The washing machine is an essential household appliance in modern families. As a laundry appliance, it needs to be in contact with water for a long time, so some parts on the washing machine need to be waterproof.One of the most important parts is the water inlet valve of the washing machine.

The water inlet valve is where water enters the washing machine. If the water inlet valve leaks, water will flow into the inside of the washing machine, causing a power outage or other damage. Therefore, it is necessary to conduct a waterproof test on the water inlet valve of the washing machine (also known asAir tightness test）。

Today, Hirays will share with you how to test the sealing of the water inlet valve of a washing machine and how to test the air tightness of washing machine parts.

The picture below is the product we are going to conduct a sealing test this time. From the appearance of the product, we can see that there are holes on both ends of the water inlet valve of the washing machine, namely the water inlet hole and the water outlet hole.Because the product has holes, we can seal one end of the water inlet valve with silicone and make the other end of the water inlet valve an air inlet to directly test the product.This method of directly filling compressed air into the interior of the test product for air tightness testing is called direct testing.For test products without any inflation port, sealing testing can also be performed. Generally, a copy mold is made based on the test product.Hirays air tightness detector comes with 2 pressure modes and 8 basic test methods, which can be combined into more than 20 test functions to easily cope with various working conditions and meet customers' different testing requirements.

Because the water inlet valve is used in harsh environments, the test pressure required by the customer is 800kpa, the air intake time is 5s, the pressure stabilization time is 10s, and the test time is 10s.According to the customer's test pressure, the corresponding waterproof level is equivalent to IP68 waterproof level.The so-called IP68 waterproof rating means that it completely prevents dust from entering and can be immersed in water for a long time under a certain pressure.

After setting the test program according to the product and customer requirements, you can connect the corresponding air source and power supply. The air tightness detector and test tooling need to be connected to the factory air source (air source pressure range is 0.4Mpa-0.8Mpa) to conduct a waterproof test on the water inlet valve of the washing machine. The picture below is the details of our company's test of the water inlet valve of the washing machine.

Hiraysi Technology is the earliest R&D and production company in ChinaAir tightness testing equipmentOne of the manufacturers, the company is headquartered in Shenzhen, the capital of innovation. After more than ten years of development, Hirays air tightness detectors have been used in more than 1,000 factories.The instruments are also sold at home and abroad.If you are interested in our waterproof testing equipment, please call Hirays Technology.