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Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures. [1] " Nominal" refers to pipe in non-specific terms and identifies the diameter of the hole with a non-dimensional number (for example – 2-inch nominal steel pipe" consists of many varieties of steel pipe with the only criterion being a 2.375-inch (60.3 mm) outside ...
Agricultural woven wire is identifiable by wire "knots" wrapped around each intersecting wire. Mesh wire material is spot welded at each junction. Woven wire and mesh wire fences are also called square wire, box wire, page wire, sheep fence, or hog fence in the United States, sheep netting or pig netting in Britain, and ringlock in Australia.
The iron pipe size standard came into being early in the 19th century and remained in effect until after World War II. The IPS system was primarily used in the United States and the United Kingdom. In the 1920s, the Copper Tube Size (CTS) standard was combined with the IPS standard.
A reducer reduces the pipe size from a larger to a smaller bore (inner diameter). Alternatively, reducer may refer to any fitting which causes a change in pipe diameter. [ 15 ] This change may be intended to meet hydraulic flow requirements of the system or adapt to existing piping of a different size.
For pipe sizes of NPS 14 inch (DN 350) and greater the NPS size is the actual diameter in inches and the DN size is equal to NPS times 25 (not 25.4) rounded to a convenient multiple of 50. For example, NPS 14 has an OD of 14 inches or 355.60 millimetres, and is equivalent to DN 350.
He established this as a standard scale, or in German, Normalmensur, with the additional stipulation that the internal diameter be 155.5 mm (6.12 in) at 8′ C (the lowest note of the modern organ compass) and the mouth width one-quarter of the circumference of such a pipe.
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Treated water is transferred using water pipes (usually underground). Water storage facilities such as reservoirs, water tanks, or water towers. Smaller water systems may store the water in cisterns or pressure vessels. Tall buildings may also need to store water locally in pressure vessels in order for the water to reach the upper floors.
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