In pipes, the trap is a device that has a shape that uses bending lines to capture water to prevent exhaust gas from entering the building, while allowing waste to pass through. In oil refineries, traps are used to prevent hydrocarbons and other harmful gases from exiting through waterways.
In domestic applications, traps are usually in the form of U, S, Q, or J pipes located below or inside plumbing fixtures. The S-shaped trap is also known as S-bend . It was discovered by Alexander Cummings in 1775 but known as U-bend after the introduction of the U-shaped trap by Thomas Crapper in 1880. The new U-bend can not be jammed, so, unlike S-bend, it no need to overflow. The most common of these traps in homes is referred to as the P-trap. This is a 90 degree fit that fits on the outlet side of the U-bend, thus creating a P-like shape. This is also called a sink trap because it is installed under most of the house wash basins.
Due to its shape, the trap retains a small amount of water after the use of the fixture. The water in this trap creates a seal that prevents the exhaust gas from flowing from the exhaust pipe back to the occupied space of the building. Basically all plumbing fixtures including sinks, bathtubs and toilets must be equipped with internal or external traps.
Since this is a localized low point in the pipeline, the sink trap also tends to catch heavy objects (such as jewelry) that accidentally fall into the sink. Traps also tend to collect hair, sand, and other debris and limit the final size of the objects to be forwarded to the rest of the pipe, thereby capturing large objects. For all these reasons, most of the traps can be dismantled for cleaning or they provide some sort of cleaning feature.
When large water volumes can be disposed of through traps, a standpipe may be required to prevent impacts to other nearby traps.
Video Trap (plumbing)
Histori
The S-shaped trap is also known as S-bend . It was discovered by Alexander Cummings in 1775 but known as U-bend after the introduction of the U-shaped trap by Thomas Crapper in 1880. The new U-bend can not be jammed, so, unlike S-bend, it no need to overflow.
Once found, although simple and fairly reliable, widespread use in the slow waste comes. In the UK, the pipeline needed to support the full use of traps was introduced only when the Thames River, which used as an open sewer forced legislators to pass laws in the 1860s to install a closed sewer so as to avoid the unbearable smell reaching the Houses of Parliament in nearby. By 2017, only about two-thirds of the world's population has access to traps, despite the evidence that a good waste disposal system significantly improves economic productivity in the countries that employ them.
Maps Trap (plumbing)
Ventilation and assistive devices
Maintaining a water seal is essential for trap operations; traps can and can be dried, and bad ventilation can suck or excrete water from traps. This is usually avoided by emptying the sewer downstream of the trap; by being released into the atmosphere outside the building, the sewer never operates at pressures much higher or lower than atmospheric pressure. Plumbing codes usually provide strict limits on how far the traps can be found from the closest pile of vents .
When ventilation can not be provided, the code may allow the use of air-in valves instead. This device avoids negative pressure on the drain pipe by draining air into the pipeline (behind the trap). "Chicago Loop" is another alternative.
When a trap is installed on equipment that is not routinely used, evaporation of water in the trap must eventually be considered. In this case, the primary trap can be installed; this is a device that automatically recharge traps with water to keep their water seal.
Traps received
In some areas of the United States, the "S" trap is no longer accepted by plumbing or even illegal, as it tends to suck dry even when released properly. It is often possible to know whether a household is using an S-or U curve by checking for the presence of an outflow pipe outlet. All it takes is a P-trap with proper ventilation. A certain drum-style trap is also prohibited or prohibited.
See also
Note
External links
Source of the article : Wikipedia
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