The G-type single screw (progressive cavity) pump handles high-viscosity, shear-sensitive, abrasive and slurry media. A helical rotor rotates inside an elastomeric stator, creating sealed cavities that move liquid from suction to discharge. Flow: 0.1–150 m³/h, pressure: 0.6–2.4 MPa. CRITICAL: Never run dry — the rubber stator is destroyed within seconds. The 3GB triple screw pump is suited for low-viscosity oils at high temperature (up to 350°C), flow 2.4–241.7 m³/h.
| Series | Specification & Application |
| G Single Screw | Flow 0.1–150 m³/h · Pressure 0.6–2.4 MPa · High viscosity, abrasive slurry, sludge |
| 3GB Triple Screw | Flow 2.4–241.7 m³/h · Temp up to 350°C · Low-viscosity oil at high temperature |
What media is the G-type screw pump suitable for?
High-viscosity oils and resins (above 1500 cSt), sludge, slurry, bitumen, food pastes, biological fluids, shear-sensitive polymers, and abrasive-containing liquids — provided solids are below the minimum flow passage dimension. Stator material (NBR / EPDM / FKM) must be matched to the chemical and temperature.
G wastewater screw pump utilizes a rotary positive displacement principle, primarily consisting of a rotor and an elastic stator that continuously mesh to form sealed cavities, which allows the medium to be uniformly propelled axially, achieving the pumping objective. This method of conveyance results in low internal flow velocity, constant volume, and stable pressure, thus better preventing damage to the structure of the medium being transported.
- Environmental Protection: iIt is particularly suitable for treating industrial wastewater, domestic sewage, and sludge containing solid particles and short fibers, such as in oil-water separators and plate and frame filter press equipment.
- Petroleum Industry: Transporting crude oil, mixtures of crude oil and water, mixtures of natural gas and water, and injecting polymers into geological formations.
- Shipbuilding Industry: Circulating and transporting materials such as bilge water, oil and water mixtures, oil residue, and oily wastewater during ship cleaning.
- Printing Industry: High-viscosity inks, wallpaper PVC polymer pastes, and paper pulp and short-fiber slurries of various concentrations.
- Food Industry: Various viscous starches, distiller's grains, grain residues, various sauces, fruit pulp, and solid slurries.
- This pump provides a uniform flow rate with minimal pressure pulsation during operation, making it suitable for applications requiring high flow stability.
- It can maintain a stable output pressure within a certain pressure range, making it suitable for applications requiring precise pressure control.
- This series of pumps has excellent self-priming capabilities, allowing it to self-prime and transfer media in a short time.
- It has a small number of parts, reducing potential failure points and improving reliability.
| Model | Flow (m³/h) | Pressure (MPa) | Speed (r/min) | Motor Power (kW) | Inlet (mm) | Outlet (mm) |
| G10-1 | 0.1 | 0.6 | 960 | 0.55 | 25 | 25 |
| G10-2 | 0.1 | 1.2 | 960 | 0.55 | 25 | 25 |
| G13-1 | 0.4 | 0.6 | 960 | 0.55 | 25 | 25 |
| G13-2 | 0.4 | 1.2 | 960 | 0.55 | 25 | 25 |
| G15-1 | 0.6 | 0.6 | 960 | 0.55 | 25 | 25 |
| G15-2 | 0.6 | 1.2 | 960 | 0.75 | 25 | 25 |
| G20-1 | 0.8 | 0.6 | 960 | 0.75 | 25 | 25 |
| G20-2 | 0.8 | 0.6 | 960 | 1.1 | 25 | 25 |
| G25-1 | 2 | 0.6 | 960 | 1.5 | 32 | 25 |
| G25-2 | 2 | 1.2 | 960 | 2.2 | 32 | 25 |
| G30-1 | 5 | 0.6 | 960 | 2.2 | 50 | 40 |
| G30-2 | 5 | 1.2 | 960 | 3 | 50 | 40 |
| G35-1 | 8 | 0.6 | 960 | 3 | 65 | 50 |
| G35-2 | 8 | 1.2 | 960 | 4 | 65 | 50 |
| G40-1 | 12 | 0.6 | 960 | 4 | 80 | 65 |
| G40-2 | 12 | 1.2 | 960 | 5.5 | 80 | 65 |
| G50-1 | 20 | 0.6 | 960 | 5.5 | 100 | 80 |
| G50-2 | 20 | 1.2 | 960 | 7.5 | 100 | 80 |
| G60-1 | 30 | 0.6 | 960 | 11 | 125 | 100 |
| G60-2 | 30 | 1.2 | 960 | 15 | 125 | 100 |
| G70-1 | 45 | 0.6 | 720 | 11 | 150 | 125 |
| G70-2 | 45 | 1.2 | 720 | 18.5 | 150 | 125 |
| G85-1 | 65 | 0.6 | 720 | 15 | 150 | 150 |
| G85-2 | 65 | 0.6 | 720 | 30 | 150 | 150 |
| G105-1 | 80 | 0.6 | 720 | 22 | 200 | 150 |
| G135-1 | 100 | 0.6 | 720 | 30 | 200 | 150 |
⬆ Scroll for all 26 published models. Progressive-cavity pump models. Flow m³/h at 0.6 MPa unless noted.
