DIG 100 psi Hose Thread Backflow Preventer-D45 - The Home Depot


Model # D45

Internet # 100141547

Store SKU # 789976

100 psi Hose Thread Backflow Preventer

DIG 100 psi Hose Thread Backflow Preventer

This item has been discontinued.
The Home Depot no longer carries this specific product.

$4.27 / each


Model # D45

Internet # 100141547

Store SKU # 789976

Store SO SKU # 531677

Use the DIG 100 PSI In-Line Backflow Preventer to help prevent irrigation water from re-entering the main water supply. Often required by city codes to prohibit the contamination when water is shut off and siphoned back into the main water system. No special tools or glue are required for installation.

  • Connects to any standard hose thread (female hose thread x male hose thread)
  • Use with sprinkler or irrigation systems
  • Made from high quality, UV resistant materials
  • Install according to city code
  • Flow rate up to 8 GPM


Assembled Depth (in.)  1.5 in  Assembled Height (in.)  6 in 
Assembled Width (in.)  1.5 in  Inlet size (in.)  .75 
Product Height (in.)  Product Length (in.)  1.5 in 
Product Width (in.)  1.5 in 
Installation  Above ground  Irrigation System Component  Valve 
Irrigation Valve Type  Backflow prevention  Pressure Rating  100 PSI 
Returnable  90-Day  Valve Type  Other 
Warranty / Certifications
Manufacturer Warranty  3 Year Warranty 


Rated 1.7 out of 5 by 9 reviewers.
Rated 1.0 out of 5.0 by This is the Achilles heal of my DIG systems - it leaks Some last longer than others, but this part almost always fails within one year and the leaks are not slow. It's seems to be a weak point. I'm looking for another solution to this; this is a great shame because this done for public health reasons and its functionality should be high because otherwise people not opt not to use it. I'll look for another part that has the same function. September 2, 2014
Rated 1.0 out of 5.0 by failed within 4 days The backflow preventer developed a leak within two days and was leaking badly by the third day May 18, 2014
Rated 1.0 out of 5.0 by broke in 1 month. waste of money it broke in less than a month. water leaks everywhere. September 20, 2014
Rated 1.0 out of 5.0 by Save your $$ The DIG system has worked great all except this backflow preventer. The first one came in the kit I bought. It actually lasted a year but two months into this watering season, it developed a big crack and leaks bad. I added a second system in another part of my yard and built it by piece instead of the kit. The backflow preventer off the shelf lasted three watering cycles before developing about 9 pinhole leaks. I'm afraid to buy any more because I'm wasting my $$ and gas taking stuff back. July 27, 2014
Rated 4.0 out of 5.0 by All In How You Use It My backflow preventor leaked from the minute I installed it. The problem wasn't the product, it was how I was using it. I called DIG customer service which is very responsive and helpful. They said if I have it downstream from the water source, it can leak due to pressure. I moved the entire assembly to the spigot off my house and the leaking stopped. August 4, 2014
Rated 1.0 out of 5.0 by Mr leaking It lasts for 2 week and it started to leak. And water was every where. August 15, 2014
Rated 1.0 out of 5.0 by A piece of junk I have purchased several of these units for my drip irrigation system and all have eventually developed pin hole leaks in the thread area. I'll never buy another. April 21, 2013
Rated 1.0 out of 5.0 by Not worthed for the long run drips system Worked well with a minor leak for two months, then all a sudden it started running like the hose. Not worth the money. Brass is my next choice. July 4, 2013
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