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The half-angle (between the taper surface and the axis of the pipe) is arctan(1 ⁄ 32) ≈ 1.7899° ≈ 1° 47′. The standard for Nominal Pipe Size (often abbreviated NPS, which should not be confused with the abbreviation NPS for the straight thread form standard) is loosely related to the inside diameter of Schedule 40 series of sizes.
Moderate vacuum pressure readings can be ambiguous without the proper context, as they may represent absolute pressure or gauge pressure without a negative sign. Thus a vacuum of 26 inHg gauge is equivalent to an absolute pressure of 4 inHg, calculated as 30 inHg (typical atmospheric pressure) − 26 inHg (gauge pressure).
In SI units, 1 psi is approximately 6,895 pascals. The pound per square inch absolute (psia) is used to make it clear that the pressure is relative to a vacuum rather than the ambient atmospheric pressure. Since atmospheric pressure at sea level is around 14.7 psi (101 kilopascals), this will be added to any pressure reading made in air at sea ...
Ashcroft was born in London on 27 November 1938, and migrated to New Zealand in 1947. [3] He was educated at Hutt Valley High School, and completed his undergraduate studies at Victoria University College, [3] earning a Bachelor of Science degree, in 1958.
Acoustic Hymns Vol 1 is the sixth studio album by English singer and musician Richard Ashcroft. The album was released on 29 October 2021 through Righteous Phonographic Association and BMG Rights Management. Ashcroft's longtime collaborator Chris Potter returned for production duties after not being involved on the previous album Natural Rebel.
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