The Simpson WaterShotgun WS5050 is an industrial 5,000 PSI, 5.0 GPM belt-drive gas pressure washer built for contractors and facility crews who tackle the toughest cleaning and surface-prep work. With both high pressure and high flow, it strips graffiti, prepares surfaces for paint and coatings, cleans heavy equipment and agricultural machinery, and blasts away grime that lighter machines cannot touch.
Built for these jobs
- Graffiti and coating removal - 5,000 PSI strips paint, graffiti, and failing coatings from concrete and masonry.
- Surface prep before paint or sealing - clean and profile concrete, steel, and block for new coatings.
- Heavy equipment and agricultural cleaning - cut caked mud, grease, and chemical residue from machinery.
- Facility and fleet maintenance - the 5.0 GPM flow rinses large areas quickly.
Why the belt drive and Comet pump matter
The dual-belt drive system separates the Honda engine from the pump, which reduces heat and vibration transfer and extends the life of both - a key advantage over direct-drive machines on demanding, long-run jobs. A heavy-duty Comet industrial triplex plunger pump with ceramic pistons and thermal relief valves delivers reliable high pressure, the electric-start Honda engine starts easily, and a remote bolt-on unloader lets you control pressure at the gun. Low-oil shutdown protects the engine.
Specifications
- Model: Simpson WaterShotgun WS5050 (item 60243)
- Pressure / Flow: 5,000 PSI at 5.0 GPM (cold water)
- Engine: Electric-start Honda GX-series (49-state compliant) with low-oil shutdown
- Pump: Comet industrial triplex plunger pump, ceramic pistons, thermal relief valves
- Drive: Dual-belt drive (separates engine and pump to reduce heat and fatigue)
- Controls: Remote bolt-on unloader for controlled pressure
- Accessories: 50-foot hose, ergonomic spray gun, and 5 quick-connect nozzles
Frequently Asked Questions
What is the advantage of a belt-drive pressure washer over direct drive?
On a belt-drive machine the engine and pump are separated by a dual-belt system, which lowers heat and vibration transfer to the pump and lets the pump run at its ideal speed. That means cooler operation and longer engine and pump life on heavy, long-duration jobs - which is why belt drive is preferred for industrial 5,000 PSI work.
What can 5,000 PSI at 5.0 GPM clean that a homeowner unit cannot?
The combination of high pressure and high flow strips graffiti and failing coatings, profiles concrete and steel for paint, and removes caked mud, grease, and chemical residue from heavy and agricultural equipment. The 5.0 GPM flow also rinses large areas far faster than a 2-3 GPM consumer washer.
Is the WS5050 cold water or hot water?
The WaterShotgun WS5050 is a cold-water machine. Its cleaning power comes from very high pressure and flow rather than heat. For grease and oil removal where heat helps, a hot-water unit may clean faster, but for graffiti, coating removal, and surface prep, cold-water 5,000 PSI is the tool.
What routine maintenance keeps it running?
Check engine oil and the low-oil shutdown, service the air filter, use the thermal relief valve and proper unloader settings to avoid pump overheating during bypass, and pump-saver the Comet pump before storage or freezing. Keep belts tensioned and inspect nozzles for wear, since a worn nozzle drops pressure.
Discount Cleaning Products is an authorized Simpson dealer. Our US-based team can help you select the right nozzles, hose, and surface cleaner for industrial work, and Simpson backs the WaterShotgun with its commercial warranty coverage.
