BSPP, BSPT, R, and Rc threads are distinct types of threaded connections, each vital in industrial and plumbing applications. Knowing the unique features and differences of these threads is essential for choosing the appropriate connection type for specific uses. Below are the key distinctions between BSPP, BSPT, R, and Rc threads.
What’s BSPP Thread?
BSPP thread is British Standard Pipe Parallel, also known as G thread. It is a parallel thread, the shape of the thread is straight and the pitch is equal. BSPP threads are commonly used to join fittings and piping systems. BSPP thread meet ISO 228-1 standard, and has a 55 degree angle.
BSPP Thread Chart
What’s BSPT Thread?
BSPT thread is British Standard Pipe Taper, also known as R thread. It is a tapered thread, the standard thread type often used for pipe connections and seals.
BSPT thread comply with ISO 7-1 standsar. BSPT is similar to NPT, but has several key differences. The angle of the BSPT thread flank is 55 degree instead of 60 degrees for NPT. Another key difference is that for many BSPT pipe sizes, the thread pitch is different from NPT. Therefore, NPT male threads will sometimes fit into BSPT fittings and vice versa, but they will not seal.
BSPT Thread Chart
R and Rc Thread
R thread is also known as BSPT thread. It is a BSP with a tapered thread line and uneven pitch. The R thread is usually sealed with a sealant or lubricant and is suitable for low-pressure liquid and gas transmission systems. It is widely used in water pipe system, gas pipeline, air compression system and industrial equipment and other fields.
Rc thread is BSPT female thread. It is an internally threaded version of the R thread and is also a tapered thread that accepts the male threaded connection of the R thread. Rc threads are usually used inside pipe fittings to receive external threaded connections. Similar to the R thread, the Rc thread is also suitable for low pressure liquid and gas transmission systems.
The design and dimensions of R and Rc threads vary according to specific standards and codes. When selecting and using R and Rc threads, it is necessary to ensure compliance with the corresponding standards, and to select according to specific application requirements and pressure conditions.
Conclusion
Understanding the distinct characteristics of BSPP, BSPT, R, and Rc thread types is vital for ensuring a secure and efficient piping system. Each type offers unique features and is suitable for specific applications. Choosing the correct thread type is crucial for the safety and reliability of your connections. By comprehensively grasping the differences between these thread types, you can make informed decisions that cater to your specific requirements, enhancing the overall performance of your system. Should you have any further inquiries or need assistance, please don’t hesitate contact us!
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