GB25202-2010

Foam nozzle

泡沫枪

GB 25202-2010 est une norme nationale chinoise obligatoire en vigueur : Foam nozzle. Secteur : Environnement. Thème principal : Sécurité des produits. Entrée en vigueur : 1 mars 2011.

L’applicabilité dépend du périmètre du produit, de la voie de certification, des avis des autorités et des règles de transition. Demandez une traduction ou vérifiez la source avant d’utiliser cette fiche pour une décision de conformité.

Aperçu de conformité

Cet aperçu n’est actuellement disponible qu’en anglais.

Champ d’application

This standard applies to various types of foam nozzles that use foam mixture as the spraying medium, primarily utilized in firefighting and fire suppression systems. It covers low-expansion, medium-expansion, and combined low-medium expansion foam nozzles. This standard is not applicable to foam nozzles used in compressed air foam systems (CAFS). It is essential for manufacturers of firefighting equipment to ensure compliance.

Exigences techniques

The standard specifies comprehensive performance and design criteria for foam nozzles. Chapter 5 of the standard is mandatory, outlining critical parameters such as appearance quality, basic performance parameters, and material requirements. Manufacturers must ensure that components in direct contact with the foam liquid are made of corrosion-resistant materials like copper or stainless steel. It establishes strict limits for sealing performance and hydrostatic strength, requiring no leakage or permanent deformation under specified test pressures. Additionally, the standard mandates durability tests including drop performance, corrosion resistance, and continuous spray impact resistance to ensure operational reliability during emergencies. For self-priming foam nozzles, the standard requires a reliable anti-backflow device on the suction line. For combined nozzles, clear marking and reliable switching between different expansion ratios are mandated. Interface types and dimensions must comply with the relevant GB 12514 series standards.

Méthodes d’essai

The standard outlines specific testing procedures to verify compliance: - Basic Performance Test: Measures range, flow rate, expansion ratio, and drainage time under rated working pressure. - Sealing and Hydrostatic Strength Test: Pressurizes the nozzle to check for leaks and structural integrity. - Drop and Corrosion Resistance Test: Evaluates physical durability and resistance to environmental degradation, referencing methods from GB 8181-2005. - Spray Impact Test: Assesses structural stability under continuous high-pressure spraying.

Questions fréquentes

What products are regulated under GB 25202-2010?

It regulates portable foam nozzles using foam mixture as the extinguishing agent, including low-expansion, medium-expansion, and combined types, but excludes those for compressed air foam systems.

Are the technical requirements in GB 25202-2010 mandatory?

Yes, Chapter 5 of the standard, which covers performance requirements, materials, and structural integrity, is mandatory for compliance.

What material requirements are specified for foam nozzles?

Components directly contacting the foam liquid must be manufactured from corrosion-resistant materials such as copper or stainless steel.

The summary above provides a high-level overview of GB 25202-2010. 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 25202-2010 today to access all detailed parameters, tables, and testing procedures.

Indications d’applicabilité

Type: Produit
CCS: C84
ICS: 13.220.10
Autorité compétente: National Fire and Rescue Administration
Comité technique: National Technical Committee on Fire Protection of Standardization Administration of China