Standard Spray Sprinklers

FM APPROVED SPRINKLERS

Certified by FM Global — the world's leading industrial risk management body whose standards are adopted in 80+ countries. Required by most international insurers, engineering consultants, and high-value industrial facilities. Brass body, corrosion-resistant construction, 1,000-hour salt spray tested per ASTM B117.

FM Approved K5.6 Upright Sprinkler

Standard response pendent sprinkler in brass, FM certified. Optimized water distribution pattern for warehouses, high-rise buildings, and industrial facilities.

NR3151 / NR3131

FM Approved K5.6 Pendent Sprinkler

Upright configuration for installations where piping runs above the sprinkler. Quick-response glass bulb triggers instant activation at defined temperature threshold.

NR3251 / NR3231

FM Approved K5.6 Sidewall Sprinkler

Horizontal sidewall version for spaces where ceiling mounting is not feasible. Ideal for corridors, hotel rooms, and spaces with architectural constraints.

NR3351 / NR3331

Model	Type	K Factor	Thread	Bulb Size	Temperature Rating	Frame Finish	Certification
NR3251	Pendent	K5.6 (K80)	BSP / NPT ½"	5 mm	68°C	Chrome / Brass	FM Approved
NR3231	Pendent	K5.6 (K80)	BSP / NPT ½"	3 mm	68°C	Chrome / Brass	FM Approved
NR3151	Upright	K5.6 (K80)	BSP / NPT ½"	5 mm	68°C	Chrome / Brass	FM Approved
NR3131	Upright	K5.6 (K80)	BSP / NPT ½"	3 mm	68°C	Chrome / Brass	FM Approved
NR3351	Sidewall	K5.6 (K80)	BSP / NPT ½"	5 mm	68°C	Chrome / Brass	FM Approved
NR3331	Sidewall	K5.6 (K80)	BSP / NPT ½"	3 mm	68°C	Chrome / Brass	FM Approved

CCC Certified Standard Spray Sprinklers

Compliant with GB 5135 (China National Standard for automatic sprinklers). Mandatory for all fire protection installations in Chinese domestic construction — residential, commercial, industrial, and public buildings. Full ZST-series available in all standard configurations.

ZSTZ Upright Sprinkler

Upright sprinkler designed for installations where branch piping is located below the sprinkler. Suitable for warehouses, factories, industrial facilities, and other exposed-piping fire protection systems. Available in standard-response and quick-response configurations.

ZSTZ-15 / 20

ZSTX Pendent Sprinkler

Pendent sprinkler for ceiling-mounted fire protection systems in commercial, residential, and public buildings. The glass bulb activates at the rated temperature, allowing water to discharge downward in a uniform spray pattern.

ZSTX-15 / 20

ZSTBS Sidewall Sprinkler

Horizontal sidewall sprinkler designed for areas where ceiling installation is impractical. Ideal for corridors, hotel rooms, offices, hospitals, and residential spaces. Provides effective wall-mounted fire protection while maintaining a clean ceiling appearance.

ZSTBS-15 / 20

Model	Sprinkler Type	Thread Size	Temperature Rating (°C)	Response Type	Certification
ZSTZ-15 / 20	Upright Sprinkler	DN15 / DN20	57 / 68 / 79 / 93	Standard Response / Quick Response	CCC / GB 5135
ZSTX-15 / 20	Pendent Sprinkler	DN15 / DN20	57 / 68 / 79 / 93	Standard Response / Quick Response	CCC / GB 5135
ZSTBS-15 / 20	Sidewall Sprinkler	DN15 / DN20	57 / 68 / 79 / 93	Standard Response / Quick Response	CCC / GB 5135

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Reliable and Cost-Effective Standard Spray Sprinkler Solutions

Reliable Spray. Proven Protection.

Reliable Performance and Design Flexibility

Standard spray sprinklers are engineered to deliver reliable fire suppression performance across a wide range of building types. Available with multiple K-factors, temperature ratings, surface finishes, and connection types, these sprinklers allow fire protection engineers to precisely match system requirements with site-specific fire risks and environmental conditions.
Their proven spray pattern ensures uniform water distribution, making them suitable for light, ordinary, and extra hazard occupancies in commercial, industrial, and residential applications.

Cost-Effective Fire Protection with International Compliance

Designed with a simple and stable operating mechanism, standard spray sprinklers provide cost-effective fire protection solutions without compromising reliability. Their durable construction supports long-term operation in wet pipe, dry pipe, pre-action, and deluge sprinkler systems.
Manufactured in accordance with recognized international fire protection standards, these sprinklers meet strict quality and performance requirements, ensuring consistent activation, mechanical durability, and extended service life in demanding fire protection environments.

Ca-Fire Protection Co.,Ltd is one of the most professional standard spray sprinklers manufacturers and suppliers in China, specialized in providing high quality products and service. We warmly welcome you to wholesale customized standard spray sprinklers at competitive price from our factory.

Pendent Standard Fire Sprinkler