Ips vs Npt : A Comprehensive Comparison

While ips vs npt connections are frequently viewed as interchangeable, they’re not. There are a few similarities between them. But, based on the name alone, it’s easy to identify the difference.

One of the biggest issues is the one that tries to resolve the controversy of IPS as opposed to NPT threads. What is the distinction? What’s the difference? IPS size system has straight threads, while NPT features an angled thread. Therefore, their functions are slightly different for specific spaces, even though they appear similar.

In this blog in this article, we’ll simplify everything so that you can get rid of the confusion one-by-one.

Ips vs Npt

What Is An IPS Pipe Connection?

Its IPS connection The IPS connection(Iron pipe size) was first introduced in the 18th century. This means that it’s an older method. The size of iron pipe, also known as IPS is a term used to describe the thickness of the iron pipe straight thread walls.

At first, IPS pipe was used to iron pipe size made from wrought. Even though the standard of connection is outdated, it’s used in steel, iron or brass as well as pvc plumbing parts components.

Understanding the crucial differences can indeed be complicated for DIYers. The reason is because of the names structures. There are a lot of threads for MIPS or FIPS for plumbing pipes. It is an ips thread dimensions derived by the IPS system.

Many people believe that they are using the IPS connection is just used for plumbing fittings with threaded connections. It’s therefore best for pipes made of iron (as they’re threaded). However, that’s not always the situation. There are a variety of PVCs using this type of connection. What is the question, then, is why?

You can see that as you can see, the IPS standard is focused on the dimensions of the outside of the pipe. It’s better suited to durable connection to the home, and is mainly used for underground pipes. The iron pipe size and shape of the exterior of regular PVC is comparable to the size of steel pipes.

Where To Use The Ips Pipe Connection?

It is possible to use the IPS pipe connection to NPT pipes. The most common method for threading an IPS pipe is by finding NPT pipes. IPS vs npt, no whatever the name and both fittings will work together. Where can you use IPS fittings?

To understand this one, it’s necessary to examine its distinctive properties of performance. It turns out that the conductivity of thermal energy and power consumption rates for IPS pipes are very low. This is why they’re ideal to be used in hydronic heating systems.

Utilizing using an IPS pipe thread within hot water systems quickly reduces heat loss. Furthermore, IPS pipes offer extended lifespan of service. This is essential for these connections.

What Is An NPT Pipe Connection?

National Pipe Tapered Thread is the most complete form of NPT. Also known as ASME/ANSI B1.20.1 Pipe threads. Similar to other metrics, it is an exclusive measure of pipe threads in the USA.

The type of connection that is used has been used extensively across the US for more than 100 years. This means NPT pipes are easily accessible. In addition NPT pipes are available in various iron pipe size and shapes.

As of now, it’s easy to discern that NPT is an extremely popular and well-known technology. The reason is that the NPT connection is a simple installation. The connection is simple enough that you can connect them with no sealing tubes or flaring or O-rings.

But, NPT pipes are initially intended for use in waterline plumbing. However, they’re not suitable to hydraulic system. Yet, plenty of plumbers are still using them to do waterline plumbing tasks install hydraulic systems. However, there is always an additional danger of leaks from the pipe that is used for water.

Ips vs Npt : A Comprehensive Comparison

Where To Use The Npt Pipe Connection?

Connections with NPT are a way to seal pipes that are used for the fluid and gas transfers. However, NPT connections can’t handle high pressures in hydraulic systems. However, you can use these connections. All you have to do is choose an informed decision.

Locating brass NPT connections and pipes isn’t difficult because they’re readily accessible. If you want connections with low pressure the best choice is brass or iron NPT connectors. For high-pressure connections, go with stainless steel or carbon pipes.

The biggest flaw with NPT pipes is their problem of leakage under high pressures. The reason for this? The reason is that these pipes depend on the deformation of threads. The connection therefore has the design of a metal-to-metal bonding. Because of this, NPT pipes are ideal for single-time assemblies.

What is that? NPT connections work best in areas where you don’t have to build and take apart the connection all the time. Why? If you take apart and reassemble NPT connections frequently and the threads deform fast. This means there’ll be loss. It’s not an ideal picture.

IPS Vs NPT: Comparison Chart

Let’s take a take a look at the main difference between the two system in a quick glance:

Thread TypeStraightTapered
MeasurementBased on the pipe wall thickness and the inside diameter of the pipeBased on a thread per inch, and the outside diameter
UsageHydraulic water system agricultural sector indoor/outdoor faucetPower plants gas station oil stations manufacturing industry natural gas lines chemical supply compressed air
SealingNo need to use PTFE tapeYou need PTFE tape for sealing
AdvantagesPVC pipe and fittings utilize IPS standards to create a watertight seal. This fitting increases the longevity of the system nominal Pipe Size (NPS) is used interchangeably with IPS sizing    Readily available widely known and used offers simple assembly

What Are The Differences Between Ips And Npt Pipe Connection?

It can be difficult when it comes to understanding the main distinction between NPT and IPS connections. If you are aware of the distinction, you’ll be able to quickly decide which you want to use. This article will go over these in greater detail:


The angle between the taper’s angle and the center of connections remains identical (1deg 47’24 ”). With regards to the features, both pipes have the same characteristics. This is why the distinction can be confusing. You can even measure pitch of the threads in threads per inch, also known as TPI. There’s no differences in terms of characteristics between two.

