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The purpose of operation and maintenance of oxygen stop valve is to extend the service life of oxygen stop valve and ensure reliable opening and closing 2 Stem thread, often friction with stem nut, to be coated with a little yellow dry oil, molybdenum disulfide or graphite powder, lubrication 3 For the copper internal thread ball valve that is not opened and closed frequently, the hand wheel shall be turned regularly to add lubricant to the stem thread to prevent it from seizing 4 For outdoor oxygen shut-off valve, a protective sleeve shall be added to the valve rod to prevent rain, snow and dust rust 5 If the valve is mechanical, add lubricating oil to the gearbox on time 6 Always keep the oxygen stop valve clean 7 Always check and maintain the integrity of other parts of the oxygen stop valve If the fixed nut of the hand wheel falls off, it should be matched and cannot be used properly Otherwise, it will grind the four sides of the upper part of the valve rod, gradually lose the reliability of cooperation, or even fail to start 8 Do not rely on the oxygen stop valve to support other heavy objects, do not stand on the oxygen stop valve 9 The valve rod, especially the threaded part, should be wiped frequently, and the lubricant that has been soiled by dust should be replaced with a new one, because the dust contains hard sundries, which are easy to wear the thread and the valve rod surface and affect the service life Previous valve knowledge: lining valve knowledge: anticorrosive lining material introduction next valve knowledge: exhaust valve knowledge: composite exhaust valve principle· Characteristics and applicability of solenoid valve may 23, 2009 overview and working principle of steam trap may 22, 2009 ·General overview of butterfly valve may 21, 2009 overview of drain valve 2009-5-21 · overview of diaphragm valve 2009-5-21
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