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Gripper 4 in. Plastic Mechanical Test Plug

$942
  • Seals or holds pressure while testing a piping system
  • Plastic body protects against rusting and corroding
  • Wing nut makes tightening and removing easy
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Price:
$942

Product Overview

The Oatey 4 in. Mechanical Plastic Test Plug is intended for use to seal piping or to hold pressure while testing the piping system. This plug has a wing nut for easy tightening and removal. Its plastic body will not corrode or rust.
  • End of pipe gripper plugs are made with ABS glass-reinforced plates for added strength
  • Extra large zinc wing nut for ease of tightening, no wrench required, and will not rust
  • Natural rubber O-ring for excellent expansion and memory
  • Plug is rated for 17 PSI or 40 ft. of head pressure
  • End-of-pipe seals only at the end of a pipe, preventing plug from falling into stack
  • Galvanized carriage bolt to prevent corrosion

Additional Resources

From the Manufacturer

Specifications

Dimensions

Maximum Drain Diameter (in.)4Minimum Drain Diameter (in.)4
Product Depth (in.)4.25Product Height (in.)2.75
Product Width (in.)4.25

Details

ApplicationFloorColor FamilyRed
Color/FinishRedFinishRed
MaterialPlasticPack Size1
Plumbing CategorySinkPlumbing Part TypePlugs & Stoppers
Returnable90-Day

Warranty / Certifications

Manufacturer Warranty1 year

Questions & Answers

Typical questions asked about products:

  • Is the product durable?
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  • What are the dimensions of the product?

Customer Reviews

  • 4.7
    out of 247 reviews
  • 85%recommend this product
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Showing 1-10 of 247 reviews
Best test plug replacement...
Best test plug replacement
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  • Verified Purchase
No issues; seals well....
No issues; seals well.
by
  • Verified Purchase
I use these for mineral feeders. I generally use them as the top and bottom plugs. I've had some ...
I use these for mineral feeders. I generally use them as the top and bottom plugs. I've had some in use for over two years. The pic is of an older design, I no longer put the little piece of pipe in the bottom, I just push the plug farther up in. It works better that way, less built-up.
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  • Verified Purchase
  • Recommended
The staff said there was no product in store to seal a toilet drain when removing a toilet, howev...
The staff said there was no product in store to seal a toilet drain when removing a toilet, however when we did an Internet search this came up. I then found it on HD site and it was available in the very store we visited. Ended up ordering from a different location for pickup. It works great after all the back and forth to find it.
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  • Verified Purchase
  • Recommended
5 found this review helpful
Initial viewing: Sioux chief The Gripper 4” Mechanical Test Plug is constructed using durable pl...
Initial viewing: Sioux chief The Gripper 4” Mechanical Test Plug is constructed using durable plastic wedge plates and a sturdy, pliable rubber sealing grommet. The threaded carriage bold and cast wing nut, are both cleanly threaded and operate smoothly. The top plate is 4 9/32” and will prevent it from falling into a 4” opening, while the bottom plate is 3 23/32” that easily fits in a 4” opening. Testing: I constructed a test pipe using 4” PVC piping, stepped down to ¾” steel nipple that I attached a 15 psi test gauge (see photo). I placed the test plug into the open end of the 4” pipe and then pumped in 15 pounds of air. The first test resulted in a fast decompression. I tested for leaks and found them around the plug. I tightened the plug to the maximum, using a set of vice grips and tested again. The second test resulted in a slow leak. I then made sure that the cut on the open end of the 4” PVC was exactly square and tested again. The integrity of the seal remained solid and it held 15 psi for 2 hours. Summary: I found this product to be made with excellent materials, the type that will result in a good long useful life span. Though the grommet is made of nice durable rubber, it is only 5/8” thick and needs to be exactly square against the walls of the pipe, to seal correctly. I would use this mostly for just temporally closing openings.
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2 found this review helpful
Works great for what it's designed for. As long as you have a clean, round opening, it will easil...
Works great for what it's designed for. As long as you have a clean, round opening, it will easily and securely seal a toilet drain or other open pipe.
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    • Recommended
    3 found this review helpful
    Perfect fit easy to use...
    Perfect fit easy to use
    by
    • Verified Purchase
    Test plug performed as expected.
    I used this to seal off a 4 inch ID cast iron toilet pipe while the flange was on order. It performed much better at blocking gasses than than a rag hand towel stuffed into the pipe.
    by
    • Verified Purchase
    • Recommended
    Good product if you don’t need greater depth into the pipe
    Nice but needed to be deeper ( greater depth) back of product rusts within a year
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    • Verified Purchase
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    Showing 1-10 of 247 reviews