Abstract:BSPP FITTINGS (British cylindrical pipe thread) an...
BSPP FITTINGS (British cylindrical pipe thread) and
BSPT FITTINGS (British conical pipe thread) are two main British pipe thread connection systems. The differences between them are mainly reflected in the thread shape, connection method, use and standard specifications.
First of all, BSPP FITTINGS adopts parallel thread design, that is, the thread axis is parallel to the pipe axis. This design makes installation easier. It is usually threaded into the corresponding interface and a sealing ring or gasket is used to ensure the sealing of the connection. In contrast, BSPT FITTINGS adopts a conical thread design, and the thread axis is tapered. Thread sealant is required when making connections because the tapered thread design is inherently less sealing than parallel threads.
BSPP FITTINGS are commonly used in hydraulic systems, gas transmission, water supply pipelines and other applications, and comply with British and European standards such as BS EN ISO 228-1. BSPT FITTINGS are also used for liquid and gas transmission. The standard specification is BS 21, also known as the British National Standard. The two have some overlap in application areas and geographical locations, but there are also some differences.
From the perspective of connection method, BSPP FITTINGS is easier to connect, while BSPT FITTINGS requires the use of thread sealant during connection to improve sealing. This makes BSPP FITTINGS more convenient when installing without the need for additional sealants, while BSPT FITTINGS require more attention to ensure sealing performance.
In actual selection, the requirements of the specific application need to be taken into consideration. BSPP FITTINGS is more suitable for some scenarios that require simple and convenient installation due to its parallel thread design, while BSPT FITTINGS may be more practical in some special environments, especially when thread sealant is required to increase sealing. The media, pressure, temperature of the piping system and the standards of the region are all important considerations in selection.
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