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Technical Specification for Hydrojetting

At American Jetting, we are very familiar with the specifications for commercial hydrojetting. We know how to apply to proper amount of water pressure for the right size and type of pipe that is necessary to clear even the most stubborn blockages. Our equipment normally operates up to 4,000 psi depending on the specific job circumstances. More pressure than that is unnecessary. In most cases, we back off on the pressure when working with smaller diameter sewer lines or older sewer pipes. The idea is to use enough pressure to clear the pipes completely without doing any damage.

Hydro-jetting is safe for all types of pipe including iron, clay, and PVC. For those interested in the technical specifications here is a summary of the factors involved in commercial hydrojetting.

Hydrojetting involves the following factors:

  • Pipe characteristics
  • Materials used on site than go down the drain
  • Landscaping (especially mature trees)
  • Pumps
  • Nozzles
  • Water Pressure
  • Water Flow

Pipe Characteristics<.h2>

All hydrojetting jobs first involve a site inspection to determine the material of the sewer pipes, the approximate age of the sewer pipes, distance to the main city/county sewer line in the street, and the sizes and locations of the pipes that need to be cleared. Blueprints from the construction are helpful. A long cable video camera line may be sent down the pipe to identify the blockage.

Materials That Go Down the Drain

There are different nozzle jets used for the types of materials that may be the cause of the blockage.


Mature trees are a source of roots that frequently end up blocking underground sewer pipes.

Hydrojetter Pump

American Jetting has both Harben and U.S. Jetting equipment, so the correct size pump with sufficient capacity is assigned to do the job.


There are dozens of nozzle types that are useful depending of the type of materials that block the pipe and the size of the pipes. Some rotate, some have extra back-jets to thrust the nozzle down the pipe more powerfully, and others have wider or more concentrated spray streams. The nozzle selection is made by the technicians at American Jetting who have experience working with every kind of clogged drain imaginable. Sometimes more than one nozzle is used to clear and clean an underground sewer system.

Water Pressure

The amount of water pressure used depends mostly on the pipe diameter. Larger pipes need more pressure to clear them. To give an idea of how powerful this pressure is, a 2,000 psi high-pressure water stream will take paint off a truck and a 4,000 psi stream with blow stubborn blockage out of a 24” pipe. Any pressure higher than 4,000 is considered unnecessary and extremely dangerous. For example, 5,000 psi can slice a man’s arm off and damage pipes. American Jetting works with pumps that deliver up to 4,000 psi.

Water Flow

The water flow is also a factor in putting enough pressure and water force on the blockage to blow all the debris down the sewer line.

Here is a table showing the appropriate pipe sizes, water pressure, and water flow:

Pipe Size PSI Water Flow GPM
less than 4" 1,500 1.5 to 2.25
less than 6" 3,000 4
3" to 12" 2,000 12
3" to 12" 3,000 12
3" to 15" 4,000 12
3" to 24" 4,000 18

American Jetting covers the entire state of Arizona, primarily Maricopa County, including the greater Phoenix Metropolitan Area and Tucson.

American Jetting provides professional jetting services in the Arizona cities of Anthem, Avondale, Buckeye, Carefree, Cave Creek, Chandler, Citrus Park, El Mirage, Fountain Hills, Gila Bend, Gilbert, Glendale, Goodyear, Guadalupe, Litchfield Park, Mesa, New River, Paradise Valley, Peoria, Phoenix, Queen Creek, Rio Verde, Scottsdale, Sun City, Sun City West, Sun Lakes, Surprise, Tempe, Tolleson, Tucson, Wickenburg, and Youngtown.