GB12514.1-2005
Fire couoling -- Part 1: General technical conditions for fire coupling
消防接口 第1部分：消防接口通用技术条件
GB 12514.1-2005 is a current mandatory Chinese national standard for Fire couoling -- Part 1: General technical conditions for fire coupling. It appears in the Construction compliance cluster with a product safety focus and has an implementation date of Apr 1, 2006.
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 various fire couplings, including fire hose interfaces, suction pipe interfaces, and interfaces configured on fire hydrants, fire pumps, fire water guns, and other fire equipment. It covers snap-type, insertion-type, and screw-type couplings, as well as reducing and special-shaped interfaces. It is not applicable to the connection force between the interface and the fire hose, which is regulated in separate hose standards.
Technical requirements
The standard specifies mandatory performance criteria for fire couplings. It dictates basic dimensions, appearance quality (free from scars, cracks, and sand holes), and specific limits for operating force and torque to ensure safe and efficient connection. Manufacturers must ensure their products meet these precise operational thresholds. It establishes strict sealing performance requirements, requiring no leakage under specific and nominal water pressures. The standard also outlines hydrostatic strength limits, demanding no visible cracks or fractures at 1.5 times the nominal pressure. Couplings must remain fully operational after these pressure tests. Additional mandatory requirements include spring fatigue life for insertion-type couplings, drop resistance from a 1.5m height, and corrosion resistance. Material specifications mandate the use of corrosion-resistant alloys, such as aluminum-silicon alloys and lead brass, with rubber seals made of oil-resistant rubber. Aluminum alloy castings must undergo anodizing or equivalent anti-corrosion treatment.
Testing methods
The standard outlines several key evaluation procedures: Dimensional and Visual Inspection using vernier calipers and thread gauges; Operating Force/Torque Test measuring the maximum force required for connection and disengagement; Hydrostatic Seal and Strength Tests pressurizing the couplings to 1.5x nominal pressure; Spring Fatigue Life Test using a specialized testing instrument; Drop Test conducted from a height of 1.5 meters onto a concrete base; and a Salt Spray Corrosion Test lasting 96 hours. These tests collectively verify the operational reliability and durability of the fire couplings under harsh conditions.
FAQs
What products are regulated under GB 12514.1-2005?
This standard regulates various fire couplings, including fire hose interfaces, suction pipe interfaces, and interfaces configured on fire hydrants, fire pumps, fire water guns, as well as reducing couplings and blank caps. It applies to snap-type, insertion-type, and screw-type couplings.
Are there any updates from the previous version of GB 12514.1-2005?
The updated version added types for insertion-type (card-style) and screw-type couplings. It also removed the requirement for the connection force between the coupling and the fire hose, which is planned to be included in future revisions of fire hose standards.
How does GB 12514.1-2005 differ from international ISO standards?
This standard primarily references technical standards from the United States (ANSI/UL236) and Japan (Ministry of Home Affairs Ordinance No. 5). Engineers should review the specific material and testing parameters to ensure alignment with corresponding ISO requirements.
The summary above provides a high-level overview of GB 12514.1-2005. To ensure complete compliance for your fire fighting equipment entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 12514.1-2005 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Product
- CCS
- C84
- ICS
- 13.220.20
- Competent department
- National Fire and Rescue Administration
- Technical committee
- National Technical Committee on Fire Protection of Standardization Administration of China