Model # D45

Internet # 100141547

Store SKU # 789976

100 psi Hose Thread Backflow Preventer

$3.84 /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


Inlet size (in.) 
Product Depth (in.) 
Product Height (in.) 
Product Length (in.) 
1.5 in 
Product Width (in.) 
1.5 in 
Above ground 
Irrigation System Component 
Irrigation Valve Type 
Backflow prevention 
Pressure Rating 
100 PSI 
Valve Type 
Warranty / Certifications
Manufacturer Warranty 
3 Year Warranty 


Price: $0 - $10
Brand: DIG
Review Rating: 2 & Up
1 Question1 Answer

Customer Questions & Answers

100 psi Hose Thread Backflow Preventer
100 psi Hose Thread Backflow Preventer

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1 answer

What is the material that this is made out of. It looks like plastic. You need to state that.

This question is from 100 psi Hose Thread Backflow Preventer
Asked by
Silver Spring, MD
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August 9, 2015
You need to specify the material this is made out of.
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Answer (1)

Asked by
Southlake, Tx
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September 11, 2015
Is plastic.
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Rated 2.0 out of 5 by 12 reviewers.
Rated 5.0 out of 5.0 by I'm glad I found this I got this to use as a backflow preventer on a hose-end garden sprayer (actually, a 1 gallon Mixer-Proportioner). This product was very reasonable priced. March 15, 2016
Rated 3.0 out of 5.0 by Please note To all the negative reviews: please note that it is warranted for THREE years. I suggest there are many satisfied users out there with only the disgruntled replying. I have one that worked great all last summer, this year it leaks. Can't blame the device, I left it on the hose in my RV over winter & it froze. Leaks but still works. September 11, 2015
Rated 1.0 out of 5.0 by Leaks after less than a year Used it for about 6 months then took it in for the winter. When I re-installed it in the spring, it had sprung several pinhole leaks. It's a piece of junk. April 16, 2015
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 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 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 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 Mr leaking It lasts for 2 week and it started to leak. And water was every where. August 15, 2014
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