What is the difference between 1/8 BSP and 1/8 NPT?
What is the difference between 1/8 BSP and 1/8 NPT?
The difference between NPT vs. With NPT, the peaks and valleys of the threads are flat. In BSP, they are rounded. Secondly, the NPT angle of the thread is 60 degrees and the BSP angle is 55 degrees.
What size is a BSP thread?
British Standard Pipe Thread (BSPT)
| BSP Thread Size | Outside Diameter mm / inch | TPI |
|---|---|---|
| 3/8 Inch BSP | 16.66 mm / 0.656″ | 19 |
| 1/2 Inch BSP | 20.99 mm / 0.825″ | 14 |
| 5/8 Inch BSP | 22.99 mm / 0.902″ | 14 |
| 3/4 Inch BSP | 26.44 mm / 1.041″ | 14 |
What is a BSP fitting?
British Standard Pipe (BSP) is a set of technical standards for screw threads that has been adopted internationally for interconnecting and sealing pipes and fittings by mating an external (male) thread with an internal (female) thread.
Does BSP fit BSPT?
Screwing a BSPP into a BSPT is not recommended. All other mixing and matching of threads is technically cross-threading (although it may “appear” to fasten correctly)…
Can you screw BSP into NPT?
NPT/NPS and BSP threads are not compatible due to the differences in their thread forms, and not just the fact that most sizes have a different pitch.
How do I know my BSP thread size?
To find the thread size:
- 1) Measure the O.D (outer diameter) of the BSP thread.
- 2) Take the O.D measurement (in inches) and subtract 1/4 inch (. 25”).
- 1) Multiply 3.5 by 4 to get 14. This is the number of threads per inch.
- 2) Combine the thread size with the number of threads per inch and refer to.
How do you identify BSP fittings?
How to Measure Your BSP Fittings
- Measure the outer diameter (OD) of the thread (in inches)
- Then subtract 25% from this (¼ inch)
- You’ll then need to make sure it is a BSP fitting so by counting the threads on your coupling, perhaps only just over ¼”, you can just multiply this by four to find the threads per inch.
What size is a 1/8 BSP thread?
If Measuring the Outside of a Male BSP Thread (called Actual Major Diameter) If it is 9.70mm External Diameter — then the actual thread size is called a 1/8″ BSP Thread
What does BSP mean in pipe size?
British Standard Pipe Thread. For example a 3/4 inch BSP thread actually measures more like 1 inch with a ruler. The size was originally based on the inner diameter measured in inches of a steel tube for which the thread was intended. This often causes confusion, as people think the size refers to the outside diameter of the male thread.
What are the different sizes of BSP connectors?
1/4 Inch BSP – Compressed air connectors. 3/8 Inch BSP – Central heating oil line connectors, some European toilet cistern fill valves (not common in UK). 1/2 Inch BSP – Bathroom basin taps and kitchen sink taps, radiator connections, shower hoses, old outside tap outlets, toilet cistern fill / float valves.
What is the size of BSPP / BSPT TPI?
BSPP / BSPT SIZE TPI MAJOR (EXT) MINOR (INT) TAP DRILL 5/8″ 14 22.911 20.587 20.75 3/4″ 14 26.441 24.117 24.50 7/8″ 14 30.201 27.877 28.00 1″ 11 33.249 31.770 30.50
