GB5135.17-2011

Automatic sprinkler system - Part 17：Pressure reducing valves

自动喷水灭火系统第17部分：减压阀

GB 5135.17-2011 é uma norma nacional chinesa obrigatória vigente: Automatic sprinkler system - Part 17：Pressure reducing valves. Setor: Construção. Foco: Segurança de produtos. Entrada em vigor: 1 de nov. de 2011.

A aplicabilidade depende do escopo do produto, da via de certificação, dos avisos da autoridade competente e das regras de transição. Solicite uma tradução ou verifique a fonte antes de usar este registro em uma decisão de conformidade.

Visão geral de conformidade

Esta visão geral está disponível por enquanto apenas em inglês.

Escopo e aplicabilidade

GB 5135.17-2011 applies to pressure reducing valves specifically used within automatic sprinkler systems. It covers both direct-acting and pilot-operated types of valves. This standard is mandatory for manufacturers producing fire protection valves for the Chinese market. It does not apply to valves used in general industrial or domestic water supply applications outside of fire suppression systems.

Requisitos técnicos

The standard mandates that valve bodies and covers must be made from materials with corrosion resistance not lower than cast iron, while valve seats must meet or exceed the corrosion resistance of bronze. Specific physical performance parameters for rubber diaphragms are strictly regulated, including tensile strength and compression set. The nominal diameter range for valves is defined from 40mm to 300mm, with a minimum rated working pressure of 1.2MPa. Structural requirements dictate the integration of safety relief valves, control valves, and pressure adjustment devices. Filter screens must be installed in control circuits where the flow diameter is 6mm or less to prevent clogging. Connection types must comply with relevant Chinese standards for flanges, grooves, or threads, such as GB/T 17241.6 and GB 5135.11. The standard sets strict performance criteria for pressure characteristics and flow characteristics. It defines acceptable deviation limits between the measured outlet pressure and the set pressure under varying flow rates and inlet pressures. Valves must operate normally without abnormal vibration or destructive cavitation during continuous operation and working cycle tests.

Métodos de ensaio

The standard outlines several critical testing procedures, including the valve body strength test, which subjects the valve to 4 times the rated working pressure. Sealing performance is verified under 2 times the rated working pressure to ensure zero leakage at the valve seat. Additionally, a working cycle test of 5000 cycles and a 90-minute continuous operation test are mandated to verify long-term reliability. A warm water aging test at 87°C for 90 days is also required for components with anti-corrosion treatments.

Perguntas frequentes

What products are regulated under GB 5135.17-2011?

This standard regulates pressure reducing valves used specifically in automatic sprinkler systems, covering both direct-acting and pilot-operated types. It does not apply to industrial water supply valves outside of fire protection systems.

What are the key compliance requirements for pressure reducing valves under this standard?

The standard specifies comprehensive requirements including material corrosion resistance, structural integrity of components like diaphragms and control valves, strength and sealing performance, and pressure/flow characteristics. Manufacturers must ensure their products meet these specific performance and reliability benchmarks.

How does GB 5135.17-2011 address testing and reliability?

The standard includes rigorous testing such as a 5000-cycle working reliability test, a 90-day warm water aging test for anti-corrosion treatments, and continuous operation tests. These procedures ensure long-term durability and stable pressure regulation under fire suppression conditions.

The summary above provides a high-level overview of GB 5135.17-2011. 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 5135.17-2011 today to access all detailed parameters, tables, and testing procedures.

Indicações de aplicabilidade

Tipo: Produto
CCS: C84
ICS: 13.220.20
Órgão competente: National Fire and Rescue Administration
Comitê técnico: National Technical Committee on Fire Protection of Standardization Administration of China