GB5135.4-2003

Automatic sprinkler system--Part4: Dry pipe valves

自动喷水灭火系统第4部分: 干式报警阀

GB 5135.4-2003 — действующий обязательный национальный стандарт Китая: Automatic sprinkler system--Part4: Dry pipe valves. Отрасль: Строительство. Тема: Безопасность продукции. Дата вступления в силу: 1 мая 2004 г..

Применимость зависит от продукции, схемы сертификации, уведомлений компетентных органов и переходных правил. Закажите перевод или проверьте источник, прежде чем использовать эту запись в решениях по соответствию.

Обзор требований

Этот обзор пока доступен только на английском языке.

Область применения

This standard applies to dry pipe valves used in automatic sprinkler systems for fire protection. It covers the requirements, testing methods, and inspection rules for these specific control valves. It is not applicable to other accessories beyond the dry pipe valve itself.

Технические требования

The standard specifies the appearance quality, nominal diameters, and rated working pressure (which must be no less than 1.2 MPa) for dry pipe valves. It mandates that body and cover materials have corrosion resistance not lower than cast iron, and moving parts must use materials like bronze or austenitic stainless steel. It outlines strict requirements for leakage and deformation under various pressure conditions, ensuring the valve prevents water from leaking from the supply side to the outlet side in the set position. The valve must function correctly within a specified pressure range and trigger alarm devices. The standard also details requirements for rigid non-metallic parts and valve seat seals, including aging resistance and tensile stress-strain characteristics. Additionally, it specifies fire resistance criteria for valves made with materials having a melting point below 800°C, requiring them to withstand an 800°C fire test for 15 minutes.

Методы испытаний

Testing methods include appearance inspection, working cycle tests (5000 cycles for springs and diaphragms), and aging tests for non-metallic parts (air and warm water aging). It also covers valve body strength tests, leakage and deformation tests, and hydraulic friction loss tests. Functional tests evaluate the valve's operation, anti-reseat mechanisms, and alarm triggering, while a fire resistance test assesses performance under high temperatures.

Частые вопросы

What products are regulated under GB 5135.4-2003?

It regulates dry pipe valves used in automatic sprinkler systems, specifically differential-type and mechanical-type dry pipe valves.

What is the minimum rated working pressure required by this standard?

The rated working pressure of the dry pipe valve must be no less than 1.2 MPa.

Does GB 5135.4-2003 reference international standards?

Yes, the standard primarily references ISO 6182.3 for the requirements and test methods of dry pipe valves in automatic sprinkler systems.

The summary above provides a high-level overview of GB 5135.4-2003. 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 5135.4-2003 today to access all detailed parameters, tables, and testing procedures.

Подсказки по применимости

Тип: Продукция
CCS: C83
ICS: 13.220.20
Компетентное ведомство: National Fire and Rescue Administration
Технический комитет: National Technical Committee on Fire Protection of Standardization Administration of China

Связи

Заменён на:GB 5135.4-2025 (Вступает в силу)