When the valve is installed, should the valve stem be lubricated, or will the material be selected?
Installation location: indoor lubrication, outdoor lubrication is preferred.
Such as for pure water system, do not add, other best add
Usually add, no matter the rod or the dark pole. If used in clean water, generally used: food grade silicone oil lubrication
Hello, GB/T24919-2010 "industrial valve installation, use and maintenance of general requirements," the specification of this does not require specific, general rod valve installation should be added grease. Specific depends on the implementation of instructions.
