Commercial Pressure Washer Pump 4000PSI 4GPM 1" Hollow Shaft Fits ZWD4040 Style
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About this product
This SJ commercial pressure washer pump is designed for heavy-duty applications, offering a substantial 4000 PSI pressure and a flow rate of 4 GPM. It features a 1-inch hollow shaft, making it compatible with ZWD4040 style configurations. Powered by a 10 HP / 7.5 kW motor, it operates at 3400 RPM, suitable for replacing or upgrading pumps in existing commercial pressure washer systems. The pump weighs 10kg and includes G1/2'' and G3/8'' threaded connections for inlet and outlet, respectively.
Our take
For those in need of a serious upgrade or replacement for a commercial pressure washer, this SJ pump looks like a solid contender. The 4000 PSI and 4 GPM flow rate are genuinely impressive, suggesting it can handle very demanding tasks. Its 1-inch hollow shaft is a key detail for compatibility, especially with ZWD4040 style units, so make sure to double-check your existing setup. While the 10hp / 7.5kw power and 3400rpm speed indicate strong performance, this is just the pump itself; you'll need to integrate it into a larger system. The 1-year warranty is a nice reassurance for a component of this type.
Pros & Cons
Pros
- High 4000 PSI pressure
- Strong 4 GPM flow rate
- 1-inch hollow shaft for specific compatibility
- Powerful 10 HP equivalent
Cons
- Pump only, not a complete unit
- Requires specific shaft compatibility
Specifications
- Brand SJ
- Type Pressure Water Pump
- Warranty 1 Year
- Country of Origin China
- Flow 4gpm / 18L/min
- Pressure 4000psi / 275bar
Show all 11 specifications
- Horsepower
- 10hp / 7.5kw
- Speed
- 3400rpm
- Inlet
- G1/2''thread
- Outlet
- G3/8''thread
- Item Weight
- 10kg
