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A coupling nut A coupling nut and its orthographic view. A coupling nut, also known as extension nut, is a threaded fastener for joining two male threads, most commonly a threaded rod, [1] [2] but also pipes. [3] The outside of the fastener is usually hexagonal so a wrench can hold it.
The fitting is known as a reducing coupling, reducer, or adapter if their sizes differ. There are two types of collars: "regular" and "slip". A regular coupling has a small ridge or stops internally to prevent the over-insertion of a pipe and, thus, under-insertion of the other pipe segment (which would result in an unreliable connection).
Hydraulic Chain Pipe Wrench – A hydraulic driven wrench which will safely remove threaded pipe from other threaded coupling, valve, etc. while the other devices listed here are for loosening (breaking) nuts. Torque values available vary with size but range up to approximately 75,000 FT-LB. [5]
Examples of adapters include one end BSP threaded with the other NPT threaded, and one end threaded with the other a plain socket for brazing. A coupling whose ends use the same connection method but are of different sizes is called a reducing coupling or reducer. An example is a 3/4" NPT to 1/2" NPT coupling.
A type of coupling used by the CFA, it is used mainly on the Australian 64 mm hose. It provides a very secure coupling - the threading of the coupling is repeated 3 times. It is non-hermaphrodite. Check valve See Backflow preventer Cistern Underground water storage tank that is intended for firefighting use in areas with inadequate water supply.
Two years after finally being identified, the "Boy in the Box" case continues to haunt Philadelphia. The slain body of Joseph Augustus Zarelli, 4, was discovered in February 1957 in Philadelphia's ...
The couple took most of Justin’s original artwork with them Jan. 7 as smoke and ember clouded the sky. Left behind, though, was so much more, like antiques belonging to Toler Carr’s mother.
11. Cut down on the sweets and junk food. Don't cut the nutritious stuff if you have to buy less food. You always need dinner, you can save money by making dessert a special thing.
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