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Water Stopper Plumbing Tool
by Wassi

Proudly made in the USA

The Wassi Water Stopper is an innovative, inexpensive way to stop the flow of water when a minor copper pipe repair is needed. A must for every plumber's tool box! You will no longer need to use the white bread trick. We also offer Cold-Shot pipe freezing kits from General Wire Spring Company.

Wassi Water Stopper for Pipe Repair

Temporarily holds back the flow of water during pipe soldering repair

Wassi Water Stopper for Pipe Soldering

"An Indispensable Plumbing Tool"
  • Instantly stops the flow of residual water in pipes
  • Quickly repair copper, PVC and galvanized piping
  • Non-rusting, all stainless steel cables and sheaths
  • Cables easily slide though elbows and valves
  • New, patented safety features eliminate pinched fingers
  • Interchangeable cables from 1/2" to 2" (W51506)
  • All parts made and assembled in USA

Caution - Pressure buildup may dislodge the plug. Take care not to position yourself directly in front of the piping where the water stopper is being inserted.

Wassi Water Stopper Kit - W51500
Kit includes: 1 handle unit, 1/2", 3/4", 1" cable assemblies
Wassi water stopper kit #51500 $37.83
Deluxe Wassi Water Stopper Kit - W51506
Kit includes: 1 handle unit, 1/2", 3/4", 1", 1-1/4", 1-1/2", 2" cable assemblies
Wassi water stopper kit #51506 $74.79
Wassi Water Replacement Cables
W51012 - 1/2" $12.79
W51034 - 3/4" $12.82
W51010 - 1" $12.83
W51114 - 1-1/4" $12.84
W51115 - 1-1/5" $12.89
W51120 - 2" $12.93
Wassi #W51040 Replacement Handle Only $9.94

- OR - View Cart

Directions for using the Wassi Water Stopper

Works on Copper, PVC and Galvanized Pipe

Wassi water stopper for soldering
Wassi water stopper for repairing pipes
Wassi water stopper for pipe repair

Step 1: Insert cable into forward end of pistol grip.

Step 2: Push assembly completely into grip. Pull rear cable stop down into depression.

Step 3: Slide components to be soldered onto cable. Insert expansion end of cable into existing copper or plastic line. Make certain expansion seal is at least 6" from solder joint. Squeeze pistol grip until handle latches. Solder components.

When finished, unlatch by sliding handle to one side and pull cable from pipe.

Caution - Pressure buildup may dislodge the plug. Take care not to position yourself directly in front of the piping where the water stopper is being inserted.

Frequently Asked Questions

Q. "Why does the expansion seal (plug) need to be at least 6 inches from the solder joint?"
A. The plug should be at least 6 inches from the solder joint in order to prevent it from melting.

Q. "My water is flowing more than a trickle. Will the Wassi water stopper halt the flowing water?"
A. It will for only a brief period of time. Pressure will build against the plug and eventually push it out with great force.

Q. "How can I reduce the chance of pressure buildup against the plug?"
A. If there is a faucet, hose bibb, or any other way to release water/pressure between the seeping shut off valve and the plug, you can open it to keep pressure from building. If not, extreme caution should be taken.

Q. "How long are the cables?"
A. The overall length is 20 inches, however the cable should only extend into the pipe approximately 12" to protect the plastic handle from coming into contact with the torch flame.

Q. "Why do you caution against pressure buildup if water is just trickling out of the pipe?"
A. When the trickle is flowing free, there is no pressure. When it is plugged off, pressure will increase until it's equal to the supply pressure. The smaller the pipe, the faster the pressure will increase. Have everything ready to solder before you close the plug.


Please note: While we strive to ensure every product we label as "Made in the USA" really is 100% made in the USA, it is also important to understand that sometimes manufacturers make changes to their products, or for various reasons may receive components or materials that they would normally purchase domestically from an overseas supplier - and they don't necessarily let distributors (like us!) know that they've changed something about the product or where it is manufactured.

If you receive a product that PlumbingSupply.com® says is "Made in the USA" and the product states it was manufactured elsewhere, please contact us. We will happily replace or refund your purchase to your satisfaction.


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