T/ZSHG 021-2023 Quantitative aerosol valve

Scope

Scope: This document applies to quantitative aerosol valves with a diameter of φ25.4 mm and φ20 mm compatible with aerosol cans. Main technical content: - Appearance: The quantitative aerosol valves should be complete and free from damage, with a clean and intact overall appearance. The protective layers on the inner and outer surfaces should be free from scratches and peeling. All components should be installed correctly. - Dimensions: The dimensions of the quantitative aerosol valves are shown in Figure 2, Table 1, and Table 2. The height H2 of the valve stem of the quantitative aerosol valve has a size deviation of ±0.30 mm. The diameter d1 of the top end of the valve stem of the quantitative aerosol valve has a size deviation of 0 mm to 0.10 mm. The length L of the liquid-drawing tube has a size deviation as follows: L≤150 mm, ±1.5 mm; 150 mm220 mm, ±3.0 mm. - Performance: - Fluidity: All channels of the quantitative aerosol valve should be unobstructed when actuated. - Sealing: The quantitative aerosol valve should not leak under a pressure of 0.85 MPa or more for 1 minute. - Pressure resistance of the fixed cover: The fixed cover of the quantitative aerosol valve should not deform more than 0.30 mm at a pressure of 1.8 MPa for 1 minute. - Pull-out force of the liquid-drawing tube: The pull-out force of the liquid-drawing tube of the quantitative aerosol valve should be greater than or equal to 15 N. - Pressure resistance of the valve body: The pressure resistance of the valve body of the quantitative aerosol valve should be greater than or equal to 180 N. - Quantitative testing: The quantitative aerosol valve should dispense a consistent amount when pressed. - Single spray volume: The single spray volume of the quantitative aerosol valve should have a tolerance of ±15%. - Total pressing times per can: The total pressing times of the quantitative aerosol valve should comply with the total pressing times indicated on the pr

Development Information

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