Understanding NPT connectors and BSP connectors: An In-Depth Guide

Estimated read time 6 min read

It is important to emphasise that the choice of connectors in industrial and plumbing fittings may significantly influence the potential and reliability of certain systems. One of the numerous kinds of connectors that is worth teasing out would be the NPT Connectors; this is one of the most widely-used kinds of connector. The NPT, which stands for National Pipe Thread, connectors are very popular due to their efficiency when it comes to making a firm joint on the pipes. Therefore, the purpose of this article is to give an adequate understanding of NPT connectors, a detailed analysis of BSP connectors, and a brief introduction to Techsol engineers in this field.

What are NPT connectors

Definition and origin

NPT connectors are defined as connectors that apply the National Pipe Thread, which is popular mainly in the United States. These connectors’ threads are of the tap type, and they have a tapering type that offers a secure connection when the male and female portions are screwed together. This makes it possible for the tapers within the threads to mean that once the connectors have been tightened, the threads sort of interlock and give a sealing point to avert leakage.

Applications of NPT connectors

NPT connectors are commonly used in a variety of applications, including:

Plumbing: NPT connectors are used in almost every home to make sure that the pipes are connected tightly and making sure that they do not leak.

Industrial systems: In the production line and industries, NPT connectors are used to join pipes handling gases, fluids, and chemicals.

HVAC systems: HVAC systems use NPT connectors to guarantee smooth circulation of fluids, and electrical wiring is incorporated into conduits.

Advantages of NPT connectors

The key advantages of NPT connectors include:

Leak-proof seal: These are designed based on the tapered threads, which provide a lock that would not allow leakage, and this is very vital in domestic and commercial use.

Strength and durability: NPT connectors are used to manage the massive pressures of the pipes and are made with high-end materials such as stainless steel and brass.

Understanding BSP connectors

Definition and origin

BSP connectors, or British Standard Pipe connectors, are another type of connector used worldwide. Nevertheless, BSP Connectors are mostly used in Europe, Australia, and numerous other territories across the globe, not being a standard in NPT connectors. BSP connectors come in two main types: FA and TA. There are two other classifications: BSPP (British Standard Pipe Parallel) and BSPT (British Standard Pipe Tapered).

The key features and characteristics of BSP and NPT threads

While both NPT and BSP connectors serve similar purposes, they have distinct differences: 

Thread angle: The angle made by the shank of NPT male threads is 60 degrees; for other male BSP threads, the angle made is 55 degrees.

Thread type: The NPT connectors use tapered threads, but the BSP connectors use BSPT threads that are tapered or the BSPP threads that are parallel.

Sealing mechanism: NPT connectors are threaded by deforming the thread, and BSP connectors use a sealing washer or gasket when the thread is parallel and use the thread deformation for tapered ones.

Applications of BSP connectors

BSP connectors are used in similar applications to NPT connectors but are more common in regions outside the United States.

Plumbing: BSP connectors are commonly applied to European domestic and commercial plumbing as well as other areas of the world.

Oil and gas: These are components used by oil and gas companies for making leak-proof joints in pipeline systems.

Hydraulic systems: They are essential components, especially in hydraulic systems where the connection of fluids requires an appropriate connector.

Advantages of BSP connectors

BSP connectors offer several benefits:

Global standard: BSP connectors are recognised across the globe and, therefore, may be preferred for international businesses.

Variety of types: It is also important to have parallel and tapered threads due to ease of usage in various occasions and areas.

Secure connections: The design of BSP connectors has been made secure, in particular with the sealing washers, thus ensuring secure connections.

Choosing between NPT and BSP connectors

When deciding between NPT and BSP connectors, several factors should be considered:

Geographical location: The NPT connectors are easier to source in the United States as compared to other countries and are also more controlled. On the other hand, BSP connectors are prevalent within Europe and some other world regions.

System requirements: More details about the system you are putting in place, such as the pressure level and the type of sealing, can influence the choice of the connector.

Compatibility: As for the connectors, they should be adjusted in a way that they will fit in with the other piping systems. 

Who are Techsol engineers

Techsol Engineers is a well-established organisation that deals with the production and sale of industrial connectors such as NPT and BSP industrial connectors. They have also established themselves as a reliable and innovative company that always presents client solutions to match the challenges faced by the clients.

Innovations and quality assurance

Their connectors are produced by employing the latest technology in manufacture, and they pass through a series of tests to conform to national and international standards. This commitment to quality assures that their connectors reliably form secure and leak-proof connections in any application.

Custom solutions

One of the most notable things about Techsol Engineers is their flexibility in terms of tailor-made solutions. If there is a specific requirement for a particular configuration of the connector to suit particular application requirements or for the connector to be manufactured from special materials, then we are readily available to offer Techsol Engineers solutions that would suit the customer’s requirements.


When deciding on the connectors to be used in industrial and plumbing fittings, it is important to distinguish between NPT connectors and BSP connectors to have a leak-free system. NPT connectors with a threaded and tapered design and the ability to use a seal are mostly used in the United States, though BSP connectors, which include connectors that meet global standards with more flexibility, are used in many areas. When in search of high-quality connectors, it would be important to consult Techsol Engineers, as they provide quality connectors, come up with more appropriate connectors, maintain high standards when it comes to quality assurance, and provide customers with solutions anytime they get stuck. 

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