GB5135.6-2018
Automatic sprinkler systems—Part 6: Conventional valves
自动喷水灭火系统 第6部分：通用阀门
GB 5135.6-2018 is a current mandatory Chinese national standard for Automatic sprinkler systems—Part 6: Conventional valves. It appears in the Environment compliance cluster with a product safety focus and has an implementation date of Sep 1, 2018.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard applies to conventional valves used within automatic sprinkler systems, including fire gate valves, ball valves, butterfly valves, solenoid valves, and check valves. It is specifically designed for fire protection applications and does not apply to industrial or general plumbing valves not integrated into fire suppression systems. Manufacturers producing components for the Chinese fire safety market must adhere to these specifications.
Technical requirements
The standard mandates that valve bodies and covers be manufactured from corrosion-resistant materials such as ductile iron or bronze. It sets specific criteria for connection methods (threaded, flanged, or grooved) and requires rigid non-metallic parts to withstand thermal and warm water aging without deformation. All valves must maintain structural integrity and sealing capabilities under extreme pressure conditions. For specific valve types like gate and butterfly valves, the standard defines limits for maximum operating torque and mechanical strength to ensure reliable manual or powered operation. Fire signal valves are required to have robust electrical signal conversion capabilities, including strict insulation resistance and overload capacity. Additionally, fire solenoid valves must demonstrate high reliability across thousands of operational cycles under varying temperature and voltage conditions. The standard also specifies unique requirements for fire buried gate valves, mandating non-rising stem structures with extended stems and anti-corrosion coatings for underground installation. These buried valves must include T-wrench operating caps and utilize austenitic stainless steel for critical fasteners.
Testing methods
The standard outlines a comprehensive suite of testing procedures, including valve body strength tests conducted at 4 times the rated working pressure, and sealing performance tests at 2 times the rated pressure. It also details working cycle tests to verify long-term reliability, hydraulic friction resistance tests, and specific functional evaluations for solenoid and signal valves. Aging tests for non-metallic components are conducted according to referenced environmental testing standards.
FAQs
What products are regulated under GB 5135.6-2018?
This standard regulates various conventional valves used in automatic sprinkler systems, including fire gate valves, fire ball valves, fire butterfly valves, fire solenoid valves, fire check valves, and fire buried gate valves.
Are there any updates from the previous version of GB 5135.6?
The 2018 version introduces several updates, including modified material requirements, added connection method specifications, and new performance criteria for fire buried gate valves and fire check valves. Manufacturers previously certified under the 2003 version must re-evaluate their products for mandatory compliance.
How does GB 5135.6-2018 differ from ISO standards?
While it shares similarities in fundamental hydraulic testing concepts, GB 5135.6-2018 is tailored specifically for the Chinese fire protection market, featuring unique national requirements such as specific valve body coating colors (red) and distinct operational torque limits. It references its own set of national standards (e.g., GB/T 1048) rather than directly adopting ISO parameters.
The summary above provides a high-level overview of GB 5135.6-2018. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 5135.6-2018 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Product
- CCS
- C84
- ICS
- 13.220.10
- Competent department
- National Fire and Rescue Administration
- Technical committee
- National Technical Committee on Fire Protection of Standardization Administration of China
Relationships
Replaces:GB 5135.6-2003