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Your Guide to Hose Fittings: Everything You Need to Know

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We find fittings to be one of the most practical hose accessories. They can help maximize a hose’s function or even add to it. But we know that there are a plethora of hose fittings in the market, which most likely confused you.

That’s why we created this comprehensive guide. We’ll define hose fittings in detail, as well as go over some of their common types and uses. This way, you’ll have a good understanding of how this piece can help you in various contexts.

With nearly five decades of industry experience in auto detailing equipment and supplies, MTM Hydro Parts powered by Veloci now offers an extensive, high-quality selection of hose fittings; be sure to check it out!

What Is a Hose Fitting?

Hose fittings, connectors, adaptors, and couplings are all different names for the same thing. They’re basically small components designed to connect hoses together or to other equipment. 

You’ll find that hose couplings are available in a variety of shapes, sizes, and materials, each of which serves a different purpose. That’s why they’re used in diverse settings, including residential, commercial, and industrial. 

When shopping for a hose connector, you’ll hear the terms Male and Female. That’s because we manufacture them in two genders, with each one referring to the thread position on the fitting

Male fittings typically have pin-shaped protrusions with external threads. These external threads allow them to be plugged into female fittings or other tools with corresponding internal threads. In other words, male fittings have threads on the outside.

Conversely, female fittings are wider and feature internal threads that allow them to encircle or accept the male fittings. These internal threads are on the inside of the fitting, providing a threaded cavity for the male fitting to screw into.

In addition, there are quick connect fittings, which simplify the connection process. They consist of two main components: the "plug" and the "coupler" (which can also be referred to as sockets). 

The plug is typically a male fitting with external threads, and the coupler is a female fitting with corresponding internal threads. When you connect these quick connect fittings, you simply insert the plug into the coupler and secure them together by turning the plug, creating a fast and secure connection.

What Are the Main Hose Fitting Types?

Thanks to the remarkable versatility of these parts, hose connectors come in several types. However, there are three main ones that you should know about:

1. Water Fittings

  • Low-pressure water fittings

Starting off with the most basic variety, which you most likely have lying around in your garden, the water hose fitting. We primarily construct this type to connect hoses transporting water together or to other components. 

These fittings are quite popular in the domestic scene as they’re widely used in garden hoses or for watering plants.

Remember that garden hose fittings will certainly come into contact with water. So, always opt for ones made of rust-resistant materials, such as stainless steel and brass.

Speaking of, don’t forget to check out our premium, rust- and chemical-resistant Stainless Steel Garden Hose QC Kit. It features hose fittings and plugs for various accessories, including sprinklers, watering wands, and more—all for a fairly low cost! 

  • High-pressure water fittings
Water Fittings from MTM Hydro parts powered by Veloci

High-pressure water fittings are specifically designed to handle water systems that operate at elevated pressure levels, such as those used in industrial, commercial, and certain residential applications. These fittings are engineered to withstand the increased force and stress that high-pressure water systems generate.

High-pressure water fittings often use threaded connections, similar to low-pressure fittings. However, they need to have precise threading and a secure seal to prevent leaks under high pressure. NPT (National Pipe Thread) and BSP (British Standard Pipe) threads are commonly used for this purpose. 

All Veloci fittings are National Pipe Thread (NPT) which means they have a tapered male or female thread (depending upon the model). These fittings are versatile and find application in various settings, such as cleaning patios, power washing driveways, removing tough stains from concrete surfaces, preparing surfaces for painting, and even in industrial applications like cleaning heavy machinery. 


2. Pneumatic Fittings

To begin, we’ll give you a brief explanation of what a pneumatic system is. Pneumatic systems involve any equipment or machinery that operates on the force of compressed air or pressurized gas. 

If this definition doesn’t ring a bell, think of air compressors or dental drills; they’re examples of popular devices using this system.

Hose fittings are usually installed in pneumatic equipment for many purposes, like joining two hoses or controlling the air direction. 

Since this is a critical role, especially in industrial applications, these connectors are chemically resistant and have exceptionally tight seals to prevent leakage. 

3. Hydraulic Fittings

In most hydraulic systems, there are hydraulic high-pressure hoses that act as liaisons within their circuits. They help in securely transporting fluids between major hydraulic parts (pumps, motors, etc.). 

By fluids, we’re not just referring to water; they could be chemicals, petroleum oil, minerals, or else. This is why these hoses are quite common on engineering and mining sites. 

You can see how, under these conditions, the hydraulic hose fittings could be exposed to harsh and sometimes corrosive substances. 

So, to ensure smooth and safe fluid circulation, we strongly advise you to use hydraulic fittings that can withstand varying temperatures and high levels of pressure. They should also be resistant to rust and chemicals.  

Pressure washer hoses and hydraulic hoses share some similarities due to their common function of transporting fluids under high pressure. Both are constructed to withstand the significant pressure levels generated by their respective systems.

Pressure washer hoses are designed to carry pressurized water from the pump to the spray gun or nozzle. They play a crucial role in maintaining the integrity of the water pressure throughout the cleaning process.


What Are the Most Common Hose Fitting Functions?

Common Hose Fitting Functions

To understand how you can benefit from hose adapters, you’ll need to learn about their functions. We’ve listed five of the most important ones below:


When dealing with high-pressure systems, such as hydraulic systems, safety is paramount. It's crucial to always use connectors that are properly rated per manufacturer specifications to ensure the system's integrity and avoid potential disasters. 

Extending Length or Connecting

You don’t have to throw hoses away just because their length is impractical. Using fittings, such as union connectors, can help you link hoses together to extend their length.

You can also connect hoses to other structures like taps and sprinklers via adapters like couplings. 

Diverting or Combining Flow

When wanting to divide or divert flow through different hoses, you can always opt for fittings like tee and wye. You can also use both of these connectors if you want to combine flow from various sources.

Reducing Size

One of the special fittings that not many people are aware of is the reducer. It has two ends with different diameters. This comes in handy when you want to join a narrow hose with a bigger one or a structure with a wider opening. 

Controlling Flow

Whether it’s to control the water coming out of your low or high-pressure hose or fluids from a hydraulic pump, managing the exiting pressure is necessary in many cases. This is where valve components come in handy. 

Valve fittings simply connect the hose to the source of the supply and give you complete control over the outflow. 


Final Word

Now that you know the basic hose fitting types and functions, you can easily choose the variety that best suits your requirements. Just don’t forget to measure the diameter of your hose first, as that will determine the adaptor size you’ll need.

We can’t emphasize how important it is that you select a reliable fitting. Getting low-quality ones will give you a hard time. They may cause leakage, erode internally, or, worse yet, explode under pressure.

Shop now at MTM Hydro Parts powered by Veloci to ensure you get optimal performance from your hose and fittings!

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