Zstdy Dn15 Concealed Fire Sprinkler Heads

• Customization: Available
• Sprinkler Installation: Upright/Pendent/Sidewall
• Sprinkler Head Type: Closed
• Model NO.: ZSTDY
• Alarm Valve Type: Wet Alarm Valve
• Automatically Opened and Closed Repeatedly: Can′t Automatically Opened and Closed
• Open Fire Sprinkler System Type: Water Spray System
• Closed Fire Sprinkler System: Wet Fire Sprinkler System
• Dry Alarm Valve Type: Differential Type
• Wet Alarm Valve Structure: Butterfly Valve Type
• Alarm Valve Diameter: 80mm-250mm
• Nozzle Flow Coefficient: 80L/Min or 115L/Min
• Deluge Valve Type: Lever Type
• Name: Fire Sprinkler
• Norminal Diameter(mm): Dn15/Dn20
• Thread Standard: NPT/BSPT
• Material: Brass/Zinc
• Surface Finish: Chrome/Natural Brass/White
• Temperature Rating: 57/68/79/93/141/182 Degree
• Response: Standard/Quick
• K-Factor: 5.6(80)/8.0(115)
• Working Pressure: 1.2MPa/175psig
• Transport Package: Standard Export Package
• Specification: 1/2 Inch or 3/4 Inch
• Trademark: SINCO/OEM
• Origin: Quanzhou, Fujian
• HS Code: 8424
• Production Capacity: 150000pieces/Month

Product Description

ZSTDY Dn15 concealed fire sprinkler heads

Introduction:
Fire 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.
Technical parameters:

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 (175Psig/12 Bar)
Factory Hydrostatic Test	100%, 3.0Mpa

Fire sprinkler photoes:



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