Is degreasing required before valves leave the factory?
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I would like to ask everyone: for pipeline systems that require degreasing during design, the pipelines and valves are generally degreased during the construction and installation phase. Is it required that pipes and valves be degreased before leaving the factory? Is it mandatory or optional?
It is not necessary to remove oil and grease from pipes and valves before leaving the factory, but if the customer has specific requirements or if the product is used in certain industries (such as food, pharmaceuticals, etc.), oil and grease removal may be required in advance. .
As required by the purchaser; if there is no such requirement, it is generally not done.
The standards prior to installation must be met; pipes, fittings, valves, etc. do not undergo this degreasing process before leaving the factory. However, instruments are necessary, including sampling tubes. Such as those dedicated to oxygen, for example. In the case of purchasing complete sets of equipment with oil-free requirements, the equipment manufacturers must meet the degreasing standards before the equipment can be shipped. For reference.
Since it is an oil-removal pipeline, it’s best for the valves to be in an oil-removed state right from the factory; after all, valves are components, and trying to treat them after they have been installed in the pipeline means that some corners and gaps may not be properly cleaned
If it is an oxygen valve, JB/T 12955-2016 \"Technical Requirements for Valves Used for Oxygen\" should be followed; the standard requires that degreasing be carried out before the valve is assembled.