When it comes to the characteristics of each In terms of characteristics, they might not differ significantly. However, the measurement dimensions are distinct between the two pipes. It is possible to measure IPS pipes using the wall thickness as well as their inner dimensions. For NPT pipes, measure threads per inch as well as the dimensions outside.

Ips vs Npt : A Comprehensive Comparison


The IPS connectors are easily accessible in a variety of sizes, such as 1-inches and 1/2-inches and 1/4-inches. To use IPS connections, it is necessary to determine the size of your pipe. This is because IPS thread sizes have a basic threading system. The internal threading holds all the threaded fittings together.

This is not the case with NPT pipes. To determine the size of NPT pipes, it is necessary be aware of the inner and outside diameters. The most common sizes for these pipes include 1/8, 1/4 3/8 1/2, 3/4 1 1, 1/4, 1/2 as well as 2 inches. These pipes are used most often in fittings and connections used by us.

Sizes smaller than 1/8 inches can be employed for the supply of compressed air. The smaller sizes are not common, mostly because you can utilize the joining process with bigger pipes.

For you to better comprehend We have provided the sizing chart that applies to both systems of sizing:

Sizing for IPS (Iron Pipe Straight)

Thread/SizeODM (Outside Diameter for Male)TPI (Thermoplastic Isolator)
1 ½-inches1.87811.5

Sizing for NPT (National Pipe Tapered)

Thread/SizeODM (Outside Diameter for Male)TPI (Thermoplastic Isolator)
1 ½-inches1.90011.5

If you take a close look at the sizing table, will see that the TPI of both systems is the same. But, the ODM differs slightly. While the distinction is not significant in terms of numbers, this is the primary motive NPT and IPS aren’t working together.

Pipe Connectors

One of the major differences between these two kinds of connectors, one crucial element to take into consideration is the type of connectors for pipes. Primarily the connection can be incredibly difficult to understand PVC pipe thread.

To comprehend the differences it is necessary to know the specifications of male and female. What do they mean?

Male connectors resemble bolts since they have threading on the exterior. In contrast female connectors look like the shape of a nut due to their threading inside.

It is essential to choose the right connector type for any pipe. If both IPS as well as NPT pipes feature male and female threads How do they differentiate from one another? That’s easy. Take a look at the threading style. IPS pipes feature a straight thread. This makes it easier to attach the fitting as washers.

However, NPT comes with tapered thread. The purpose of the thread is to secure the threads. To do this, you must put on pipe tape on the pipes. In general, the tapered threads will stretch the thread, forming the seal.

It’s the reason NPT connections are only once-off connections. In contrast you can delete or set up IPS connections as often as you want.

Leakage Issues

There is no obvious problems with leakage with IPS connections. The IPS pipe can be cut into half and then welded. It’s the inside dimension primary system connection that is crucial. Furthermore the straight threading structure makes sure there’s zero loss of air.

However, NPT fittings are known to leak. Before assembling NPT fittings, it is necessary to connect an adhesive. Incorrect tightening (for male and female threading of ports) or under-tightening (male ports) may cause trouble. Be cautious when assembling.

It’s not necessary to worry about issues like this due to IPS connections.

Ips vs Npt : A Comprehensive Comparison

Ips Or Npt Which One To Choose?

Are you still a bit puzzled Are you? Well, we can understand. If you are making a purchase one must be aware that the product you purchase must meet the requirements for what you need it to do. There’s no question that this IPS device is perfect for home and business applications.

The two NPT systems can be found in a wide range. This leads to confusion whether the shower head is NPT or an IPS? A majority of shower heads are in the US utilize NPT. NPT system. This is because NPT is the most modern form of that is used, while IPS is more outdated.

It still holds the appeal of a variety of plumbing systems. Particularly it is the IPS method is the best choice for hydraulic water connections. It’s the perfect match for planned 40 or 80 iron pipes for plumbing. 80 pipes are indeed used extensively underground piping systems in both industrial and agricultural industries. Additionally, IPS systems guarantee a steady connection to household faucets as well as hot water supply systems.

It doesn’t mean that NPT isn’t available because it’s modern technology and readily available. Threads that are tapered create a secure seal for carrying fluids gas, steam, or other liquids across the pipeline. This is why gas, oil manufacturing, chemical and power plant utilize NPT.

They are both a good choice to connect water pipes in your home. The best choice would be the moment you decide to use these in a sector or a business.


It’s all that’s needed you need to know about IPS and NPT system. You can now discern what the main difference is between these two systems. Sure, initially it appears that they look identical. However, some distinct features distinguish them from each the other.


Is IPS compatible with NPT?

IPS is left of the column, and NPST is on the right. It is evident that the both diameters are similar and the thread-per-inch (TMP) is comparable. Can we make use of liquid seal to screw the ips threads or NPT to fit together using the same properties? It’s not possible.

What does IPS stand for pipe?

Does Integrated Services a specialized entity or an organization? PIX refers to the sizes of iron pipes as well as a system employed by all pipes about 1900. Presently, ABS or PVC pipe size is utilized to determine the size of pipes in America.

What does ips npt mean in pipe?

Steel Pipe Size or ips threads System is developed to estimate the pipe’s diameter when the piping system has an internal diameter of. It was extensively used in the latter part of the nineteenth century to the early 20th century and is still used across a wide range of sectors, including large PVC pipe producers.

What is meant by IPS thread?

Straight stainless steel pipe is the standard threading type. Its nominal dimensions are unclear since the name is a reference to the diameter of the cylinder which reaches its inner diameter rather than expanding beyond.

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