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A sump pump, either 1/3 or 1/2 horsepower (250 or 370 W), operates on 115 volts, plugs into a standard receptacle. Pipe connections are either 1.25" or 1.5", National Pipe Thread (NPT), and a level control to allow for automatic operation;
A discharge of wastewater causes the AAV to open, releasing the vacuum and allowing air to enter the plumbing vent pipe for proper pressure equalization. Since AAVs will only operate under negative pressure situations, they are not suitable for all venting applications, such as venting a sump, where positive pressures are created when the sump ...
In the United States, NFPA 1901 requires engines to have suction hose that matches the engine's pump rating. [12] For example, an engine with a 1,000-US-gallon (3,800 L) per minute pump is required to carry 5-inch (13 cm) or larger hose, [1]: 181 while a wildland fire engine will typically carry 2-to-2.5-inch (5.1 to 6.4 cm) hard suction hose.
A drain cover is a cover with holes (e.g. a manhole) or a grating used to cover a drain, to prevent unwanted entry of foreign objects, or injury to people or animals. It allows drainage of liquids but prevents entry from large solid objects, and thus acts as a coarse filter. A sink drain cover is a drain cover used to cover the sink drain.
The US standard was defined by NFPA 1963, "Standard for Fire Hose Connections", [2] then later by ANSI-ASME B1.20.7, [3] which specifies 1 + 1 ⁄ 16 inches (27 mm) diameter straight (non-tapered) thread with a pitch of 11.5 threads per inch (TPI). The female thread is abbreviated FHT (for "female hose thread"), and the male part is abbreviated ...
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