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Wenzhou Lifei Fluid Equipment Co., Ltd

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Basic Introduction and Application of Air Blockers
Date: 2025-12-06Read: 16

Air blocking device (also known as hygiene grade anti backflow floor drain) is based on the structural characteristics of imported clean floor drains from abroad, combined with the actual situation in China,

Designed and manufactured using stainless steel material. It has successfully solved technical problems such as dredging, cleaning, water sealing, and air sealing, and is suitable for various types of purification plants

Cleanroom (GMP certified) dedicated clean floor drain, mainly used in chemical, petroleum, power, pharmaceutical, beer, food

Specialized cleaning accessories for dairy beverages and laboratories.

Disadvantages of ordinary floor drains:

1. Cannot be connected to pipelines;

2. Liquid discharge is prone to splashing, causing secondary pollution to the environment;

3. A shut-off valve needs to be installed on the equipment pipeline to discharge water into the floor drain.

Advantages of air blocking devices:

1. Integrated design, can be connected to storage tanks and equipment, with a rocker type check device inside the device;

2. The liquid discharge is all inside the partition device, with no risk of splashing liquid and no secondary pollution;

3. Equipped with an audition observation window, it can observe the internal working conditions and facilitate maintenance;

4. Made of 304 stainless steel, the gasket is made of PTFE or silicone rubber, which meets the requirements of pharmaceutical production;

5. The check device during system vacuum pumping is equipped with a silicone pad, which can isolate the drainage pipes and sewers of the equipment.

6. The floor drain itself has a water seal, which meets all the requirements of the new GMP and clean floor drain.

Location of use of air blocking device:

1. Ingredient tank

2. Sterilization cabinet

3. Rubber stopper and aluminum cover cleaning machine

4. Freeze drying machine

5. Cleaning machine

6. Water system storage tank

7. CIP cleaning station

The main use is the clean sewage device commonly used in the clean areas of production workshops in major pharmaceutical manufacturers across the country. It cannot be connected to equipment, storage tanks, etc. through pipelines, and liquids are prone to splashing when discharged. When steam is discharged, a large amount leaks indoors, and it cannot isolate odors, causing secondary pollution to the environment of clean workshops; In addition, a shut-off valve needs to be installed on the equipment pipeline, and the discharged water needs to pass through an S-shaped bend when entering the sewage device. This S-shaped bend is prone to blockage and is not easy to observe and repair. At present, there is a lack of air partition sewage discharge devices in the market that meet the requirements of the new GMP certification.