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The question of why manhole covers are typically round (in some countries) was made famous by Microsoft when they began asking it as a job-interview question.[8] Originally meant as a psychological assessment of how one approaches a question with more than one correct answer, the problem has produced a number of alternative explanations, from the tautological (Manhole covers are round because manholes are round)[8] to the philosophical.
Another significant determinant of gate valve prices is the size of the valve. Larger valves require more material and manufacturing processes, which naturally increases costs. Additionally, the complexity of the valve design and the specific standards or certifications required for certain applications can further influence the price. For example, valves used in specialized environments such as hazardous materials handling may need to meet stringent industry standards, resulting in higher production costs that are reflected in the market price.
gate valve price
