Assembly and commissioning
A valve (metal sealing ball valve) in the assembly of all parts before inspection by the quality inspection department, failed not to assemble the parts.
2 threaded fasteners surface, the assembly can be coated molybdenum disulfide grease (paste) or equivalent effect of paint, killed to prevent the phenomenon.
3 valve should be in strict accordance with drawings and technical documents related to the assembly and commissioning, should ensure that sports a flexible, without any jamming phenomenon.
4, each valve should be at least done three times before leaving the factory switch with load testing, stable and reliable.