DIRECT-CONNECTED FLEXIBLE DELIVERY PUMP
Classification: Products
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Main Materials
| Pump case | Gray Iron GG25 coated with high polymer wear-resistant and anti-corrosion coating |
| Motor shell | GG25 DIN 0.6025/ASTM A48-40BGray Iron GG25 DIN 0.6025/ASTM A48-40B |
| Impeller | Stainless steel coated with high polymer wear-resistant and anti-corrosion metal coating |
| O-ring | Nitrile rubber |
| Main shaft | Stainless steel AISI 420 |
| Upper mechanical seal | Graphite/Silicon carbide |
| Lower mechanical seal | Silicon carbide/Silicon carbide |
| basement | Carbon steel Q235 |
| Fixed bolt and nut | Stainless steel AISI 304 |
Equipment anti-corrosion
All metal surfaces in contact with sewage have taken effective anti-corrosion measures.
All bolts nuts and other exposed fasteners for the pump and component are made of stainless steel. All welding positions will do the derusting treatment by sandblasting. The stainless steel components surface should do the acid pickling and passivating treatment first. All the dust oil and other attachments shall be removed before treatment.
The non-machined metal surface of the carbon steel parts of the equipment is subjected to surface coating treatment and the surface treatment is performed before surface coating to remove all dust rust spots oil stains and other attachments and sandblasting and rust removal treatment. After sandblasting and rust removal apply two layers of epoxy primer and two layers of epoxy topcoat. The surface of the paint is smooth and clean without wrinkles and peeling and has good corrosion resistance and durability. The thickness of the paint film of the surface coating is 200～300μm.
