Is BSP the same as BSPP?
BSP thread stands for British Standard Pipe and is common in Europe, Australia and the commonwealth countries. BSPP is also called G thread, which is BSP parallel thread. To form a seal or connection by 60 cone or washer or O-ring on the boss. And BSPT is a taper thread, it creates a seal by thread.
What does BSPP stand for?
British Standard Parallel Pipe
BSPP (British Standard Parallel Pipe) is most popular in the UK, Europe, Asia, Australia, New Zealand and South Africa. It is a parallel thread fitting that uses a bonded seal ring to do the sealing.
Is BSPP compatible with NPT?
NPT and BSP threads are generally not compatible due to the differences in their thread forms. NPT and BSP thread pitches (threads per inch, TPI) are listed below. You can use 1/2″ and 3/4″ NPT and BSP fittings together, but all others will be incompatible and will therefore leak.
Are BSPT and BSPP interchangeable?
The BSPT (tapered) male will mate with a BSPT (tapered) female, or a BSPP (parallel) female. The BSPT connector is similar to, but not interchangeable with, the NPTF connector. The thread pitch is different in most cases, the thread angle is 55° instead of the 60° angle found on NPTF threads.
Which is better NPT or BSP?
The difference between NPT vs. BSP threads has more to do with where you live than their applications. Both NPT and BSP are pipe thread standards for screw threads used on pipes and pipe fittings to seal pipes. Secondly, the NPT angle of the thread is 60 degrees and the BSP angle is 55 degrees.
What are the dimensions of a BSPP thread?
BSPP Thread Dimensions Calculator shows dimensions, tolerances and designation for fastening pipe threads for thread sizes from 1/16 to 6 according to ISO 228 – 1 standard. The thread form follows the British Standard Whitworth thread. Some important notes from the ISO 228 – 1 standard:
Can a male BSPT thread into a female BSPP?
For tapered BSP threads, a seal is acquired via thread wedging with additional support from thread dope or Teflon® tape. It is possible for a male BSPT (tapered) to thread into a female BSPP (parallel), so long as the female thread is fixed and not swivel (this is because of the recessed cone seat on the BSPP end).
What’s the difference between a NPT and a BSPT?
NOTE: It is a common mistake to identify a BSPT (tapered) as an NPT. Remember that NPT threads have a 60° thread flank angle, and BSPT has a 55° angle (this can be verified with a thread gauge). Although BSP is a foreign thread, it isn’t metric. This is why it comes in imperial sizes: 1/8, 1/4, 1/2, 3/4, and so on.
How big is a BSP drill in inches?
BSPP / BSPT SIZE MAJOR (EXT) MINOR (INT) TAP DRILL 33/4″ 106.680 103.722 104.00 4″ 113.030 110.072 110.50 41/2″ 125.730 122.772 123.00 5″ 138.430 135.472 136.00
