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This 4000 psi pressure washer pump uses a precision ceramic plunger and forged brass pump head to provide stable continuous water output of 15 liters per minute at 275 bar pressure. As a source manufacturer with a self-operated pump body manufacturer, Winspan provides flexible non-standard customization and direct supply in bulk to avoid trader premiums and ensure stable delivery.
suitable for the production of 13 to 15 horsepower gasoline engine cleaning machine plant. The product provides a 25.4mm hollow shaft, which can be directly flange-aligned with common gasoline engines, which perfectly matches and simplifies the assembly process of the whole production line, and improves factory efficiency.
suitable for deep-cultivated high-pressure cleaning accessories in the field of wholesalers and agents. As a major source factory, Winspan can provide highly competitive ex-factory prices and stable supply of vulnerable spare parts, ensuring that the distribution channel has excellent profit margins and excellent customer evaluations.
suitable for undertaking municipal sanitation pipeline dredging and engineering car wash equipment research and development system suppliers. This high-pressure pump provides a stable and lasting working pressure of 275 bar, and the high wear-resistant ceramic plunger can deal with the water quality baptism of various harsh field environments for a long time.
suitable for the construction of heavy-duty truck washing system or automatic contactless car washing machine equipment manufacturers. The pump’s excellent dual leak protection system is capable of 24-hour high-frequency intermittent start-up operation to ensure that the car wash system maintains low failure operation.
the wall thickness of the pump head is increased by 18% compared with the conventional design, can withstand continuous pulse high pressure of 275 bar for a long time, and the upper limit of pressure burst is increased by 35%, effectively eliminating the risk of valve body cracking caused by high load operation.
99.7 high-purity solid ceramic material is selected, the coaxiality tolerance of the plunger is controlled within 0.01mm, the friction heat during operation is reduced by 30%, and the average service life of vulnerable parts such as water seals is prolonged by 1.5 times.
equipped with double high and low pressure water seal system, the upper limit of temperature resistance reaches 60 degrees Celsius, to ensure that the equipment can still maintain zero micro leakage after 500 hours of continuous operation, greatly reducing the maintenance shutdown rate of the system.
The crankshaft is treated by a secondary nitriding quenching process, the internal metallographic structure is more uniform, and the fatigue strength is increased by 50%, which can perfectly match the power torque of a 13 to 15 horsepower high-power gasoline engine.
large size roller bearings are selected, the axial eccentric bearing capacity is increased by 40%, the vibration of the pump body under high speed operation is significantly reduced, and the transmission stability and heat dissipation efficiency are increased by 20% during operation.
the one-way valve core and spring are made of stainless steel, which improves the wear resistance and corrosion resistance vaporization capacity by 2 times, ensuring that the valve port of 4000 psi pressure washer pump is always tightly sealed when frequently opening and closing.
| Parameter Items | Technical Specifications and Indicators | Testing and Installation Standards |
| Work pressure | 275 bar / 4000 lbf | Full-load continuous testing for no less than 100 hours |
| Water flow rate | 15 liters per minute / 4.0 gallons | Actual deviation controlled within ±2%. |
| Supporting power | Gasoline engine or electric motor drive | It is recommended to match it with a 13 to 15 horsepower power source. |
| Input axis | 25.4 mm hollow shaft or 28 mm solid shaft | The journal grinding tolerance is controlled within 0.015 mm. |
| Mounting flange | SAE-J609B Standard Flange | Direct alignment installation without centering |
| plunger specifications | 18mm diameter solid ceramic | Surface roughness less than 0.1 micrometers |
| Lubrication system | Splash lubrication and large-capacity oil pan | Change the lubricating oil after 50 hours of first use. |
| unloading system | Built-in adjustable safety relief valve | The pump head automatically reduces pressure and circulates under unload conditions. |
In the high-end application level of 4000 psi pressure washer pump, common products on the market are often replaced by cast brass or cheap stainless steel, which is difficult to cope with industrial cleaning or severe thermal expansion and contraction in long-term continuous operation. This pump uses heavy-duty forged brass and precision high-frequency nitrided crankshaft, its strength increased by more than 30%. Through strict dynamic balance test, we have designed reinforced ribs inside the pump body, which effectively reduces the metal fatigue caused by high-frequency vibration, and is superior to competitors in stability. In addition, due to the poor heat dissipation of the crankcase, the traditional high-pressure cleaning pump can easily lead to deterioration of lubricating oil and burning of bearings when the temperature is high or under heavy load. winspan, by optimizing the structure of the crankcase heat sink, the surface heat dissipation area is increased by 15%, combined with the splash type large-capacity oil pan, the working temperature rise of the transmission components is reduced by 8 degrees Celsius. This not only prevents the oxidation of the lubricating oil, but also comprehensively improves the operating life of the whole machine under high load.
the excessive tolerance of the journal will lead to serious assembly vibration. The winspan is processed by high-precision CNC grinding machine, and the shaft hole fit tolerance is controlled at the extremely micron level to ensure the direct alignment and clearance-free assembly of the whole machine factory.
the traditional casting pump body is prone to invisible cracks under extreme pressure. winspan the use of special high tonnage heavy forging process, completely eliminate the internal pores, to ensure that the pump body is strong under high pressure without cracking.
failure of valves can cause pressure decay and dripping. winspan through the fine grinding of the surface of the ceramic plunger, with self-lubricating wear-resistant water seal, so that the sealing system can run continuously for ten thousand hours without replacement.
before starting, confirm that the crankcase has been filled with special lubricating oil, and the oil level should be accurately at the center of the red dot of the sight glass. Lack of oil or overload operation will cause damage to the bearing.
the water intake must reach 1.5 times of the rated flow rate of the pump. Air leakage is strictly prohibited in the pipeline. Insufficient water supply will cause serious cavitation and vibration of the pump body.
no water dry friction will cause the ceramic plunger to quickly heat cracking. Please start the power source to pressurize after the water source is connected and the air in the system pipeline is discharged.
the inlet end must be equipped with a filter with an accuracy of more than 50 meshes, and the fine sediment and other particles in the net must be cleaned regularly to avoid wear of the valve plate and valve seat.
