainly used to do? Valve main four a day, and the effect of globe, tonic, non-return and safety. Cut-off valve a important effect was the effect. Is cut off, Shut off) Circulation of fluid pipeline, don't make it, usually main valve are of the effect of various pipe. Regulate the another important effect of the valve is to regulate traffic, in accordance with the requirements of working condition of need or use medium flow in pipe, various parameters such as temperature, pressure, liquid level and the flow of control, it depends on the size of the valve opening to regulate. Non-return effects some piping requirements medium flow in the direction of an activity, but do not allow the reflux or back, it is necessary using the non-return valve ( Or a one-way valve) 。 It refers to activities rely on the media itself and take the initiative to open and closed disc, used to avoid the medium backflow valve, due to an active valve, its main effect is to avoid backflow medium, to avoid the pump and drive motor rotation, and the discharge of the container medium. Security role in order to avoid high-pressure container when fluid pressure is too high beyond the pressure limit of container and explosion, are installed on the container can be active pressure relief valve in a certain pressure, known as the relief valve. Such as boiler, compressed air storage tank, and some have a safety relief valve on the high-pressure reactor. The effect of the valve play safe. Other functions in addition to the above four kind of effect, valves and some effects, such as the effect of the safe system pressure; The valve in front of the high pressure to low pressure relief effect, to vent pressure effect, the drainage function of drainage effect; The sampling analysis and investigation of sampling effect; In front of the part and the fluid return process backflow effect. And the fluid transferred to another line up to effect the valve ( Three-way valve, four-way valve, etc. ) 。 The maintenance: of the valve. Valve is not in use for a long term, regular cleaning, clean the valve exposed on the surface of the dirt and dust, should be sealed at the same time, ensure the valve internal clean and dry. Neatly the valve to be stored in the indoor and ventilated, dry place, do not heap or in open air. 。 Valve into the line prior to installation, need to check the pressure and diameter of the valve, and clean up the dirt on the valve parts in transit. 。 Valve on the pipe installation, carried out in accordance with the valve connection correct installation, the valve installation position to consider whether the operator's operation after installation is convenient, is convenient for valve repair in the future. 。 Handle valves and valve handwheel when turned on or off, can't leveraged, wrench or other tools, so as not to damage the valve. 。 Evenly tighten valve packing gland bolts on, can't beat gland, tilt in the gland, and bruised or hinder the movement of the valve stem, valve leakage. 。 In use process, valves for the maintenance regularly, maintain the cleanness of the valve, transmission parts, should be lubricated regularly do once found the valve failure, must immediately stop using, find out the cause of the problem and clear the fault. The valve maintenance is a long-term process, is also a process on a regular basis. It also mentioned the importance of the maintenance of valve, so we need to attention to this problem.