What do the letters Y and A in the YD343HA－10C DN900 model represent?
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What do the letters Y and A in the YD343HA－10C DN900 model represent?
Don’t write anything, nothing on it
The answer is: if you wrote it yourself, you can interpret it however you want. If interpretation is needed, it’s best to refer to the instructions or the drawings, as the information is there and it’s the most authoritative source.
These two letters should not be present in the valve markings; they were probably added by the manufacturer. Based on the model, it seems to be a standard hard-sealed cast steel butterfly valve
This model numbering is likely not standard; it might be an internal factory standard. Y—? , D—Butterfly valve, 3—Turbine-driven, 4—Flange connection, 3—Three-eccentric structure (where the sealing pair requires good sealing properties), H—Sealing surface material is iron-based stainless steel, A—? , 10—Engineering pressure of 1.0 MPa, C—Valve body material is carbon steel, DN300—Nominal size is 300 mm. For the specific method of model numbering, refer to GB/T 32808-2016