This 4000 psi pressure washer pump uses a precision ceramic plunger and forged brass pump head to provide stable continuous water output of 15 liters per minute at 275 bar pressure. As a source manufacturer with a self-operated pump body manufacturer, Winspan provides flexible non-standard customization and direct supply in bulk to avoid trader premiums and ensure stable delivery.
275 bar
Rated working pressure
15 liters per minute
Maximum water flow
13 to 15 horsepower
Matching engine power
the wall thickness of the pump head is increased by 18% compared with the conventional design, can withstand continuous pulse high pressure of 275 bar for a long time, and the upper limit of pressure burst is increased by 35%, effectively eliminating the risk of valve body cracking caused by high load operation.
99.7 high-purity solid ceramic material is selected, the coaxiality tolerance of the plunger is controlled within 0.01mm, the friction heat during operation is reduced by 30%, and the average service life of vulnerable parts such as water seals is prolonged by 1.5 times.
equipped with double high and low pressure water seal system, the upper limit of temperature resistance reaches 60 degrees Celsius, to ensure that the equipment can still maintain zero micro leakage after 500 hours of continuous operation, greatly reducing the maintenance shutdown rate of the system.
The crankshaft is treated by a secondary nitriding quenching process, the internal metallographic structure is more uniform, and the fatigue strength is increased by 50%, which can perfectly match the power torque of a 13 to 15 horsepower high-power gasoline engine.
large size roller bearings are selected, the axial eccentric bearing capacity is increased by 40%, the vibration of the pump body under high speed operation is significantly reduced, and the transmission stability and heat dissipation efficiency are increased by 20% during operation.
the one-way valve core and spring are made of stainless steel, which improves the wear resistance and corrosion resistance vaporization capacity by 2 times, ensuring that the valve port of 4000 psi pressure washer pump is always tightly sealed when frequently opening and closing.
| Parameter Items | Technical Specifications and Indicators | Testing and Installation Standards |
| Work pressure | 275 bar / 4000 lbf | Full-load continuous testing for no less than 100 hours |
| Water flow rate | 15 liters per minute / 4.0 gallons | Actual deviation controlled within ±2%. |
| Supporting power | Gasoline engine or electric motor drive | It is recommended to match it with a 13 to 15 horsepower power source. |
| Input axis | 25.4 mm hollow shaft or 28 mm solid shaft | The journal grinding tolerance is controlled within 0.015 mm. |
| Mounting flange | SAE-J609B Standard Flange | Direct alignment installation without centering |
| plunger specifications | 18mm diameter solid ceramic | Surface roughness less than 0.1 micrometers |
| Lubrication system | Splash lubrication and large-capacity oil pan | Change the lubricating oil after 50 hours of first use. |
| unloading system | Built-in adjustable safety relief valve | The pump head automatically reduces pressure and circulates under unload conditions. |
the excessive tolerance of the journal will lead to serious assembly vibration. The winspan is processed by high-precision CNC grinding machine, and the shaft hole fit tolerance is controlled at the extremely micron level to ensure the direct alignment and clearance-free assembly of the whole machine factory.
the traditional casting pump body is prone to invisible cracks under extreme pressure. winspan the use of special high tonnage heavy forging process, completely eliminate the internal pores, to ensure that the pump body is strong under high pressure without cracking.
failure of valves can cause pressure decay and dripping. winspan through the fine grinding of the surface of the ceramic plunger, with self-lubricating wear-resistant water seal, so that the sealing system can run continuously for ten thousand hours without replacement.
suitable for the production of 13 to 15 horsepower gasoline engine cleaning machine plant. The product provides a 25.4mm hollow shaft, which can be directly flange-aligned with common gasoline engines, which perfectly matches and simplifies the assembly process of the whole production line, and improves factory efficiency.
suitable for deep-cultivated high-pressure cleaning accessories in the field of wholesalers and agents. As a major source factory, Winspan can provide highly competitive ex-factory prices and stable supply of vulnerable spare parts, ensuring that the distribution channel has excellent profit margins and excellent customer evaluations.
suitable for undertaking municipal sanitation pipeline dredging and engineering car wash equipment research and development system suppliers. This high-pressure pump provides a stable and lasting working pressure of 275 bar, and the high wear-resistant ceramic plunger can deal with the water quality baptism of various harsh field environments for a long time.
suitable for the construction of heavy-duty truck washing system or automatic contactless car washing machine equipment manufacturers. The pump’s excellent dual leak protection system is capable of 24-hour high-frequency intermittent start-up operation to ensure that the car wash system maintains low failure operation.
before starting, confirm that the crankcase has been filled with special lubricating oil, and the oil level should be accurately at the center of the red dot of the sight glass. Lack of oil or overload operation will cause damage to the bearing.
the water intake must reach 1.5 times of the rated flow rate of the pump. Air leakage is strictly prohibited in the pipeline. Insufficient water supply will cause serious cavitation and vibration of the pump body.
no water dry friction will cause the ceramic plunger to quickly heat cracking. Please start the power source to pressurize after the water source is connected and the air in the system pipeline is discharged.
the inlet end must be equipped with a filter with an accuracy of more than 50 meshes, and the fine sediment and other particles in the net must be cleaned regularly to avoid wear of the valve plate and valve seat.
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