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Fisher® regulators and valves have traditionally been sized using
equations derived by the company. There are now standardized
calculations that are becoming accepted worldwide. Some product literature continues to demonstrate the traditional method, but the trend is to adopt the standardized method. Therefore, both methods are covered in this application guide.
Sizing flow valves is a science with many rules of thumb that few people agree on. In this article I’ll try to define a more standard procedure for sizing a valve as well as helping to select the appropriate type of valve.
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