Designed to prevent sewer gas from passing back into your house, what is the name for the U-shaped pipe that connects below sink drains?
Trap (plumbing) Trap (plumbing) In plumbing, a trap is a device shaped with a bending pipe path to retain fluid to prevent sewer gases from entering buildings while allowing waste to pass through. In oil refineries, traps are used to prevent hydrocarbons and other dangerous gases from escaping through drains. In domestic applications, traps are typically U, S, Q, or J-shaped pipe located below or within a plumbing fixture. An S-shaped trap is also known as an S-bend. It was invented by Alexander Cummings in 1775 but became known as the U-bend following the introduction of the U-shaped trap by Thomas Crapper
Sewer gas destructor lamp flame generated by burning town gas, sewer gases were drawn from the sewer below and discharged above the heads of passers-by to dissipate odours. The flame in the lamp does not actually generate sufficient thermal energy to combust any of the odour compounds in the air. JE Webb addressed a number of problems of the lamps with further patents. His patent GB189408193, approved 2-March-1895, stated: It has also been found that when the gases are drawn out from the sewer by the burning of ordinary gas a sudden flushing of the sewer might prevent any sewer gas from escaping, and