Most pressure washers come with at least one handle either chrome or painted. Some models come with front and some with rear handles for convenience in moving and loading into the back of a truck, as well as to give added protection to the vital components.
High Pressure Outlet
Connection for high-pressure hose.
The pump draws water from an external source (usually a garden hose attached to a faucet) and pushes it with such force to produce pressures as high as 3000 and 5000 PSI. In comparison, a garden hose creates 40-50 PSI. Some pressure washers come with industrial-grade triplex (three plunger) pumps and some with duplex pumps (two plungers).
The nozzle is the restriction at the end of the wand that creates the pressure. Nozzles have different spray patterns that can affect the width and strength of the spray. For instance, the 40-degree (white) nozzle delivers a flat spray of about 40-degrees. There's also a 25-degree (green) and the most popular 15-degree (yellow) nozzles. Caution operators about the 0-degree (red) nozzle. It can cut into wood and cause damage.
OHV Technology improves efficiency, cools running, and reduces emissions. Same as 'overhead valve', an improved way to control exhaust and intake valves on internal combustion engines.
An industrial, more durable version of the OHV engine.
The unit for pressure is PSI (pounds per square inch), which actually determines how much pressure is directly applied on the surface being cleaned. The pressure that is delivered by the machine is directly responsible for breaking the bond between the debris and the object being cleaned. Our models typically have a pressure range from 1000 to 5000 PSI.
Pressure Washer Gauge
Ultimate Washer analog pressure gauges combine both a chemical seal and a pressure gauge into one unit. Diagram elements are circular shaped, convoluted membranes that are clamped around the rim between two flanges. The measured media (power washer) exerts a force on the diagram. A metal pushrod welded to the bottom of the diaphragm transmits the deflection of the diagram to the linkage. The linkage, in turn, translates the lateral motion of the push rod into a rotational motion of the pointer.
Pressure Washer Hose
There are two types of pressure hose. Wire-braid high pressure hose can be rated for up to 4500 PSI. Non-marking pressure hose is gray in color and it can be freely used on any surface without worries of possible rubber marks left behind. They are also usually rated for up to 4500 PSI.
A method of eliminating air from a pressurewasher so that starting the engine is easier.
Same as revolutions per minute. The amount of revolutions (turns) an engine makes in one minute.
Safety Relief Valve
The safety relief valve is the designed weak point in the pressure washer. If the unloader malfunctions, the safety relief valve will open and relieve system pressure safely.
Sewer Line Definition
A drain or passage to carry off water and filth under ground; a subterraneous channel.
The stainless steel frame, turbo tip, schedule 80 coil, and other parts and accessories are made of an alloy of steel chromium and sometimes another element (as nickel or molybdenum) that is practically immune to rusting and ordinary corrosion.
Provides storage for hose, gun and cleaning solution bottles.
This is the range of temperature over which device may be safely used; the temperature range which the device has been designated to operate.
A technique used to reduce the build-up of high temperature water within a powerwasher pump caused when the spray gun trigger is closed. Cycles water through pump when water reaches maximum water temperature. Some of our models have pumps designed to work with the water temperature of 145ºF, 160ºF and some as much as 180ºF. Warm water will discharge from pump onto ground. This system prevents internal pump damage.
The pressurewasher gun controls the flow of water. The flow is activated simply by squeezing the trigger and stopped when the trigger is released.
Turbo nozzle or turbo tip
A device used to increase the effectiveness of high-pressure water, by spinning a narrow stream of water in a circle at a high speed.
A device used to relive the water pressure within the pump whenever spray flow is blocked. It allows the engine or motor to continue running even when the operator lets go of the trigger on the spray gun and stops washing. It diverts the pressure, that would build up without the unloader, by taking the water from the exit side of the pump and loops it back to the inlet side in a continuous "bypass" mode. The unloader also returns the flow of water to the gun when the operator is ready to clean again.
Running the unit in bypass mode for extended periods of time increases water temperature, as the water is re-circulated. This hot water can damage the high-pressure pump. The majority of our units come equipped with a thermal pump protector that dumps this hot water and brings in cold water, thus preventing damage to the pump.
There are two common types of wands--the variable pressure (or dual lance) wand and the straight through wand. The variable pressure wand allows the user to simply twist the handle on the wand and reduce the spray pressure. If the chemical injector is attached, the soap or chemical will automatically be injected into the water stream after the pump when the pressure is turned down. Simply turn the pressure back up and the soap injector stops drawing soap. In addition to the convenience, this is the best way to apply soap because it never passes through the pump. Many soaps and chemicals are harmful to a high-pressure pump.
Water Flow (GPM)
The unit for water flow is GPM (gallons per minute), which is actually the amount/quantity of water used in a one-minute period. The volume of water determines how fast the dirt can be removed from the surface once the bond between the debris and the surface has been broken. The unit with higher GPM level will require less time to clean; consequently, a washer with the lower GPM level will entail more time for the same job performed.
High-grade power washers come with tubed, pneumatic tires instead of hard rubber or plastic tires. Tubed pneumatic tires are used for longer wear and easier maneuvering of the powerwasher on most surfaces. Additionally, pneumatic tires absorb vibration, which saves wear and tear on the working components.
There is one more factor to remember when buying power washers, which are sometimes equally as important as pressure and water flow. That's work. The unit for work is HP (horsepower), which actually determines how much power the machine has to clean the surface. Typically the more horsepower a machine has will allow for higher pressures or volumes or a combination of both. Larger engines are more powerful and therefore more capable of finishing the job quickly.