The kitchen waste drain system scarcely fails and needs repair. However, if it is required during the renovation of the kitchen, usually the whole drain assembly is then replaced.
The complexity of the replacement process depends upon the difference between the new sink assembly and the older one. There are a few elements that may need to be changed for the installation of a new drain assembly. That is why it is more complicated than one imagines it to be.
Kitchen drain traps are usually found in different kits so as to match the required specifications. The kits match the specifications of a single basin sink, double basin sink, and a sink with a garbage disposal. Kits are available in copper as well as plastic.
Nowadays, people prefer to use plastic kits that are hidden from view. Be careful to choose the right size for your kitchen sink. If you somehow find it incompatible, use a transition adapter fitting that can transform the size of the available pipe to match the required size. It is recommended to use smooth pipes to avoid the clogs that can occur by stopping food particles.
Tools Required:
Let us have a look at some essential tools that are required to do the kitchen sink waste pipe connection.
- Tape measure
- Marker
- Hacksaw
- Kitchen drain trap kit
- Sink drain and strainer assembly
Kitchen Sink Waste Pipe Connection Step By Step:
This guide will take you forward to do the connection. The whole process is converted into simple and easy steps to reduce the complexity. The following subsections will provide handy information on different practical steps.
Turn off the Supply of Water:
Try to find the two valves underneath the sink. One is for the hot water and the other is for cold water. Rotate both of them in a clockwise direction to cut the supply of water off. Do not turn it on as long as your plumber is working on it.
Measurements of the Inner Diameter of the Waste Pipelines and Drain:
Accurately measure the inner diameter of the waste pipeline to make sure that you will get the new pipe of accrue size. Usually, 3.2 or 3.8 cm diameter pipes are used for kitchen waste drainage. However, the transition fittings are available that can be used for the adjustments in sizes.
Check the Height of the Drain Outlet:
Before doing the connection of a new sink assembly, it is important to note the height of the trap arm on the old sink. The height should be measured from the floor to the center of the trap arm. The trap arm is a horizontal piece that connects to a sanitary tee fitting and slopes down towards the tee to ensure proper drainage.
If the height is more than 16 inches, the new sink will not allow the necessary downward slope for the trap arm. You can lower the position of the tee fitting as well but that is a complicated process and try to avoid it.
Complete the Kitchen Drain Trap Kit:
Choose a kitchen drain trap kit that matches the measurements of your kitchen sink drain and p-trap. The kit must be comprised of the following things:
- J-pipe
- trap arm
- Tailpiece
- Washers
- Slip nuts
J pipes are pipes in J shape with one taller than the other. Tailpieces are pipes with one flared and one unflared end. Slip nuts and washers are used to tighten the grip on threads to avoid leakages.
Installation of J Pipe:
Screw the j-pipe onto the trap arm to accomplish a p trap. Avoid too much tightening of the j pipe because you may need to adjust the angle later on. Also, avoid using glue or other sticky material like that else you will need to cut the pipes whenever a repair will be needed in the future.
Slide Slip Nut and Washers:
Slide slip nuts on the tap arm while making sure that the threading point towards the straight end. Then slip tapered or flanged washers as per requirement. Be careful not to put the washers on with the tapered side facing in. This may result in leakage from the washer.
More steps toward connection:
Here are further simplified steps in the process of kitchen sink waste pipe connection:
- Put the trap arm into the waste pipe so the j pipe is in line with the drain.
- If the tapping arm is extended past the drain, cut it using a hacksaw.
- Tighten the tapping arm onto the threads on the waste pipe.
- Size the tailpiece properly.
- Connect and test the drain
- Turn on the water supply to check the assembly.
Conclusion:
The kitchen sink waste goes through the waste pipe and connects with the sewage line. Therefore, it is quite risky to avoid any issue being noticed in the kitchen sink drainage. It is also better to call a professional person if you face a drainage issue in your kitchen sink.
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