Hot Tap Water Main Connection

A cut in valve could be used to install an in line shutoff valve on the main.

Hot tap water main connection.

A tap connection controls the volume and pressure of water from the city main to the house. A hot tap connection can be made on a pipeline only where the parent pipe material is in good condition. A more common name for the pressure connection is a hot tap and it is generally used for a smaller valve which feeds off a larger main. Other conditions to evaluate include the location of nearby valves for emergency isolation in the event of an accident the desired.

Below are examples of common tapping methods. 69 91 and 96 hot taps. Venting or draining can take place when the pilot drill penetrates the pipe wall except when a nitrogen purge is used. The process is also used to drain off pressurized casing fluids and add test points or.

Modification between the two hot tap locations are completed using cutting and welding. It may seem as though dry taps would be the method of choice but shutting the main down can cause water loss increased potential for contamination and lack of. It could also be used where a full size tee or cross needs to be installed in the mainline or where a the main tee is very large. Hot tapping or pressure tapping is the method of making a connection to existing piping or pressure vessels without the interrupting or emptying of that section of pipe or vessel.

This can be installation of any valve or a pipe piece. Fluid is again filled between the two hot tap locations ensuring the original pressure is maintained. A water main tap is the valve used to connect a homeowner s water line to the city water main. In many cases increasing the size of a tap will improve upon the amounts of water pressure in your home.

Unlike a tap connection which is drilled into the nyc water main a wet connection is actually a core drill. Dry taps are generally t connections installed in the main or lateral. Determine physical conditions of the existing line. Venting evacuates the air or product out of the tapping adapter for safety reasons.

This means that drilling the main water line like someone would drill a piece of wood for instance cannot be done. You add a valve and test the connection under pressure with a hydrostatic pump. Wet taps or hot taps which use sleeves or saddles are performed when the main or lateral is under pressure. Fluid flow is started again from the main pipe and by pass arrangement and hot tapping machine is.

You place a hot tap service saddle or sleeve onto the line. Hot tapping is a means of adding a branch connection to an existing transmission main without a shutdown of service. Make arrangements to safely vent hazardous products out of the hot tap machine bleed connection at the start of the tap. Then you place the hot tap machine onto the value through a water tight packing gland open the valve and lower the cutter and retention pilot down until it touches the pipe.