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What are the differences between pumps 50GY20 and 50GY20A, and 65GY125A and 65GY125B?

2009-03-06View Original

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What are the differences between pumps 50GY20 and 50GY20A, and 65GY125A and 65GY125B?
Reply #22009-03-07
The impeller of pump 50GY20 has not been cut, and the impeller of 50GY20A has been cut once.; The 65GY125A impeller has been cut once, and the 65GY125B impeller has been cut twice.
Reply #32009-03-07
50GY20 means 50 is the caliber, 20 is the lift, 65GY125A means 65 is the caliber, 125 means the impeller diameter, A means the primary cutting of the impeller, B means the second cutting, and so on.

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