"Sink PVC drain pipe specifications: suitable for different sink models"

In kitchen decoration and daily maintenance, it is crucial to choose the right sink drain pipe. Different models of sinks have different specifications for drain pipes. Correct matching can ensure smooth and leak-free drainage. This article will systematically introduce the common specifications and adaptation plans of sink PVC drain pipes to help you make an informed choice.

The main specifications of standard sink drain pipes include pipe diameter, length and interface type. Common pipe diameters are 32mm, 40mm and 50mm, of which 40mm is the most common specification. The length usually ranges from 300mm to 800mm, which needs to be selected according to the actual distance from the sink to the main drain pipe. The interface is divided into straight-through, elbow and side row. The elbow type is most suitable for under-counter basin installation.

Measuring the drain size of an existing sink is the first step in choosing a suitable drain pipe. Use a tape measure to accurately measure the inner diameter and depth of the drain, record these data before purchasing. For specially shaped sinks (such as square or oval drain), it may be necessary to use with an adapter ring. It is recommended to choose a drain pipe with a deodorant elbow first, which can effectively prevent the return of sewer gas.

Pay attention to adjusting the slope of the pipe when installing. The ideal slope range is 2% -4%. Too high will cause noise caused by the water flow too fast, and too low will easily cause poor drainage. Pipe connections must be sealed with PVC special glue, and after the installation is completed, a water injection test will be carried out to check whether all interfaces are leaking.

Common problems include pipe blockage, interface leakage and odor backflow. Regular cleaning of the filter screen can prevent blockage, while replacing the aging sealing ring can solve most water leakage problems. If you encounter persistent odor, check whether the deodorant elbow is working normally, and add a water seal device if necessary.

Finally, remind, when purchasing, please look for PVC materials that meet national standards. Such products are usually marked with GB/T 5836.1-2018 certification. Avoid using too cheap accessories. Poor quality drain pipes are prone to aging and cracking, resulting in higher maintenance costs in the later stage. Correct selection and installation of sink drain pipes can not only ensure the convenience of daily use, but also prolong the service life of the overall drainage system.