Which PVC drain is quieter is known

1.The source of noise for building drainage?

PVC The noise of the drainage pipe mainly comes from the water flow impact, pipe vibration and air flow turbulence. When the water flow falls into the pipe from a high place or encounters the elbow or three links, it will produce obvious impact sound, and the vibration of the pipe wall will also spread through the bracket and wall, magnifying the noise influence.

In addition, when the water flows through the pipeline at a high speed, it is easy to mix with the air to form turbulence, resulting in bubble rupture and air vortex, further increasing the noise.

In order to reduce the noise transmission in building drainage, PVC muffler emerged at the historic moment. At present, the common market is "PVC spiral muffler" and "PVC double wall hollow spiral muffler", the following is a specific comparison.

2.Pipeline structure comparison

PVC spiral al sildrain pipe:

Pipe wall with spiral bars, spiral bar is straight oblique uniform distribution, and the center line angle is 8-20, drainage water under the spiral bar diversion, according to the spiral bars of the oblique straight line along the pipe wall, will not produce strong impact on the inner wall, than the standard solid wall tube can reduce 8-10 decibels, reduce the noise effect.

PVC Double wall hollow spiral sildrain:

As the name suggests, the structure of the double wall hollow spiral tube is double layer design, including the inner wall and the outer wall. The unique hollow layer design enables the pipe system to transfer double noise and vibration, and thus greatly improves the sound insulation effect.

3.Comparison of the mechanical properties

PVC spiral al sildrain pipe:

On the premise of maintaining the basic strength of PVC solid wall pipe, the spiral structure can enhance the rigidity of the pipe and reduce the possible deformation of the pipe in the process of use. When the fluid passes is affected by the spiral wall, it has a certain noise reduction or anti-erosion effect.

PVC Double-wall hollow spiral silencing drainage pipe

The double-wall hollow structure forms a design similar to the I-beam, which makes the pipe with high bending rigidity and better resistance to external pressure and reduce deformation. Compared with the inner spiral pipe with a single layer structure, the hollow wall design can disperse the stress and improve the overall stability of the pipe.

4.Application scenario comparison

PVC spiral al sildrain pipe:

Most suitable for the general industrial and civil building drainage, ventilation, air conditioning system, etc.

PVC Double-wall hollow spiral silencing drainage pipe:：

Often used for strict noise control requirements of occasions, such as hospitals, hotels, theaters and other places of exhaust, exhaust system.

To sum up, the hollow spiral tube can be regarded as an upgraded version of the spiral muffler, and its silencing effect is better. However, it can not generally say which is better or worse, but to comprehensively consider the application scenario, comprehensive cost and other aspects, the appropriate is the best.