| questions | answers |
|---|---|
| How do I know if I need NPT or another thread type for my fittings? | In the U.S., National Pipe Thread (NPT) is the standard for pressure washing equipment. If you're unsure, check the specifications on your existing parts or machine manual, as using mismatched threads will cause leaks. |
| How do I choose the right nozzle orifice size for my machine? | Select a nozzle size based on your pressure washer's GPM and desired PSI. Using a nozzle chart, cross-reference your GPM with the target PSI to find the correct orifice size, which ensures optimal performance and safety. |
| My chemical injector isn't drawing soap. What's wrong? | Common causes include using too much pressure hose (over 100-150 ft), a clogged injector orifice, or a nozzle that is too large. Ensure you are using a low-pressure "soap" nozzle to create the necessary suction. |
| Does the inside diameter of my pressure hose really matter? | Yes, a larger hose diameter (e.g., 3/8") reduces pressure loss over long distances compared to smaller diameters (e.g., 1/4"). For runs over 100 feet, 3/8" is the professional standard to maintain performance. |
| How do I select the right replacement pump for my pressure washer? | Match the new pump's GPM and PSI ratings closely to your original pump's specs. You must also match the shaft size (e.g., 3/4" hollow) and type (e.g., direct drive, belt drive) to ensure it fits your engine or motor correctly. |
| What's the difference between a high-pressure gun and a low-pressure applicator? | A high-pressure gun is built to handle the full PSI of your machine for cleaning hard surfaces. A low-pressure applicator, often used for soft washing, is designed for applying chemicals at low pressure and is not safe for high-PSI use. |
| Why are there so many different types of quick connects? | Quick connects come in various sizes (1/4", 3/8", 1/2") and materials (brass, stainless steel) to match different parts of your system. Stainless steel is best for chemical lines, while brass is common for general use. |
| What do o-ring numbers and materials mean? | O-ring numbers (e.g., -012) indicate their size, while materials like Buna, Viton, or Teflon determine their chemical and heat resistance. Viton is a popular choice for its resistance to common pressure washing chemicals like sodium hypochlorite. |
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