GB5135.1-2019
Automatic sprinkler system—Part 1: Sprinklers
自动喷水灭火系统 第1部分：洒水喷头
GB 5135.1-2019 is a current mandatory Chinese national standard for Automatic sprinkler system—Part 1: Sprinklers. It appears in the Environment compliance cluster with a product safety focus and has an implementation date of Jul 1, 2020.
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
GB 5135.1-2019 applies to sprinklers used in automatic sprinkler systems, including standard coverage and Extended Coverage (EC) sprinklers. It covers various types such as pendent, upright, sidewall, flush, recessed, and concealed sprinklers. This standard does not apply to Early Suppression Fast Response (ESFR) sprinklers, domestic sprinklers, special application sprinklers, or on/off sprinklers, which are regulated by other parts of the GB 5135 series.
Technical requirements
This standard specifies comprehensive performance and construction requirements for sprinklers. It mandates that sprinklers must be designed to prevent easy adjustment, disassembly, or reassembly, and sets strict tolerances for mass deviation. The standard defines requirements for nominal flow coefficients, interface threads, and color-coding based on operating temperatures. Manufacturers must ensure that the sealing structure of the water outlet does not use rubber seals. The standard outlines critical hydraulic and thermal performance criteria. This includes water pressure sealing and hydrostatic strength integrity, water distribution patterns, and flow coefficient limits. It sets precise parameters for static operating temperatures and dynamic thermal response, categorizing sprinklers into quick response, special response, and standard response based on their Response Time Index (RTI). Furthermore, the standard requires sprinklers to withstand various mechanical and environmental stresses. This encompasses resistance to water impact, fatigue strength, thermal stability, vibration, mechanical impact, collision, rolling, and freezing. Sprinklers must also demonstrate robust corrosion resistance against ammonia, magnesium chloride, sulfur dioxide/carbon dioxide, salt spray, and humid gases. Finally, it defines specific fire suppression performance criteria, including wood crib and corrugated box fire tests for specific flow coefficients.
Testing methods
The standard details rigorous testing procedures to verify compliance. Key tests include hydrostatic strength and sealing tests to ensure structural integrity under pressure, and flow coefficient measurements under varying pressures. Water distribution tests are conducted in specialized laboratory setups using collect boxes to measure discharge density. Dynamic thermal response is evaluated using wind tunnels to determine the RTI. Additionally, the standard outlines procedures for environmental endurance tests, such as salt spray exposure, stress corrosion, and extreme temperature cycling, alongside full-scale fire suppression tests using wood cribs and corrugated paper boxes.
FAQs
What products are regulated under GB 5135.1-2019?
GB 5135.1-2019 applies to sprinklers used in automatic sprinkler systems, including standard coverage and Extended Coverage (EC) sprinklers. It does not apply to ESFR sprinklers, domestic sprinklers, special application sprinklers, or on/off sprinklers.
Are there any updates from the previous version of GB 5135.1?
The 2019 version replaces GB 5135.1-2003 and GB 5135.12-2006. Key updates include the addition of requirements for mass deviation, sealing structures, rolling resistance, freezing performance, and specific EC sprinkler performance criteria. It also introduces new corrosion resistance tests using magnesium chloride and sulfur dioxide/carbon dioxide.
How does GB 5135.1-2019 differ from ISO standards?
GB 5135.1-2019 was drafted with reference to ISO 6182-1:2014. While the core technical framework and testing philosophies are closely aligned with the ISO standard, GB 5135.1 incorporates specific Chinese national requirements, such as mandatory model designations and unique testing procedures for the local market.
The summary above provides a high-level overview of GB 5135.1-2019. 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 5135.1-2019 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 5135.1-2003, GB 5135.12-2006