Search results
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.
Gauge Length: Because of the taper angle, the diameters (major, minor, and pitch) change as we move along the thread’s axis. The gauge length is an arbitrary distance from the thread’s end at which the measurements of diameters are made.
BSPP G 1/4 : Brith Pipe (BSP) Thread Dimensions and Tolerances. All the relevant data for this tread in one spot.
G-Series pipe thread chart (British standard pipe parallel was BSPP & BSPF) and PF-Series pipe thread chart (Japanese pipe parallel).
You must find the I.D. to determine the threads per inch count for BSPT fittings. Simply obtain a caliper reading from inside the bore of the fitting. You can cross-reference the bore size on the following chart with thread pitch and threads per inch to find your desired size and its related specs.
The most common G 1/4″ threads at WIKA are surely the G 1/4 in accordance with EN 837 or DIN 3852-E. But in addition there are many other pressure connections which are all specified as G 1/4″. For example G 1/4 Ermeto and G 1/4 DIN 3852-A, just to name two.
For R-series threads, the major, pitch, and minor diameters are measured at the gauge plane. For external threads, this plane is located at a distance equal to the nominal gauge length from the small end of the thread; while for internal threads, it is located at a distance equal to half the pitch behind the face of the threaded part.
