How to Clear a Clogged Sink Using High-Pressure Water

Often, low-pressure methods like plunger or chemical drain cleaners wonrsquo;t clear a clogged sink. In such cases, utilizing high-pressure water could be a viable solution. Before resorting to high-pressure water, itrsquo;s crucial to note that you should never use a pressure washer for this purpose. Instead, focus on methods providing 'high pressure' water.

Caution with Chemical Drain Openers

Please be very careful if you have used chemically active drain-removing chemicals in the past. Future efforts in clearing the clog should be approached with caution, wearing splash goggles and gloves to protect your skin and eyes from potential damage.

Alternative Methods to Try Before High-Pressure Water

If plunging has not resolved the issue, consider employing a wet/dry vacuum. A 6.5 amp Ridgid 12 gallon vacuum with a three-inch hose connector has proved highly effective for me. This tool typically clears more clogs than any other method Irsquo;ve employed, making it my go-to solution.

Sealing Off the Overflow Hole

Before applying any method, if your sink features an overflow hole underneath the rim of the basin, seal it to prevent water from escaping. If the overflow hole is located under the faucet, as is the case in this scenario, or in front of the basin and not easily visible, take particular care to address it.

Disassembling the Drain Trap

If the wet/dry vacuum fails, disassembling the bend in the piping beneath the sink, referred to as the trap, could be necessary. Refer to the illustration below for a visual guide to the components involved, including the drain actuator and the drain trap. This illustration does not feature the wall connection I discuss, which may or may not be accessible.

Clearing Steel Drain Pipes Without PVC Connectors

For steel drain pipes without PVC connectors, follow these guidelines to clear the clog:

Measure the diameter of the drain pipe and obtain an inside-threaded coupling of the appropriate size. Fit a reducer from that size down to 1/2 inch. Add a 1/2 inch threaded nipple. Attach a 1/2 inch NPT to standard garden hose adapter with a male end. Seal the assembly with thread sealant, such as Teflon tape. Connect the assembled parts to the drain pipe, creating a hose connection that extends out of the wall.

Run a garden hose to the assembly and, slowly, turn on the water supply. A quarter-turn valve can be added to the hose for local control, which has worked every time for me in these scenarios.

Be patient as you slowly adjust the water pressure; the clog is likely to clear before the valve is fully open. These methods, especially when using high-pressure water, are safe for any well-designed and installed plumbing drain system with an average water pressure of around 50 psi, which is not sufficient to damage the system.

Conclusion

Using high-pressure water to clear a clogged sink can be an effective and cost-saving alternative to more invasive plumbing repairs. By following the steps outlined above, you can tackle stubborn clogs with confidence and save money in the process. Good luck!