GB27898.4-2025
Fixed water supply equipment used for fire-protection—Part 4: Gas driven fixed water supply equipment used for fire-protection
固定消防给水设备 第4部分：消防气体顶压给水设备
GB 27898.4-2025 is an upcoming mandatory Chinese national standard for Fixed water supply equipment used for fire-protection—Part 4: Gas driven fixed water supply equipment used for fire-protection. It appears in the Machinery compliance cluster with a product safety focus and has an implementation date of Nov 1, 2026.
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 gas driven fixed water supply equipment used for fire-protection, which utilizes compressed gas decompression to displace fire water from a pressure tank. It is mandatory for manufacturers producing this specific type of fire water supply equipment for the Chinese market. The standard does not apply to other types of fixed fire water supply equipment covered by different parts of the GB 27898 series.
Technical requirements
The standard specifies comprehensive requirements for the equipment's basic parameters, including minimum rated working pressure, maximum flow rate, and replacement water volume. It details the structural composition, requiring components like pressure tanks, pressure maintenance pump units, and a gas driven system. Manufacturers must ensure the gas driven system uses nitrogen and includes safety relief devices. It outlines strict control function requirements, covering pressure maintenance, fire operation state initiation (manual, mechanical, and automatic), and remote monitoring capabilities. The equipment must maintain pressure within defined tolerances during fire operation and intermittent water supply. The standard also mandates specific requirements for the pressure tank and accessories, including the installation of gas shut-off and exhausting units. Furthermore, it sets performance criteria for the control cabinet, including dual power supply switching and battery backup endurance.
Testing methods
Testing methods include checks for basic parameters, structural components, and appearance. Key functional tests involve control function tests (including remote monitoring simulation), water supply capability tests (measuring replacement and supplementary water volumes), and continuous operation tests. The standard also details specific tests for the gas driven system, such as pressure reducing valve strength, sealing, pressure adjustment, and high-pressure gas impact tests.
FAQs
What products are regulated under GB 27898.4-2025?
GB 27898.4-2025 regulates gas driven fixed water supply equipment used for fire-protection, which uses compressed gas to displace water from a pressure tank to supply fire water at a rated working pressure.
Are there any updates from the previous version of GB 27898.4?
Yes, this version replaces GB 27898.4-2011. Key updates include the addition of terms for concentrated and scattered decompression types, modified requirements for components and pressure maintenance, and the introduction of remote monitoring requirements.
What gas is specified for the gas driven system in this standard?
The standard specifies that the pressurized gas used in the gas driven system must be nitrogen, complying with the requirements of GB/T 8979.
The summary above provides a high-level overview of GB 27898.4-2025. 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 27898.4-2025 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Safety
- 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 27898.4-2011 (Current)