Would you replace this pump?

Never greased the washer but have smeared silicon grease on the threads
 
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It was on a grunfoss course by their tech guys, also used to be in their silly little picture instruction books. Said if you are speccing.a pump to run to run at max then you should have a bigger pump.
 
Well I guess there's no point in manufacturing multi speed circulators.:)
 
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Very strange advice to be giving out and like you say steel waste of time making them multiple speed,what a weird world.Bob
 

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