BSP consists of. two types of threads - BSPT (British Standard Pipe Taper) and BSPP (British Standard Pipe. Parallel). BSPT threads have a slight taper similar to NPT. BSPP threads are straight (parallel) threads. and have the same thread angle, shape and threads per inch (pitch) as BSPT threads.
The movie the Exorcist was based on a book of the same name by William Peter Blatty. The book is based on the real-life attempt of a priest to exorcise a demon from a young boâ¦y (the boy was around the same age Reagan was in the movie).
By Amy Garland. The exorcism of 1949 -- made famous by the 1971 bestseller by William Peter Blatty, The Exorcist, and the 1973 horror film by the same name -- has become part of Saint Louis University legend. Here are the questions most frequently asked about the exorcism.