Wet Tapping is a method of making a branch connection to a water or sewer main while the existing pipeline is running live & under working pressure. This tapping method employs a pressure-contained tapping machine, a full-port tapping valve and a pressure-contained tapping sleeve attached (bolted) to the existing pipeline. Wet taps use a tapping sleeve that is bolted to the existing pipeline to make a branch connection. Wet tapping is used on sewer or water systems. Wet taps are performed on materials that cannot be welded.
Dust collectors that use liquid are commonly known as wet scrubbers dust collectors. In these systems, the scrubbing liquid usually water comes into contact with a gas stream containing dust particles. The greater the contact of the gas and liquid streams, the higher the dust removal efficiency. There is a large variety of wet scrubbers dust collectors however, all have of three basic operations, gas-humidification, gas-liquid contact and gas-liquid separation. The cleaned gases are normally passed through a mist eliminator to remove water droplets from the gas stream. The dirty water from the scrubber system is either cleaned and discharged or recycled to the scrubber. Dust is removed from the scrubber in a clarification unit or a drag chain tank. In both systems solid material settles on the bottom of the tank. A drag chain system removes the sludge and deposits in into a dumpster or stockpile.
Wetting agents are chemical substance that increases the spreading and penetrating properties of a liquid by lowering its surface tension. It is a substance that reduces the surface tension of a liquid, causing the liquid to spread across or penetrate more easily the surface.