Model # DP IWTG

Internet #100175467

Store SKU #106033

null 3/4 in. Plastic Water Pressure Test Gauge
0098268159950

3/4 in. Plastic Water Pressure Test Gauge

  • 3/4-inch hose connection
  • Easily attaches to outdoor hose bibb or water heater drain
  • Determine if an expansion tank or pressure regulator is needed.
$9.98 /each

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Product Overview

When you choose this hose connection gauge, you can rest assured that you're getting a quality product to test water supply pressures within a distribution system. Its red indicator hand holds at the highest reading registered for detection of thermal expansion pressure surges. It easy to install, and no tools are required.

California residents: see   Proposition 65 information

  • Made of steel for durability and strength
  • Easy to read indicator for detecting pressure surges
  • Features a copper alloy tube sensing element
  • Accuracy is ASME, type B

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Customer Questions & Answers

what does the red arrow indicates

when I checked the water pressure of my house the black arrow indicated 65 and the red one 125. what does this mean?
Asked by: babaraffi
High limit but the problem is it does not work
Answered by: Diego
Date published: 2017-03-21

How do you get the arrows to zero before you attach it to the line. Mine are showing 20 psi and it's not hooked up.

Asked by: anne
If your BLACK arrow is at 20 psi and not 0 when not connected to a faucet, you have a bad unit. Take it back to HD and exchange it for another.
Answered by: Drummer2
Date published: 2017-01-23

Is the Watts 3/4 in. Plastic Water Pressure Test Gauge DPIWTG available at any store locations around the Columbus Ohio area.

Asked by: Anonymous
best to check for "in store" availability when you are next on-line at www.HomeDepot.com. You can look at your most convenient store, or look for stores in your area close enough for your convenience.
Answered by: StevenR
Date published: 2015-09-20
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Customer Reviews

3/4 in. Plastic Water Pressure Test Gauge is rated 3.3 out of 5 by 37.
Rated 3 out of 5 by from The drag hand is of limited usefulness, but the gauge appears to read water pressure just fine. ... The drag hand is of limited usefulness, but the gauge appears to read water pressure just fine. It's really meant for short term testing. Seems to be reliable for finding your nominal pressure. The red drag hand is really loose and can actually walk up on its own if the pipe vibrates enough. Another post suggested pushing some silicone grease or similar stuff under the brass knob to dampen it a little. That seemed to work. I used this gauge to determine what size expansion tank I would need on the water heater that I had to install. I recommend that when you connect it to a hose faucet that you open the faucet valve just slightly. Just crack it open enough to read pressure. With the valve open wide, I quickly discovered that it really exaggerated even small instantaneous pressure spikes. Like when someone flushes the toilet. My nominal pressure is about 70 psi, but when even something like the toilet tank fill valve closed, the needle would overswing and take the drag hand instantly to around 140. Sometimes even higher. By only slightly opening the faucet valve, the pressure changes were registered a little slower and needle would not overswing near as much.
Date published: 2017-01-05
Rated 4 out of 5 by from I purchased this water pressure test gauge after having a faulty water pressure reducing value re... I purchased this water pressure test gauge after having a faulty water pressure reducing value replaced. As the reducing value was going out, our water pressure would jump to extremes. That along with defective PEX pipe resulted in three leaks in our home. The plumber that replaced the pressure reducing value had a test gauge similar to this one. His however was heavy and of much better quality than this one. He recommended I buy one and test my pressure monthly. I looked for one similar to his but this was the best could find. It only takes a few minutes to hook it up to the front yard water line to check the pressure. This gauge is plastic and feels kind of flimsy but I've used it four months and it's hold up nicely.
Date published: 2017-01-23
Rated 1 out of 5 by from These are bad! Bought one and discovered the package was opened when I got home. Hooked it up and... These are bad! Bought one and discovered the package was opened when I got home. Hooked it up and found that the black needle would not go below 90psi. Took it back. Got another one and checked it to make sure it was set to 0, which it appeared to be. Took it home, hooked it up and this one will not go below 130psi. It is impossible to reset the unit - if I use the red needle to push the black one to 0, the black one just goes back to 130psi as soon as it is released. I'm going to return this one and go some place else to get a WORKING unit.
Date published: 2017-04-04
Rated 5 out of 5 by from The gauge worked great!! I saw other reviews and was not too sure if I wanted to buy this unit. H... The gauge worked great!! I saw other reviews and was not too sure if I wanted to buy this unit. Home Depot has a great return policy, so I figured I had nothing to lose. Purchased in December 2016. I connected it to my faucet on the laundry tub and turned on the faucet on full. It went up to about 75 psi. I flushed a toilet and it dropped to 60 psi and then backup. Did not leak. Used 3 different times and worked great!!
Date published: 2017-01-23
Rated 2 out of 5 by from The only reason I recommend it is because it's inexpensive and accurately measures pressure. The ... The only reason I recommend it is because it's inexpensive and accurately measures pressure. The two start rating is for the useless red limit needle. As others have said, the needle moves far too freely (with no resistance) and every bump from the black pressure needle sends it flying. You'll think your pipes are about to explode. With more drag and it would work much better. Simple manufacturer fix is in order.
Date published: 2017-03-20
Rated 4 out of 5 by from For ten bucks this thing does the job. Hook it up to garden hose and pressure move up. But It's s... For ten bucks this thing does the job. Hook it up to garden hose and pressure move up. But It's stuck at max point. The knob allow you to turn it back to zero , but you have to remove the device and re-attach again to measure, it's a hassle. Also the red needle is being push by the black needle and if pushed too quick it goes way beyond max psi (inaccurate, but if you watch it you know.
Date published: 2016-11-09
Rated 5 out of 5 by from This Watts Pressure Test Guage proved to be a very Useful and Informative tool by Showing the cha... This Watts Pressure Test Guage proved to be a very Useful and Informative tool by Showing the changes in Our Hot Water Recirculating system. Having added a 2nd Hot Water Heater as a Back Up / Buffer tank to Warm the Cold Water going into the Main Hot Water Heater, I was concerned about the Water Pressure being created by the New Check Valves being added to the Closed system. I also had added a Recirculating Pump recently to the Return Lines since the Gravity Loop was not doing the Job. As a Result of the Results Shown by this Guage, I concluded that the Old Check Valve must have Failed, leaking Cold Water into the Gravity loop; 30 years of Hard Water will do that. Now I know.... 40 Pounds of City Water Pressure, Spikes of Hot Water Lines Pressure up to 80# ... steady Pressures throughout the Day as Tenants use the Hot Water and the Hot Water Heaters come on. Handy Tool that Works Well.
Date published: 2017-03-09
Rated 4 out of 5 by from How to fix the loose red peak needle <----O---- Used twice so far, and it's consistent. Don't know how accurate. Reading 70 static, and we'll see what long-term peaks we get. I suspected pressure was a bit high, but not sure if it's worth a reducing valve, because faucets are often used at a trickle-flow, which I hear is a problem for many pressure regulators. But here's how to fix the loose red peak indicator needle: Put some plumber's silicone grease behind the brass knob to add some drag. Use a flat toothpick or scrap of cardboard to force some of the grease up behind the knob all around, then pinch away any excess using a paper towel. Now the peak needle will not bounce, and will hold its reading with gentle removal and transport! The factory should grease the indicator knob, or put some kind of rippled HDPE washer behind it.
Date published: 2016-04-24
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