1. Energy-saving measures
 (1) Plastic magnetic pump: advanced hydraulic model, rotomolding process of pump casing.
 (2) Metal magnetic pump: advanced hydraulic model, Hastelloy C with high specific resistence of isolation sleeve and impeller flow channel polishing.
 
 2. Energy-saving effect
 Plastic magnetic pump:
 (1) Advanced hydraulic model improves efficiency by 4-8%;
 (2) Rotomolding process of pump casing is 9-12% higher than lining plastic.
 Metal magnetic pump:
 (1) Advanced hydraulic model improves efficiency by 4-8%;
 (2) Hastelloy alloy isolation sleeve increases efficiency by 14-18% compared with stainless steel isolation sleeve;
 (3) The polishing efficiency of the impeller channel is 4-8% higher than that of unpolished.
 
 3. Energy saving value
 (1) Plastic magnetic pump: After 3-4 years of use, the equipment investment can be recovered by saving electricity;
 (2) Metal magnetic pump: After 1-2 years of use, the equipment investment can be recovered by saving electricity.