Upload time:2023-09-01 11:28:03Clcks:
Valve storage and maintenance
1. The purpose of storage and maintenance is to prevent valve damage or reduce quality during storage. In fact, improper storage is one of the important reasons for valve damage.8. Valves placed outdoors must be covered with waterproof and dustproof items such as felt or tarpaulin. The warehouse where valves are stored should be kept clean and dry.
6. The valve stem, especially the threaded part, should be regularly wiped, and the lubricant that has been contaminated by dust should be replaced with a new one because the dust contains hard debris, which can easily wear the thread and valve stem surface, affecting its service life.
Maintenance of valve packing
1.
The packing is directly related to the key sealing components of
whether leakage occurs when the valve is opened and closed. If the
packing fails, causing leakage, the valve is also equivalent to failure,
especially for valves in urea pipelines. Due to their high temperature,
corrosion is more severe, and the packing is prone to aging.
Strengthening maintenance can extend the lifespan of the filler.
2.
When the valve leaves the factory, in order to ensure the elasticity of
the packing, it is generally based on static pressure testing without
leakage. After the valve is installed in the pipeline, due to
temperature and other factors, external leakage may occur. At this time,
it is necessary to tighten the nuts on both sides of the packing gland
in a timely manner, as long as there is no leakage. If there is any
external leakage in the future, tighten it again, and do not tighten it
all at once to prevent the packing from losing elasticity and sealing
performance.
3. Some valve packing contains molybdenum disulfide
lubricating paste. After several months of use, corresponding
lubricating grease should be added in a timely manner. When it is found
that the packing needs to be supplemented, corresponding packing should
be added in a timely manner to ensure its sealing performance.
Maintenance of valve transmission parts
During
the opening and closing process of the valve, the lubricating grease
originally added will continue to drain, and combined with factors such
as temperature and corrosion, the lubricating oil will also continue to
dry up. Therefore, the transmission part of the valve should be
regularly inspected, and if oil shortage is found, it should be promptly
replenished to prevent increased wear due to a lack of lubricant,
resulting in inflexible transmission or failure of the casing.
Valve
maintenance should be treated with a scientific attitude in order to
achieve the expected results and application goals of valve maintenance
work. In order to ensure normal production operation, reduce parking,
and increase economic benefits, it is necessary to do the following
three things well in terms of valves:
1.The correct selection of valves is the foundation.
2. Correct use of valves is crucial.
3. Proper maintenance is the guarantee.