Garden Hose Thread vs NPT

Garden Hose Thread vs NPT

There are different connection types available in the market, and if you look at them, you will notice that they are a bit difficult to differentiate.

The best garden hose thread and NPT are the best example because these connection varieties come with several connection combinations, making it a challenge for you to tell which one you should choose for your personal needs.

Don’t worry, because we have got your back. From the following article, you will find all about garden hose thread vs npt. For your benefit, we have discussed the threads individually to understand their features and purposes easily.

With this information, you won’t be frustrated or confused if you plan to purchase one of them. So, without further ado, let’s get started.

What Is a Thread?

Before we dive into the difference between Garden Hose Thread and NPT, you should know about the meaning of a thread.

A thread looks like a ring that you will see on the faucet’s outside portion. In the case of a garden hose fitting, you won’t find it outside as it is situated on the inside.

This easily fits like a screw, and it won’t cost you much physical effort. Some thread allows only water to pass through with zero leakage issues. On the other hand, a powerful one can transport gases, hydraulic fluid, liquids, and even steam.

Almost all of them are durable as they are made with high-quality materials. As a result, the threads won’t bend or get damaged due to external pressure. If you opt for the cheaper ones, there is a possibility that you won’t be able to use them for a long time and have to replace them due to that.

Garden Hose Thread vs NPT

In this section, we will discuss the threads individually. Please go through them and take notes wherever you find something meaningful.

Garden Hose thread

In short, a Garden Hose Thread goes by the name of ‘GHT.’ You have to use it on garden hoses to allow the liquid to move freely between the pipes. Moreover, you can use it on your RV’s fresh water valves, Silcock, and hose bibs. Besides, it is also compatible with residential and trailer homes.

Types

GHT consist of two types, MGHT (male version) and FGHT (female version). Keep in mind that GHT and NPT are not similar as the connections in a garden hose don’t work with NPT.

When you need a hose fitting related to water, you should go for GHT. This thread easily seals with a females coupling gasket.

Size

In the USA and Canada, this thread is used in a standard size. It is referred to as GHT in the case of a garden hose thread. When it comes to a national hose, you can call it NHR.

The threads that come with the NHR label should have 11.5 threads for every inch. This type of unique construction is done to ensure you don’t face a problem when you screw the hose straight into the fitting. Plus, it provides a good amount of tightness, making it more reliable than ever.

So, the standard size of a garden hose thread is either 3/4 or 5/8 inches. These are the hose’s internal dimensions, and for both sizes, the thread pitch should remain the same (11.5 NH).

NPT

NPT means National Pipe Thread. It is a USA standardized unit that you can use to measure the tapered threads on places like threaded pipes and even fittings. Surprisingly, threaded pipes are very powerful because they provide the best seal for pipes that use hydraulic fluids.

Types

Like the previous thread, it also comes in two types, MPT (male version) and FPT (female version). You will find the former thread on the fitting or pipe’s outside part and the latter thread located on the inside.

It is famous for plumbing and industrial tasks because of its efficient performance. Since the thread is tapered, you will notice that the male’s external diameter becomes smaller to the fitting’s end. For the female’s internal diameter, it starts to get narrow with the increase in depth.

Size

The taper’s size is 1/16 to 3/4 inches for every foot, which is measured using the diameter’s change over distance.

Some of the sizes that are used most of the time are 0.125 (1/8), 0.25 (1/4), 0.375 (3/8), 1/2 (0.5), 3/4 (0.75), 1, 1.25 (1-1/4), 1.5 (1-1/2), and 2 inches. You will find these on fittings and pipes that the USA suppliers use. If you use less than 1/8 inches size, you can easily use it to compress air.

Unfortunately, sizes greater than 2 inches are not very common among people because you have to apply additional joining approaches to get the job done.

In the past, NPT was constructed only for plumbing (water pipe), but now, it is in high demand among industrial people who have to work with hydraulic systems.

Typically, this thread is not suitable for high-pressurized tasks as they start to leak at some point. So, to overcome the problem, you have to apply a sealant or PTFE (Polytetrafluoroethylene).

You have to keep one thing in check, and that is to avoid under-tightening because this thread has its tightening requirement. If you tighten it too much, there is a possibility that the female port will crack.

Which One Is Better?

As you can see, both threads are better at particular fields, and there is no clear winner. If you love working with your garden, then you have to use a hose, right? So, a garden hose thread will perfectly fit in this aspect.

On the other hand, NPT goes well with industrial projects since it allows the pipe to transport steam, liquids, hydraulic fluid, and gases.

Conclusion

These are all about garden hose thread vs. npt. Please check your personal needs and then decide which thread is best for you.

If you are still confused, consult with a professional. Don’t forget to share this article with your loved ones.

Have a good day.

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