We all know that there are three major factors that affect valve life:
1 valve inner leakage: The main problem is the quality of the sealing surface
2 valve outside leakage: The main problem is the quality of the casting, but also packing problem
3 valve structure: The main problems in the design and processing of pieces
Here we discuss only the inner steel middle high pressure valve leakage problem, the requiement of valve sealing surfaces.
Valve sealing surface, at a predetermined pressure, temperature, medium, installation location, ensure safe and reliable seal; while in the manufacturing process, the sealing surface materials and structures, welding, machining, assembly and grinding process shoudl be good; sealing surface should also to be ease of maintenance, specifically requires the following: Continue reading “Valve sealing surface/inner leakage and deposited welding material”
