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Davidson Water News
December 2016
2016 Newsletter

Forms and Typicals


To better facilitate those testing and installing backflow prevention devices, we have forms and typicals available for downloading. Forms are available as .pdf documents. Typicals are available as a .pdf as well as being available in AutoCAD .dwg format, in the event the typical needs to be included on a engineering plan or specification sheet.

Backflow Forms
Backflow Preventer Test Form.pdf
Tester Information Form.pdf
Backflow Preventer Application.pdf


Backflow Typicals (AutoCAD Drawing Format)
Vault Coupling.dwg
Reduced Pressure Principle (RP) 3/4 in. through 2 in. Commercial.dwg
Reduced Pressure Principle (RP) 3/4 in. through 2 in. Tandem Above Ground.dwg
Reduced Pressure Principle (RP) 3/4 in. through 1-1/2 in. Lawn Irrigation.dwg
Reduced Pressure Principle (RP) 3 in. through 10 in. Above Ground.dwg
Offsets and Restraints.dwg
Fireline Connection 3 in. through 10 in. Above Ground.dwg
Fireline Connection 3 in. through 10 in..dwg
Double Check Valve (DC) 3/4 in. through 2 in. Below Ground Traffic.dwg
Double Check Valve (DC) 3/4 in. through 2 in. Below Ground Non-Traffic.dwg
Double Check Valve (DC) 3/4 in. through 2 in. Above Ground.dwg
Double Check Valve (DC) 3 in. through 10 in. Below Ground Vault.dwg
Double Check Valve (DC) 3 in. through 10 in. Above Ground.dwg
Double Check Detector (DC) 3 in. through 10 in. Above Ground.dwg
Above Ground Enclosure 3/4 in. through 1 in..dwg
Above Ground Enclosure 1-1/2 in. through 2 in..dwg


Backflow Typicals (Adobe PDF Format)
Vault Coupling.pdf
Reduced Pressure Principle (RP) 3/4 in. through 2 in. Commercial.pdf
Reduced Pressure Principle (RP) 3/4 in. through 2 in. Tandem Above Ground.pdf
Reduced Pressure Principle (RP) 3/4 in. through 1-1/2 in. Lawn Irrigation.pdf
Reduced Pressure Principle (RP) 3 in. through 10 in. Above Ground.pdf
Offsets and Restraints.pdf
Fireline Connection 3 in. through 10 in. Above Ground.pdf
Fireline Connection 3 in. through 10 in..pdf
Double Check Valve (DC) 3/4 in. through 2 in. Below Ground Traffic.pdf
Double Check Valve (DC) 3/4 in. through 2 in. Below Ground Non-Traffic.pdf
Double Check Valve (DC) 3/4 in. through 2 in. Above Ground.pdf
Double Check Valve (DC) 3 in. through 10 in. Below Ground Vault.pdf
Double Check Valve (DC) 3 in. through 10 in. Above Ground.pdf
Double Check Detector (DC) 3 in. through 10 in. Above Ground.pdf
Above Ground Enclosure 3/4 in. through 1 in..pdf
Above Ground Enclosure 1-1/2 in. through 2 in..pdf


PDF Readers/Viewers

To view our online .pdf documents, youíll need to have a PDF viewer installed on your computer. There are several options available for free on the internet. Below are links to some of the more commonly used PDF viewers.