1. The impeller design have back blade, its function is a balance of axial force and the second is can stop after the big particles into the pump cavity is formed between the cover and impeller.

2. Between the impeller and the pump cover after the cavity is larger, can make full of cooling and lubrication of the mechanical seal.

3. Impeller has a vent, its role is to drain the gas within the medium, prevent dry running mechanical seal, the other is due to the pressure difference, between the impeller and the pump cover after cavity containing solid medium to maintain liquidity in the body, no deposit.

4. The mechanical seal of dynamic and static ring adopts silicon carbide material, good abrasion resistance.

5. Use big spring mechanical seals, can effectively prevent the jam, big spring don't contact with the media, to prevent corrosion and a small amount of leakage of medium.

6. Mechanical seal shaft sleeve and the axial clearance between the larger, medium leakage is easy to row away without clogging.

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