| Model | Flow (m³/h) | Flow (L/min) | Pressure (MPa) | Speed (r/min) | Motor Power (kW) |
| 90*2-42 | 28.2 | 470.9 | 0.6 | 950 | 11 |
| 90*2-42 | 27.5 | 457.6 | 1.0 | 950 | 15 |
| 90*2-42 | 43.1 | 718.8 | 0.6 | 1450 | 15 |
| 90*2-42 | 41.9 | 698.5 | 1.0 | 1450 | 18.5 |
| 90*2-46 | 34.0 | 566.7 | 0.8 | 950 | 11 |
| 90*2-46 | 52.6 | 875.4 | 0.6 | 1450 | 15 |
| 90*2-46 | 520 | 866 | 0.8 | 1450 | 18.5 |
| 90*2-46 | 51.4 | 8561 | 1.0 | 1450 | 22 |
| 100*2-46 | 48.0 | 800 | 0.8 | 950 | 15 |
| 100*2-46 | 72.7 | 1212 | 0.6 | 1450 | 18.5 |
| 100*2-46 | 72.0 | 1200 | 0.8 | 1450 | 22 |
| 100*2-46 | 71.2 | 1187 | 1.0 | 1450 | 30 |
| 100*2-51 | 56.9 | 948.9 | 0.6 | 950 | 15 |
| 100*2-51 | 55.7 | 928.6 | 1.0 | 950 | 30 |
| 100*2-51 | 86.9 | 1448.3 | 0.6 | 1450 | 22 |
| 100*2-51 | 850 | 1417.2 | 1.0 | 1450 | 37 |
| 110*2-46 | 60.9 | 1015 | 0.6 | 950 | 18.5 |
| 110*2-46 | 58.9 | 951.7 | 1.0 | 950 | 30 |
| 110*2-46 | 96.7 | 1611 | 0.6 | 1450 | 30 |
| 110*2-46 | 94.6 | 1577 | 1.0 | 1450 | 45 |
| 120*2-42 | 67.9 | 1131 | 0.6 | 950 | 18.5 |
| 120*2-42 | 65.4 | 1090 | 1.0 | 950 | 30 |
| 120*2-42 | 108 | 1802 | 0.6 | 1450 | 30 |
| 120*2-42 | 105 | 1760 | 1.0 | 1450 | 45 |
| 120*2-46 | 79.6 | 1327 | 0.6 | 950 | 22 |
| 120*2-46 | 77.2 | 1285 | 1.0 | 950 | 37 |
| 120*2-46 | 126 | 2101 | 0.6 | 1450 | 37 |
| 120*2-46 | 123 | 2059 | 1.0 | 1450 | 55 |
| 150*2-46 | 158 | 2640 | 0.6 | 950 | 45 |
| 150*2-46 | 154 | 2582 | 1.0 | 950 | 75 |
| 150*2-46 | 241.7 | 4029.7 | 0.6 | 1450 | 7590 |
| 150*2-46 | 236.5 | 3942.2 | 1.0 | 1450 |
⬆ Scroll for all 32 published models. Triple-screw pump models for asphalt / heavy fuel. Flow in m³/h & L/min; pressure up to 1.0 MPa.
When should I use a screw pump?
Screw pumps are useful for viscous, abrasive or temperature-sensitive liquids where a steady, low-pulsation flow is preferred.
Can a G-type screw pump handle solids?
G-type progressive-cavity screw pumps can handle certain suspended solids and abrasive media when rotor, stator and speed are correctly selected.
What data is required for screw pump selection?
Provide medium, viscosity at pumping temperature, flow, pressure, temperature, solids content, particle size and required materials.
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