The rubber gloves allow you to get a tighter grip when attempting to loosen the P-trap nuts by hand. If the rubber gloves don't work, go ahead and use the plumbers wrench. Hold the P-trap with one hand while you twist the P-trap nut with the wrench. Once you have loosened it, finish unscrewing by hand.
In some situations, you may be able to soften that tight joint again by mimicking the chemical reaction with heat. Try using a hair dryer or blow torch to gently heat the area where the glue was applied. You can then twist and pull until the pipe is loosened.
Use what's called a basin wrench. It's like a crows foot wrench but it's spring loaded which makes it self adjusting and the head (foot) swivels to accommodate tightening or loosening. They are usually telescopic as well ...
There should be a threaded cap either side of the U-bend; you need to carefully unscrew these using the wrench or mole grips. As you loosen these, water will rush out into the bucket. Remove the U-bend and empty the contents into the bucket then thoroughly rinse the U-bend out.
You can clean the P-trap out without shutting off the water, but the stoppage is rarely in the p-trap itself - the blockage is generally further into the line.
The rubber gloves allow you to get a tighter grip when attempting to loosen the P-trap nuts by hand. If the rubber gloves don't work, go ahead and use the plumbers wrench. Hold the P-trap with one hand while you twist the P-trap nut with the wrench. Once you have loosened it, finish unscrewing by hand.
Pour some baking soda down your drain and then pour boiling water down after. Sometimes this will clear the clog. Use a plunger on your sink drain to try to force the clog out of the trap.
Try a Basin Wrench
“A basin wrench is a great tool for reaching in tight spaces to loosen a nut,” he says. While they're primarily used by plumbers, they can also be used on any hard-to-reach nut.
USE A PAIR OF HAMMERS
Sometimes if a bolt is particularly stubborn, using a pair of hammers can help loosen the nut so you can remove it with a wrench.
Use a couple of purpose built pipe wrench s. One on the fitting and one on the pipe you are trying to remove it from. Be sure the wrenches are orientated so that as you turn them their jaws are locking on the fitting/pipe. If this doesn't work, heat up only the fitting with a propane torch while wrenching on it.
Apply heat directly to the nut or screw. Heat can expand the metal enough to turn it. Hit the nut gently with a hammer to force it to turn. If the stuck nut or bolt that is covered in mineral deposits, remove them with white vinegar and a wire brush.
Is your P-trap working properly? If you detect any foul odors near the P-trap that remind you of a smell similar to rotten eggs, then it means that there is hydrogen sulfide present. This, and other harmful gases, bacteria, and viruses, can get into the house if your plumbing trap has malfunctioned.
To remove the drain trap, unscrew the slip nuts with a wrench and slide them out of the way. Directly beneath the drain outlet of every kitchen sink and every bathroom lavatory is a trap. This element is vital not only to the proper functioning of the drainage system but also to your health and safety.
P-traps are known for their reliability and efficiency in maintaining a water seal, which helps to prevent sewer gases from entering buildings. Additionally, P-traps are less prone to syphoning and drainage issues compared to S-traps, making them a preferred choice for both residential and commercial plumbing systems.
If it is a largish bolt on something that needs to come off, but damage is not an issue, a center punch and a hammer properly applied can turn a nut. A cold chisel and a hammer can also remove a bold, and so can a hack saw.
Lubricate it.
If cleaning doesn't work, you can try using a penetrating oil like WD-40 around the perimeter and any exposed crevices of the handle to loosen it. Let the oil sit for a moment before trying to wiggle it free.
Unlike other plumbing fixes, there is no need to turn off the home's main water supply. You only need to make sure water going into the specific area you're working on is off. It's important to remember that this is still a wet process.
Apply heat to the stuck fixture or plumbing nut with a hair dryer or heat gun. You may not want to drain all the water out of the fixture before applying the heat since the water will be a heat sink for the inner part and the fastener will have a bigger variation in temperature quicker.