GB5135.5-2018
Automatic sprinkler systems—Part 5: Deluge alarm valves
自动喷水灭火系统 第5部分：雨淋报警阀
GB 5135.5-2018 is a current mandatory Chinese national standard for Automatic sprinkler systems—Part 5: Deluge alarm valves. It appears in the Environment compliance cluster with a product safety focus and has an implementation date of Jan 1, 2019.
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 specifically to deluge alarm valves used within automatic sprinkler systems. It covers various structural types including push-rod, diaphragm, piston, butterfly, and temperature-sensing valves. Manufacturers of fire protection equipment and components entering the Chinese market must comply with these mandatory requirements. It does not apply to other types of sprinkler system components covered by different parts of the GB 5135 series.
Technical requirements
The standard mandates stringent material and structural criteria. Valve bodies and covers must possess corrosion resistance not lower than cast iron, while valve seats should match or exceed bronze. Components requiring movement must use specific corrosion-resistant alloys. The rated working pressure for these valves shall not be lower than 1.2 MPa. Functional requirements dictate that the valve must operate reliably across a specific pressure range without external interference preventing activation. Upon activation, the valve must open within 15 seconds (or 60 seconds for valves over 200mm in diameter). It also mandates an anti-reseat mechanism to ensure the valve remains open after activation until manually reset. Additionally, the standard specifies requirements for solenoid valves, rigid non-metallic parts (which must withstand aging tests), and rubber sealing components. Valves constructed with materials melting below 800°C must pass a fire resistance test.
Testing methods
The standard outlines several critical evaluations, including a valve body strength test under 4 times the rated working pressure, and a leak and deformation test at 2 times the rated pressure. Functional testing verifies operation across varying supply pressures and ensures proper alarm activation. Other key procedures include hydraulic friction resistance measurement, air and warm water aging tests for non-metallic parts, and a rigorous 15-minute fire resistance test at 800°C for eligible valve materials.
FAQs
What products are regulated under GB 5135.5-2018?
The standard regulates deluge alarm valves used in automatic sprinkler systems. It applies to various structural types such as push-rod, diaphragm, piston, butterfly, and temperature-sensing valves.
Are there any updates from the previous version of GB 5135.5?
The 2018 version introduces classifications and model designations, modifies requirements for corrosion resistance and hydraulic friction, and adds new requirements for solenoid valves and anti-reseat mechanisms.
How does GB 5135.5-2018 differ from international ISO standards?
While it shares the core objective of fire protection with ISO standards, GB 5135.5-2018 is tailored specifically for the Chinese market. It mandates specific local testing protocols and material grades that must be strictly followed for CCC certification.
The summary above provides a high-level overview of GB 5135.5-2018. 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 5135.5-2018 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 5135.5-2003