Zhejiang, China
Business Type:
Trading Company
Business Range:
Manufacturing & Processing Machinery, Security & Protection
Management System Certification:
ISO 9001, ISO 14064
OEM/ODM Availability:
Yes
OEM/ODM Service
Sample Available

Water Fog Type Fire Sprinkler Head, Fire Sprinkler Head, Fire Fighting manufacturer / supplier in China, offering Water Fog Type Fire Sprinkler Head, 10gauge Bleach White Black PVC DOT Cotton Gloves, 10gauge Blench White Blue PVC Wave-DOT Glove and so on.

Diamond Member Since 2006
Audited Supplier

Water Fog Type Fire Sprinkler Head

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Min. Order: 2,000 Pieces
Port: Ningbo, China
Production Capacity: 50000PCS/Year
Payment Terms: L/C, T/T, Western Union
Connecting Thread: Dn15 Dn20
Glass Bulb Diameter: Open Type,Withour
Material: Natural Brass & Chrome Plated
Transport Package: Carton
Specification: CE ISO
Trademark: DSW

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Basic Info

Model NO.
ZSTM15 ZSTM20
Origin
China
HS Code
84819090
Water Fog Type Fire Sprinkler HeadSpecifications


Water fog fire sprinkler head
1. Water fog type
2. Brass or zinc alloy
3. ISO, CCC



Water fog fire sprinkler head

DEACRIPTION
Each closed-head sprinkler is held closed by either a heat-sensitive glass bulb (see below) or a two-part metal link held together withfusible alloy such as Wood's metal and other alloys with similar compositions. The glass bulb or link applies pressure to a pipe cap which acts as a plug which prevents water from flowing until the ambient temperature around the sprinkler reaches the design activation temperature of the individual sprinkler. Because each sprinkler activates independently when the predetermined heat level is reached, the number of sprinklers that operate is limited to only those near the fire, thereby maximizing the available water pressure over the point of fire origin.
The bulb breaks as a result of the thermal expansion of the liquid inside the bulb. The time it takes before a bulb breaks is dependent on the temperature. Below the design temperature, it does not break, and above the design temperature, it takes less time for higher temperatures. The response time is expressed as a response time index (RTI), which typically has values between 35 and 250 m½ S½ , where a low value indicates a fast response. Under standard testing procedures (135 ° C air at a velocity of 2.5 m/s), a 68 ° C sprinkler bulb will break within 7 to 33 seconds, depending on the RTI. [13] The RTI can also be specified in imperial units, where 1 ft½ S½ Is equivalent to 0.55 m½ S½ . The sensitivity of a sprinkler can be negatively affected if the thermal element has been painted.


Bulb Diameter
5mm glass bulb for standard response
3mm glass bulb for quick response
Response Time
15seconds in general for 5mm glass bulb
8seconds in general for 3mm glass bulb
Response Time Index RTI (m· S)0.5
87 for 5mm glass bulb

22- 25 for 3mm glass bulb

BUSSINESS TERMS

Payment terms: T/T(30% deposit advance, 70% against the copy of BL)
Delivery Time: Usually 15 days after the receipt of the deposit (depend on the actual quantity of customer)

Fire Extinguishers,Fire Fightings,Fire Safety,China Dry Chemical Powder Fire Extinguisher,Fire Equipment,China ABC Dry Chemical Fire Extinguishers,Fire Extinguisher,CO2 Fire Extinguisher,Foam Fire Extinguisher,Fire Fighting Equipment
Ningbo DSW International Co., Ltd. Established 1998, specialising in producing fire extinguishers, ABC dry powder fire extinguisher, ABC dry chemical fire extinguisher, CO2 fire extinguisher, sprinklers systems, fire hoses, fire hydrant& hose fitting brass die casting. 

DSW always keep quality, service and cost as core, it has passed ISO9001 International Quality system and European CE Quality system as well as the test of Union EN-3. In order to ensure hight quality of products, every piece fire extinguishers and accessories pass 15 step test, before every shipment, sending Test report and loading pictures to our customers. 

Through the efforts of both Domestic and International sales forces, DSW has emerged as the premier name for fire protection products. 80% of DSW products has been exported to different countries and regions, such as South America, Europe, Asian, Middle East etc.

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