Self-suction pump back is to digest the advantages of similar foreign products, surveying and improving the design, compact structure, manufacturing precision. Self-suction pump is better than the characteristics of centrifugal pump, which is able to suck mixed with air or foam liquid, or even in the air alone, still pumping their own suction, self-suction pump is a positive displacement pump. Standard Design: The static ring of the hygienic mechanical seal consists of AISI316L steel embedded with graphite and the moving ring is made of silicon carbide. Material: All liquid components pump housing, pump cover and impeller are made of stainless steel AISI316L; Motor cover made of AISI304 stainless steel, EPDM rubber ring seals have been made. External surface: stainless steel liquid part of the material: SUS316 stainless steel Maximum inlet pressure: 0.5MPa Temperature range: -10 degrees to +140 degrees Noise level: less than 85dB (A) Voltage and frequency: 3 ~, 50Hz, 240V / 380-420V / 660-690V