How are the I, II, and III categories of centrifugal pumps defined?
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How are the I, II, and III categories of centrifugal pumps defined? The national standards for centrifugal pumps also do not provide clear definitions for these three categories. Dear sea friends, let’s have a discussion.
Classification is relative; it depends on what you use to classify it
GBT16907 Class I, GBT 5656 Class II, GBT5657 Class III
If classified in this way, it is the classification method of the national standard system~~~ Category I is basically aligned with API610； Category II is basically in line with ISO5199; the standard number has already been posted on the 3rd floor, so no further mention is needed~~
Where has the VS6 vertical cartridge pump gone?
Where has the VS6 vertical cartridge pump gone?
This diagram still doesn’t correspond to centrifugal pumps of types I, II, and III.
GBT16907 Class I, GBT 5656 Class II, GBT5657 Class III. None of these standards clearly specify what Class I, Class II, and Class III entail. . .
GB/T 3215 is the one that corresponds to API610