Wholesale Automatic Fire Fighting Concealed Fire Sprinkler Head with Long Warranty Sprinkler

Product Description

Wholesale Automatic Fire Fighting Concealed Fire Sprinkler Head with Long Warranty Sprinkler

Product Description

Introduction:
Sprinkler is an important part of wet-type auto spraying system. It is usually installed inside the building and structures with light fire danger, medium fire danger and heavy fire danger, such as workshop, warehouse, hotel, shop, recreational place, hospital, cinema, office building and garage.
The sprinkler is composed of sprinkler frame, sealant and glass bulb. It is to be installed in the protective district via ductwork, acting as a fire detector and auto sprayer. In case of fire inside the protective district, the atmosphere temperature rises up and the liquid inside the glass bulb expands after being heated and explodes after reaching the operating temperature of the glass ball. The sealant drops and the sprinkler sprays to the protective district for fire extinguishments subject to the preset shape of spraying.
 

Type	Upright / Pendent /Sidewall/Conventional/Concealed
Material	Brass/Zinc
Surface finish	Natural brass or Chrom Plated or White Color Coated
Thread diameter	1/2" NPT/BSPT (DN15)	3/4" NPT/BSPT (DN20)
Flow characteristic coefficient	80L/min(K=5.6)	115L/min(K=8.0)
Glass bulb diameter	5mm(Standard Response) or 3mm(Quick Response)
Certificates	ISO,CCC,UL
Max working pressure	1.2Mpa (175Psi/12 Bar)
Factory Hydrostatic Test	100%, 3.0Mpa

Product Description
The glass bulb sprinkler head is an important component of a sprinkler system,  the mechanism is that the glass bulb is sensitive to heat, when the surroundings temperature reaches a certain point,   the glass bulb will break and activate the sprinkler to spray water for fire extinguishing. 

The concealed sprinkler head is usually installed at places with luxurious decoration and beautiful appearance,such as antechamber, meeting room, shopping mall, hotel, and recreational center, etc. It can be concealed in the ceiling completely. The color of the cover plate can match with ceiling to make the installed hole hue harmonious.
 

Our Advantages

 

Sprinklers can be used to detect fires,and through automatic sprinkler to control and extinguish fires. 
Automatic sprinkler system is the main components,It's widely used in high-rise buildings,hotels,shopping malls,factories,warehouses and other buildings,to meet the various hazards Level of protection requirements.





Installation,Usage and Maintenance:
During installation, should pay attention not to damage the bulb to avoid affect the thermal performance. In the process of wrench and twist, do not use spanner to wrench the supporting arm to deformation and affect thesealing performance (note: the bulb temperature can be chosen according to the needs of users)
Product Feature:
It can not only detect the fire, but also extinguish the fire by spraying water.



1. The installation distance of the spray head is generally 3.6 meters in diameter and 1.8 meters in radius;
2. The maximum protection area of the sprinkler is 12.5 square;
3. The spray head should not be less than 300mm from the wall;
4. When the distance between the spray head and the ceiling is greater than 80m, and there are combustibles in the ceiling, the    upper and lower sprays are required. 

 

FAQ

1. What is a Fire Sprinkler Pendent Sprinkler Head?
A Fire Sprinkler Pendent Sprinkler Head is an automatic fire suppression device designed for installation on the branch line of a wet or dry pipe fire sprinkler system. As a "pendent" type, it is installed hanging down from the piping (typically through a finished ceiling), with its deflector positioned to optimally distribute water downward and sideways upon activation.

2.  How can I request a quotation or datasheet?
For a compliant and accurate quote, please specify:

Desired Certification (UL, FM, CE, etc.)

Temperature Rating & K-Factor

Thread Size (e.g., 1/2" NPT, 15mm BSP)

Finish/Coating

Estimated Annual Quantity

3.Can you provide OEM/private label services?
We are a leading OEM manufacturer and can provide:

Custom branding on the frame.

Private label packaging and manuals.

Product customization to meet specific project or regional standards.

4. What is your MOQ and lead time?
Standard Models: MOQ 1,000 pieces.

Custom/OEM Projects: MOQ negotiable, typically 5,000 pieces.

Lead Time: 30-60 days for certified products, depending on quantity and certification requirements.

5. What is the Response Time Index (RTI)?
The RTI measures how quickly the sprinkler's heat-responsive element (bulb or link) activates.

Standard Response (SR): RTI ≥ 80 (m·s)^0.5. For general applications.

Quick Response (QR): RTI ≤ 50 (m·s)^0.5. Required in light hazard occupancies (e.g., offices, hotels, hospitals) for faster activation, reducing fire spread and life safety risk.
Our product datasheets specify the RTI and response type.

6. What materials and finishes are used?
Body & Frame: Bronze Alloy (C84400/C85700) is standard. Stalless Steel (303/316) and Chrome-Plated Brass are available for corrosive or aesthetic applications.

Deflector: Brass or Stainless Steel, precision-machined for optimal water distribution.

Heat Sensor: Glass Bulb (colored alcohol) or Fusible Link (eutectic solder).

Finish: Polished Chrome, Brass (natural), White Epoxy Coating, or Custom Powder Coat (for concealed models).

7. What is the working pressure range?
Maximum Working Pressure: Typically 175 psi (12 bar) or 300 psi (21 bar) for standard models. High-pressure models available.

Minimum Operating Pressure: Must meet the flow and density requirements of the design. Typically not less than 7 psi (0.5 bar).

8. Are they suitable for both wet and dry pipe systems?
Wet Pipe Systems: Yes. Standard pendent sprinklers are used in wet systems.

Dry Pipe Systems: Dry Pendent Sprinklers are a specific type designed for areas subject to freezing (like attics or parking garages). They have a longer barrel and a seal to prevent water from entering the branch line until activated. Please specify if you need a Dry Pendent model.

9. What is the coverage area?
The maximum protection area per sprinkler is strictly governed by the design standard (e.g., NFPA 13, EN 12845) and hazard classification.

Light Hazard: Up to 225 sq.ft. (21 m²) for standard spacing.

Ordinary Hazard: Up to 130 sq.ft. (12 m²).

Actual spacing and coverage must be determined by a licensed fire protection engineer.

10. Do you offer decorative or concealed sprinkler heads?
Yes. We provide aesthetic solutions:

Recessed Concealed Sprinklers: Installed flush with the ceiling; a cover plate drops away during fire.

Flush Pendent Sprinklers: Slightly recessed for a low-profile look.

Decorative Coated Sprinklers: Can be painted or coated to match ceiling color (with approved methods).

 

Packaging & Shipping

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