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At its annual convention at Dallas, TX, the NFPA formally adopted a standard with 2 + 1 ⁄ 2-inch hose with 7.5 threads per inch as the primary standard, with additional sizes of 3 and 3.5 inches (each with 6 threads per inch) and a 4.5 inch coupling with 4 threads per inch, with the fire hydrant standard specifying one 4.5 inch port and two 2 ...
Side view of a 1.5 to 2.5 inches (38 to 64 mm) adapter. National Hose thread (NH), also known as National Standard Thread (NST). It is the most common type of fire hose coupling used in the United States. The male and female straight (non-tapered) threads screw together and the connection is sealed with a gasket.
Supply lines, used to supply firefighting apparatus with water, are frequently found in 3 + 1 ⁄ 2, 4, 4 + 1 ⁄ 2, 5 and 6-inch diameters. There are several systems available for repairing holes in fire hoses, the most common being the Stenor Merlin, which offer patching materials for Type 1, 2, and 3 hoses. The patches come in two different ...
This fitting is used with 1 ⁄ 2-inch, 5 ⁄ 8-inch, and 3 ⁄ 4-inch hoses. [4] [5] In other countries, a British Standard Pipe (BSP) thread is used, which is 3 ⁄ 4 inch (19 mm) and 14 TPI (male part outside diameter is 26.441 mm or 1.04 in). The GHT and BSP standards are not compatible, and attempting to connect a GHT hose to a BSP fitting ...
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It includes an 8-inch chef knife, an 8-inch bread knife, a 7-inch santoku knife, a 5-inch utility knife, a 3.5-inch paring knife, six steak knives, kitchen shears, a sharpening steel and a ...