The valve is a control component in the fluid delivery system with functions such as cut-off, regulation, flow diversion, counterflow prevention, voltage regulation, shunt or overflow relief. Valves for fluid control systems, ranging from the simplest shut-off valves to the very wide range of valves used in the most versatile automation systems, come in a wide range of variants and sizes. Valves can be used to control the flow of various types of fluids such as air, water, steam, corrosive media, slurries, oils, liquid metals and radioactive media. So, in the long-term use of the valve should be how to maintain it? 1. Do not use long lever or long spanner wrench when closing or opening valves. 2. Stem thread often with the stem nut friction, the screw should be maintained at a certain amount of oil, lubrication, valve stem to ensure free movement, so flexible. Valve mechanical transmission, the timely addition to the gearbox to prevent biting. 3. Long-term open the valve, the sealing surface may be stuck with dirt; off, the valve can be gently closed, and then open a little, so you can use high-speed flow of media to wash away dirt, and then closed. 4 installed in the outdoor valve, to the protective sleeve on the stem to protect it from rain, snow, dust rust 5. Should always clean the valve, check, in order to keep all parts of the valve clean and complete. Do not place heavy objects on the valve, not to stand on the valve. 6. Open the steam valve, you must first rule out the system of condensed water, and then slowly open the valve, so as to avoid the impact of soft drinks; when the valve is fully open, the hand wheel should be reversed a little. 7. The spare valve should be placed in a dry place indoors, sealing the interface with wax cardboard or plug to prevent dirt from entering. Valve assembly requirements Clean components must be sealed for installation. The installation process requirements are as follows: 1, the installation workshop must ensure that clean, or to build temporary clean area, for example, with the newly purchased color bar cloth or plastic film, to prevent dust in the installation process. 2, assembly workers must be wearing clean cotton overalls, wearing a cotton cap, the hair can not be leaking, wearing clean shoes, hands wearing plastic gloves, degreasing. 3, assembly tools must be degreasing cleaning before assembly to ensure clean.
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