ryobi gas pressure washer 3000 psi horizontal

RYOBI GAS PRESSURE WASHER 3000 PSI HORIZONTAL PROFESSIONAL

Then they moved into the carwash industry in U.S.

“The pump with nine lives” first introduced a 4 GPM 700 PSI pressure washer pump in 1968. Pump types made by AR: Wobble, Axial Cam, Triplex Plunger. Used by these brand pressure washers: AR, BE, Briggs & Stratton pressure washer pump, Campbell Hausfeld, Craftsman pressure washer pump, Generac pressure washer pump, Kranzle, Mi-T-M, Pressure-Pro. They make pressure washer under the AR Blue Clean name and also sell their pressure washers under the Black & Decker and Michelin names. They also make electric motors under the Ravel brand name. Annovi Reverberi (AR)ĪR is an Italian pump manufacturer. Let me know if something should be added. They prefer to just say, “axial cam” or “triplex plunger” in their literature. Companies don’t seem to like putting what brand pump they use in their pressure washers. Now lets look at the different brands of pressure washer pumps. Lower operating speed allows it to run cool and this again increases operating life. Stationary seal means increased life, less prone to leaks and much higher pressures. Used in: Most pressure washers above 3000 PSI.The easy to access pump head and easy to replace valves make repair and maintenance economical. Their life span is basically limited only by how well you maintain them. They are nearly 90% efficient and run cooler as they run at less rpm than the engine. In a triplex (3 pistons) plunger pump the pistons stroke 120 degrees apart to offer smooth flow over the entire revolution of the crankshaft. You can see in the animation below it uses a similar setup to your car engine (crankshaft, connecting rods) to drive positive action pistons to suck in water and then push out water with each stroke.

RYOBI GAS PRESSURE WASHER 3000 PSI HORIZONTAL PROFESSIONAL

Professional level pumps use triplex pumps because it allows very high pressure and can run for thousands of hours before any maintenance. Crankshaft Driven Plunger Pump Triplex Plunger Pump Now we will look at the plunger pump which is crankshaft drive. Image is Screenshot from Video Source Linked Above Rotating mass can cause excess vibration if not properly balanced.įixed vs Variable Displacement – You can adjust the angle of the swash plate in the variable displacement piston pump to vary the flow. The cylinder seal is on the piston head and moves with each stroke causing it to wear. Cons: Runs at engine speed (read: high speed) and can’t be as easily cooled as triplex pump since the cylinders are rotating.Longer life and more efficient than wobble. Can adjust the flow by adjusting the swash plate angle. Used in: Most pressure washers with less than 3500 PSI.Their life span is somewhat comparable but slightly better to wobble pumps at around 500 – 800 hours (~2-3x lifespan of wobble). The operation allows for a larger oil reservoir and larger bearings, extending life. It rotates in the same axis as the drive shaft as it is directly connected. The swash plate angle causes the pistons to stroke as they go from one side to suck up the water and then the other to push out the water. You can see in the animation below it is similar to the wobble but slightly different in that the pistons actually rotate around the swash plate. Intermediate level pump that offers many advantages over the wobble and is capable of higher PSI and GPM. Cons: Many moving parts adds complexity, low flow.Pros: No seals moving back and forth with piston, self-priming, can run dry, can produce high pressures.Used in: Some pressure washers below 2500 PSI and low flow rate (less than 2 GPM).Their life span is somewhat comparable to axial cam pumps at around 200 – 400 hours (~3 hours/week for 2-3 years). Wobble pumps are not economically repaired as they have many intricate parts in tough to get to places and are sealed shut before leaving the factory. This causes the pump to be only 70% efficient because it has to push against the water and the springs. There is a large spring for each piston to allow the wobble plate to push against them. Let’s explain the pros and cons of each type and take a deeper look how each works: Drive Shaft Driven Piston Pump Wobble Plate PumpĮntry level pump that uses a wobble plate connected to the drive shaft to push pistons back and forth creating suction and then pushing the water out. Take a look inside each to get a better understanding of the differences:Īlso Read: 7 Little Known Facts (You Should Know) About Changing Pressure Washer Water Pump Oil Triplex plunger (3) pumps are camshaft/crank driven and use plungers.Wobble (1) and axial cam (2) pumps are directly driven by the drive shaft and use pistons.Pressure washer literature refers to 3 types of pumps (all are piston or plunger type):

Ryobi gas pressure washer 3000 psi horizontal