KitHomes>DIY Plumbing>UnblockingDrains2 Unblocking Sink Drains (Continued)
This is where you may need tools that you might not have handy but it is definitly a job for the correct tool. Don't try to explore the pipe with anything that might potentially be dropped, break, or otherwise become lodged in your plumbing - the idea is to correct the problem, not cause bigger problems. The correct tool for the job at this time is usually a plumbers auger (also called a snake). This is a long, flexible, springlike contraption that is "snaked" down into the pipe. You can purchase a small, basic plumbers snake at any home superstore or plumbing supply store and they are fairly inexpensive (another example of a tool that pays for itself the first time you can use it instead of calling a plumber). Push the auger into the pipe until you encounter a blockage. If you are using a manual auger, you may need to twist it (they usually have set screw and handle to help) to get around turns in the pipe. Once it reaches the clog, you twist it to "auger into" the blocking substance. If you have a fibrous clog, you will pull the auger back along with a portion of the clog - repeating as many times as necessary to remove it. For softer clogs (like grease) you may just force the auger through the clog and rely on water pressure later to help continue to remove the loosened clog. If you are unsure that you have cleared the clog completely and you want to check before you re-assemble everything use a hose to run some water down the pipe. Run the water SLOWLY - you don't want to find out the hard way that the clog is still there. Keep your bucket underneath the pipe while testing. If it is cleared, re-assemble your sink/trap and run your water for a while - make sure that your drain is working normally - if it is slow, you may still have a partial blockage. One other potential solution is the "as seen on tv" water blaster variety of drain clearers. These gadgets are usually very inexpensive and typically consist of a small rubber nozzle with a hose fitting on one end. The concept is simple, you stick the nozzle into the drain, hook it up to a hose, and turn on the water. The water pressure first makes the nozzle swell to fill the drain or pipe opening and seal/hold it in place. Then the nozzle forces water into the pipe hopefully clearing the block by building up pressure behind it. If you listen, you will hear the clog clear and water flow rapidly down the pipes. A couple problems to be aware of with these systems: If you have PVC drain fittings (as many sinks do), you better make sure you connections are good - if there are any minor leaks or loose fittings you are likely to end up with a sprinkler system under your sink. From personal experience there is one other problem you may run into. When you turn off the hose, the pressure that previously swelled the nozzle to hold it in place is gone - however there is still water and pressure in both the line and the nozzle. The results similiar to shaking up a soda bottle and removing the cap - it makes a great funny story to tell you friends in hindsight, but it's not quite so funny when you are mopping up the kitchen.
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