Questions regarding pipe wall thickness and valve wall thickness
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Let’s discuss this: from the perspective of welding procedures and quality, if the wall thickness of the pipe differs from that of the valve, is it better for the pipe’s wall thickness to be greater or smaller than that of the valve?
Valves are cast and are usually quite thick. The pipes are relatively much thinner!
The pipe thickness is determined according to design requirements, while the valve wall thickness is based on pressure-bearing requirements. They are all products that meet national standards; choose them according to your needs.
The wall thickness of the valve is greater, as calculated based on temperature and pressure
The pressure resistance of a valve is related to its material and size; it’s not the case that the thicker the valve, the greater its pressure resistance. The wall thickness and material of the pipeline should be determined based on the required pressure resistance and the type of fluid in use. There seems to be a specific formula for calculation. For reference only!
Valves are classified by connection method into socket, flange, and butt-weld connections; the choice of connection method mainly depends on the design pressure of the pipeline and the medium transported within it. Valves serve to shut off flow and regulate it in pipelines; the key performance indicators include the pressure resistance of the housing, the tightness of the valve, and the material properties, with the latter being determined by the characteristics of the fluid being transported ； The pipe serves to transport the medium, and its key properties are pressure resistance and corrosion resistance. Both valves and pipes must be selected based on the aforementioned criteria, in accordance with the relevant standards. The thickness of the socket base inside socket-type valves, as well as the wall thickness of the butted ends of butt-welded valves, should match the wall thickness of the pipes, in order to avoid flow obstruction issues.
You are probably asking about the wall thickness of pipes and fittings; welding pipes and fittings with different wall thicknesses can result in misalignment defects
The pressure rating of the valve selected is generally one grade higher than that of the pipeline, especially under harsh operating conditions. Therefore, the thickness of valves is generally greater than that of pipe walls, resulting in higher strength