Introduction To The Performance Requirements Of Long Tube Respirators

- Oct 10, 2019-

The general requirements for long-tube respirators can be explained in terms of material requirements, structural requirements, and overall performance. Let us first introduce the material requirements and structural requirements for long-tube respirators, as follows:

Material requirements for long tube respirators:

1. The material directly in contact with the head and face should be harmless or non-sensitizing, and the surface of the metal parts should be treated with anti-corrosion treatment;

2. The material should have sufficient strength and elasticity to prevent damage or deformation during normal service life;

3. Parts that can enter the work site should be able to withstand the cleaning or disinfection process recommended by the manufacturer;

4. The long tube should be airtight and resistant to the penetration of external liquids.


Structural requirements for long tube respirators:

1. The component should not be structurally damaged, and its design, composition and installation should not cause any harm to the user;

2. The head should be adjustable, the mask should be firmly fixed to the face, and there should be no obvious pressure or tenderness when worn;

3. The mask should have a wide field of view and the object should be truly undistorted. The lens should not appear to affect the vision such as fog;

4. The airway and air supply mask should not limit the user's head movements or actions;

5. When the fan air supply device stops working, it should be able to switch to the backup air supply device or change to the self-priming mode and alert the guardian;

6. The length of the long pipe should not exceed 80m;

7. In normal operation, the respirator should be designed so that only one mask can be supplied to each long tube. In special cases, each long tube can only supply up to two masks;

8. Self-priming long-tube respirator should be equipped with a low-resistance filter to prevent foreign matter from entering;

9. Connections with different pressure ranges should not be interchangeable;

10. Air filters are not allowed to be designed and mounted on the waist or face shield.