Gold Member Since 2006
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Ningbo DSW International Co., Ltd.

Cheap Fire Sprinkler, Fire Sprinkler Parts, Pendent Fire Sprinkler manufacturer / supplier in China, offering Cheap Fire Sprinkler, Pendent Fire Sprinkler, Sp114s Emergency Exit Light, China Security Alarm Outdoor Siren From Dsw China and so on.

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Cheap Fire Sprinkler, Pendent Fire Sprinkler

FOB Price: US $0.43 / Piece
Min. Order: 5,000 Pieces
Min. Order FOB Price
5,000 Pieces US $0.43/ Piece
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Production Capacity: 50000PCS/Year
Transport Package: Carton
Payment Terms: L/C, T/T, Western Union

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Basic Info
  • Model NO.: ZSTX15 ZSTX20
  • Size: Dn15 Dn20
  • Operating Temp: 68/79 Degree, etc
  • Specification: CE ISO
  • Type: Pendent
  • Celsius Material: Brass or Chrome Finished
  • Trademark: DSW
  • Origin: China
Product Description
Quick Details
Place of Origin: China (Mainland)
Model: ZSTX15 ZSTX20
Size: DN15 DN20
Color: Chrome, white, blue
Type: Pendent
The critical temperature: 68/79/93 Degrees Celsius
Material: Brass or Chrome Finished
Packing: Export design carton
Packaging Details: Cheap fire sprinkler, fire sprinkler parts is wrapped with 200pcs in one carton box in general.
Delivery Detail: Within 15days after payment received

Cheap fire sprinkler, fire sprinkler parts
Pendent fire sprinkler
Style: Pendent
Operating temp.: 68/79 degree, etc
Material: Brass, zinc alloy
Size: 1/2" (15mm) 3/4" (mm)


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.
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