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Old 08-13-2019, 09:42 AM
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https://moyermarine.com/product/issp...e-gaug_09_178/
https://moyermarine.com/product/issp...2-gaug_10_179/

The inside diameter of the hoses/pipes/tubes in and out of the pump will certainly have an effect on its performance. The typical pipe I.D. used with our raw water pumps is 3/8" nominal, hose I.D. is usually 5/8".
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Neil
1977 Catalina 30
San Pedro, California
prior boats 1987 Westsail 32, 1970 Catalina 22
Had my hands in a few others
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