Brass is by far the most common fitting material for pressure washers. It is an alloy of copper and zinc and with its low melting point is easy to cast and machine. To proper measure the fitting you need will require calipers. A measuring tape will work but it won’t be as good because we are talking about 1mm differences. Another benefit is safety. These fittings make it easier to connect and disconnect attachments, which means you’ll have less physical stress on your body. When you reduce the amount of time and effort it takes to change out attachments, you’ll reduce the likelihood of experiencing physical strain, making it easier and safer to use your pressure washer for longer periods of time.

Pressure washer gun and lance - This is the centerpiece of your setup. Make sure you choose a high-quality version that can handle the pressure output of your washer. Here are some other things to know about when talking power washer adapters: Male (M) vs. female (F) connections It needs to firmly connect the parts together and not break despite the constant tugging by the user Pressure Washers & Parts has a high quality range of Hose Fittings uniquely designed for the use with high pressure washers and cleaners. Gun swivel fittings are great. They prevent and unkink the hose, which is amazing. You’ll know what I mean if you’ve ever dealt with 50-feet of hose. Wrangling the hose when pressure washing is avoidable. With a gun swivel.

See also How To Troubleshoot And Repair A Pressure Washer That Won't Stay Running: A Comprehensive Guide Extension wands - These long, thin attachments allow you to reach high or difficult-to-access areas with ease while maintaining a safe distance from the pressure washer. Hose - Choosing a high-quality, durable hose is crucial for preventing kinks and leaks. Opt for a flexible hose that's easy to maneuver and won't get in your way. Because sometimes a pressure washer coupler will be NPT and sometimes it will be BSP. They don’t mesh together.

Flow Rate: The larger diameter of the 3/8" fitting means that it can handle a higher flow rate of water. This can be beneficial when using larger nozzles or attachments that require a higher volume of water to clean effectively. Even with digital calipers it can difficult. Some fittings are 3/8″, some are 22mm, some are 14mm on the inside diameter (some need to be 15mm), sometimes you’ll find fittings going off British pipe thread standards and some are labelled QC F or QC M to confuse. It works by allowing swivel (spinning) of the hose without you having to twist the spray gun and extension wand in big circles. You can just walk it out and the gun swivel twists out the hose kinks as you walk. It’s one of those fittings you can’t pressure wash without once you try it.While the 3/8'' attachment may be more substantial, it doesn't take away from its usability. Once you have it attached to your pressure washer, it's easy to maneuver and use. This attachment is built like a tank, making it sturdy and long-lasting. The electric pressure washer coupler will have internal diameter of 15mm instead of 14mm. That means if you try to connect your hose from your gas machine to your electric the hose female fitting will have the 14mm o-ring and the electric spray wand will have 15mm internal diameter. There’s 1mm of space – it will leak. What Fittings, Couplers and Adapters are Best to Own? Pros– Strong. Corrosion resistant. Easy to machine to different shapes. More affordable than stainless steel. Let’s take a deeper look what all the size mean on fittings. How to Measure Connections and Fittings

A: Yes, connection size plays a crucial role in the performance of a pressure washer. Using the correct size ensures efficient water flow and maximum cleaning power. An incorrect size can cause low pressure or low flow, which can affect the cleaning quality of the pressure washer. Your pressure washer will come with the fittings, couplers and adapters needed to make it work out-of-the-box (99% of the time). The main fitting sizes seen are pictured below with digital calipers to show their dimensions. M22 threads are common on pumps, hoses and spray guns

Pressure Washer Accessories

Pressure Drop: The downside of the increased flow rate of a 3/8" fitting is that it can cause a greater pressure drop. This means that the water pressure at the end of the hose may be lower than with a 1/4" fitting. For smaller jobs that don't require maximum pressure, a 1/4" fitting may be a better option. A pressure washer fittings connects pressure washer parts. It fits between the high pressure hose and trigger gun or between the pump and pressure hose to make them connect properly. For example: a 3/8″ pipe size according to NPT has a thread pitch of 0.05555 inches (1.411mm) and an outer diameter of 0.675 inches (17.145mm). That same 3/8″ pipe according to BSP has a thread pitch of 0.0526 inches (1.337mm) and outer diameter of 0.6560 inches (16.662mm). Brass, plastic and stainless steel are the most common material used in pressure washer hose fittings.