GB/T 37916-2019 in English

Interpretation of the National Standard of the People's Republic of China GB/T 37916—2019

1. Background of Standard Formulation and Analysis of Technology Evolution

With the popularity of high-pressure cleaners in industrial and household applications, their safety issues have received increasing attention. The formulation of GB/T 37916—2019 aims to standardize the safety requirements of small electric high-pressure cleaners and ensure the reliability of the equipment in normal use and potential dangerous situations. This standard combines international general technical requirements (such as GB/T 3883.1, GB 4706.89—2008) and domestic actual use experience, reflecting the evolution trend of industry technology.

2. Comparative analysis of standard frameworks

3. Interpretation of the core content of the standard

3.1 Safety requirements

General requirements:The cleaning machine must comply with the electrical safety standards of GB 4706.89—2008 and ensure stable operation within the rated voltage fluctuation range of ±10%.

Overpressure protection:The equipment must be equipped with a pressure regulating unloading valve to ensure that the system pressure does not exceed 1.5 times the rated value. The device should pass strict testing and be sensitive and reliable.

3.2 Spray gun reaction force and torque control

One-hand grip spray gun:Reaction force ≤60 N, torque ≤10 N·m. This indicator is calculated by formula and combined with actual test to ensure safety.

Two-hand grip design:When the reaction force or torque exceeds the specified value, a two-hand grip design must be adopted to improve safety.

3.3 Hydrostatic pressure test requirements

Pressure-bearing parts test:Press to 2 times the rated working pressure and maintain for 5 minutes without leakage. Plastic parts need to be preheated before testing.

High-pressure hose test:Press to 3 times the rated pressure and maintain for no less than 5 minutes to ensure no rupture.

4. Implementation recommendations

4.1 Precautions for manufacturers

• Select electrical components and materials in strict accordance with standard requirements.
• Establish a complete testing system to ensure that each device passes the hydrostatic pressure test and overpressure protection test.
• Provide instructions that meet the specifications, including safety warnings and operating instructions.

4.2 Precautions for users

• Regularly check the status of the spray gun, hose and other key components to avoid overloading.
• Use the equipment strictly in accordance with the cleaning agents and working environment recommended in the instructions.
• Ensure that the equipment is in good condition before operation and take necessary protective measures (such as wearing goggles).

5. Conclusion

The implementation of GB/T 37916-2019 will significantly improve the safety performance of small electric high-pressure cleaners and provide comprehensive protection for users and equipment. By strictly following the standard requirements, companies can ensure product quality while reducing potential safety risks.