Problem with the drain valve numbering
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The method for coding the models of check valves is specified in the \"Method for Coding Valve Models\" (GBT 32808-2016); for example, CS45H-16. But there are models such as ES8BF available online; what is the basis for determining this model number?
Models such as ES8BF may be manufacturer-specific models or based on certain standards or series. These models do not follow the compilation method of the GBT 32808-2016 standard; instead, they are named based on the manufacturer’s own product classification and characteristics. It is necessary to consult the product manual of the specific manufacturer or contact the manufacturer to obtain accurate model information and its meaning. .