Frequently Asked Questions About Our Cleaning Equipment
A direct drive pressure pump is mounted directly to the engine shaft which makes the pump spin at a normal engine speed of 3450 RPM. A belt drive pump has a pully mounted to the pump shaft, driven by a belt attached to a pulley on the engine shaft. This allows the pump to turn at a lower RPM, typically between 1100-1750RPM.
Benefits of a Belt Drive Pump: Lower RPM, Lower Operating Temperature, More Vibration Absorption, Draws from Water Tank. These three factors result in an overall longer life on a belt drive pump.
Benefits of a Direct Drive Pump: Lower cost, More Compact, Less Weight
- To calculate what size quick connect nozzle you need, check out our Nozzle Size Chart. You will need to know your machines PSI and GPM to determine the proper size.
- To determine what degree nozzle you would need, here is a short break down:
- 0 Degree (Red Collar): This nozzle has the narrowest spray pattern and should only be used on very resilient surfaces (concrete, pavement, masonry, etc) with heavy dirt or debris.
- 15 Degree (Yellow Collar): This is the most common cleaning nozzle and is great for most heavy to moderate cleaning purposes.
- 25 Degree (Green Collar): This nozzle also works well for most cleaning projects with a lighter amount of dirt and debris.
- 40 Degree (White Collar): This nozzle has the widest spray pattern and works well for rinsing or softer surfaces like wood.
- If you have a nozzle that you’d like to replace with the same size, but you’re not sure what size it is, check out our Quick Connect Nozzle Sizing Diagram for help figuring out the size.
- For determining the size of your quick connect fittings (plugs and sockets/couplers), most 3-8GPM washers have the following sizes:
- Pump Outlet - 3/8" QC Socket or 3/8" QC Plug. Depends on manufacturer.
- High Pressure Hose - 3/8" FPT QC Socket on one end & 3/8" FPT QC Plug on the other.
- Inlet on Trigger Gun - 3/8" MPT QC Plug or 3/8" MPT QC Socket. Depends on manufacturer.
- Outlet on Wand Assy - 1/4" FPT QC Socket
It depends on what you are cleaning and how fast you want to get the job done. If you need to clean grease, oil, gum, tar, asphalt, soot, etc. then hot water does a better job of breaking down the grime. For both commercial & residential applications, hot water can decrease cleaning time and help detergents and chemical cleaners work better. They also sanitize in areas where bacteria is a problem. In many locations, you will need a hot water washer if you plan to clean during the cold winter months.
Hot water pressure washers heat water to temperatures above 120 degrees, with an average of 180 degree output but some models will reach up to 250 degree wet steam at full pressure. Industrial Steamers heat water to 300 degrees at approximately 250 PSI.
Cleaning Units (CU) is the result of multiplying the PSI by the GPM. Cleaning units gives the customer a measure of unit performance (efficiency) to compare one unit to another.
Other than the obvious color, the difference is that gray hose is considered non-marking, where black hose is not. Gray hose is great for cleaning driveways and sidewalks so you don’t leave black streaks on the concrete surfaces from dragging your hose around during the cleaning process.
If you’re using bleach or other corrosive chemicals in any of your applications, you will need stainless steel fittings or poly fittings to prevent corrosion. High Pressure rated stainless steel is the most heavy duty, therefore requiring fewer replacements over time. Brass and steel fittings work well for standard pressure washing applications, but will be replaced more frequently.
For equipment over 4000 PSI, most fittings will be stainless steel for the higher pressure rating.
You will need to know what the PSI (Pound-force per Square Inch) and GPM (Gallons Per Minute) of your machine to properly calculate what size nozzle you need in the Nozzle Size Chart.
No, we do not repair damaged hoses.
We sell several different kinds of detergents for many uses. Check out our Detergents page with information on each to determine which would be best for your application.
In short, soft washing is washing with low pressure – typically less than 500 PSI. A true soft wash system is a chemical application system for higher concentrates of chemical that a pressure washer is not capable of applying.
Soft Washing with a Pressure Washer: Applying chemical through your downstream injector at low pressure & rinsing with low pressure. Aluminator and JROD assemblies are commonly used for this technique.
Soft Washing with a Soft Wash System: Applying chemical through a completely separate system with a low pressure / high volume diaphragm pump. This allows you to apply your solution at a stronger ratio (vs. the pressure washer chemical injector that dilutes your concentrate) and remove staining from heavily saturated or hard to reach areas. Used commonly for roof cleaning.
These soft wash systems come in electric powered or gas powered. Electric systems are typically 60-100 PSI at 5.5-7 GPM. Gas systems are typically 150-300 PSI at 9-11 GPM. Gas systems can spray up to twice the distance of an electric powered soft wash system.
Lastly, soft wash systems are built to be corrosion resistant, made with mostly poly & stainless steel components to handle heavier concentrates & corrosive solutions. Applying chemicals with your soft wash system will save major wear & tear on your pressure washer and pressure washer accessories such as the hoses, triggers, injectors, reels, etc.
A 20” surface cleaner with 2 nozzles works best with 4-6 GPM while a 24” surface cleaner with 3 nozzles operates best with 5.5-8 GPM. 30" surface cleaners are ideal for 8-10 GPM. Minimum pressures and max temperature ratings vary by manufacturer.