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Old 06-11-2010, 06:38 PM   #5
01PPUMP
 
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Name: 01PPUMP
Title: Too Much Time
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Join Date: Aug 2006
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Posts: 1,164
40-45 psi is plenty of pressure there is no gain above that. As for max pressure the seals will live a long time well over 50psi I would be more worried about cavitaion and eroding on the inside of the pump with anything over that. Dual feed with 5/8 line at 40psi and you will have plenty of psi and volume.
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