High Chrome Cast Iron Alloy OEM Available G Type Centrifugal
Anti-Abrasive Sand Dredging Pump
Sand Pump Overview
Type G(GH) gravel pumps are designed for continuously handling the
most difficult high abrasive slurries which contain too big solids
to be pumped by a common pump.They are suitable for delivering
slurries in Mining, Explosive sludge in metal melting, Dredging in
dredger and river course, and other fields.
Main Features
Impeller
The impeller generally has three vanes or five vanes and wide
application range.It is made of wear-resistant high chromium alloy
cast iron(hardness≥58HRC,impact toughness≥9J/cm2).The impeller is
fixed on the pump shaft with double thread,and the thread
tolerances are inspected according to the pitch diameter of
thread.Disassembly rings are installed at the rear of the shaft
sleeve to make maintenance eas
Volute casing
The volute casing is made of wear-resistant and
compression-resistant alloy(hardness≥56HRC,impact
toughness≥8J/cm2).Advanced smelting technology combined with
casting process and heat treatment process guarantees smooth
casting surfaces and reliable internal qualiyt.
The bulge test will be carried out after molding,and the test
pressure is 2 times of the discharge pressure of the pump.If there
no leakage after 20 minutes,strength and tightness,strength and
tightness pressure test reports can be issued.
Liner plate
The liner plates are made of wear-resistant high chromium alloy
cast iron(hardness≥56HRC,impact toughness≥8J/cm2).
| Metal Pumps Material |
| No | Part | Material | No | Part | Material |
| 1 | Base | Cast Iron | 1 | Base | Cast Iron |
| 2 | Shaft | 4140 High Tensile Steel* | 2 | Shaft | 4140 High Tensile Steel* |
| 3 | Bearing Assembly | Timken (Cast Iron Body) | 3 | Bearing Assembly | Timken (Cast Iron Body) |
| 4 | Shaft Sleeve | 420 Stainless Steel | 4 | Shaft Sleeve | 420 Stainless Steel |
| 5 | Pump Casing | Cast Iron | 5 | Pump Casing | Cast Iron |
| 6 | Frame Plate Liner Insert | Rubber | 6 | Frame Plate Liner | 27% Chrome White Iron |
| 7 | Cover Plate Liner | Rubber | 7 | Volute Liner | 27% Chrome White Iron |
| 8 | Impeller | Rubber Coated High Tensile Steel | 8 | Impeller | 27% Chrome White Iron |
| 9 | Throat Bush | Rubber | 9 | Throat Bush | 27% Chrome White Iron |
| 10 | Cover Plate | Cast Iron | 10 | Joint Rings | Rubber |
| 11 | Stuffing Box | Cast Iron | 11 | Cover Plate | Cast Iron |
| 12 | Expeller | 27% Chrome White Iron | 12 | Stuffing Box | Cast Iron |
| 13 | Expeller Ring | Natural Rubber | 13 | Expeller | 27% Chrome White Iron |
| 14 | Bolts | Zinc Plated Steel | 14 | Expeller Ring | Natural Rubber |
| 15 | O-rings | Nitrile Rubber | 15 | Bolts | Zinc Plated Steel |
| 16 | Seals | Rubber | 16 | O-rings | Nitrile Rubber |
| 17 | Seals | Rubber | 17 | Seals | Rubber |
