ZSTX brass pendent fire fighting sprinkler

ZSTX brass pendent fire fighting sprinkler Technical Parameter  A fire sprinkler or sprinkler head is the component of a fire sprinkler system that discharges water when the effects of a fire have been detected, such as when a predetermined temperature has been exceeded. Fire sprinklers are extensively used worldwide, with over 40 million sprinkler heads fitted each year. In buildings protected by fire sprinklers, over 99% of fires were controlled by fire sprinklers alone.

Fire sprinklers can be automatic or open orifice. Automatic fire sprinklers operate at a predetermined temperature, utilizing a fusible element, a portion of which melts, or a frangible glass bulb containing liquid which breaks, allowing the plug in the orifice to be pushed out of the orifice by the water pressure in the fire sprinkler piping, resulting in water flow from the orifice. The water stream impacts a deflector, which produces a specific spray pattern designed in support of the goals of the sprinkler type (i.e., control or suppression). Modern sprinkler heads are designed to direct spray downwards. Spray nozzles are available to provide spray in various directions and patterns. The majority of automatic fire sprinklers operate individually in a fire. Contrary to motion picture representation, the entire sprinkler system does not activate, unless the system is a special deluge type.

Open orifice sprinklers are only used in water spray systems or deluge sprinklers systems. They are identical to the automatic sprinkler on which they are based, with the heat sensitive operating element removed.

Automatic fire sprinklers utilizing frangible bulbs follow a standardized color-coding convention indicating their operating temperature. Activation temperatures correspond to the type of hazard against which the sprinkler system protects. Residential occupancies are provided with a special type of fast response sprinkler with the unique goal of life safety.
Specification Of Fire Sprinkler  

Type	Upright		Pendent		Sidewall		Common		Concealed		ESFR
Model	ZSTZ		ZSTX		ZSTBS		ZSTP		ZSTDY		ZSTY
Nominal Diameter(mm)	DN15	DN20	DN15	DN20	DN15	DN20	DN15	DN20	DN15	DN20	DN20
Connecting Threaded(Inch)	1/2"	3/4"	1/2"	3/4"	1/2"	3/4"	1/2"	3/4"	1/2"	3/4"	3/4"
Flux Coefficient	80	115	80	115	80	115	80	115	80	115	11

Display ESFR Fire Sprinkler    ESFR (Early Suppression Fast Response) refers to both a concept and a type of sprinkler. "The concept is that fast response of sprinklers can produce an advantage in a fire if the response is accompanied by an effective discharge density--that is, a sprinkler spray capable of fighting its way down through the fire plume in sufficient quantities to suppress the burning fuel package." The sprinkler that was developed for this concept was created for use in high rack storage.

Early suppression fast response (ESFR) sprinkler heads were developed to take advantage of the latest fast-response fire sprinkler technology to provide fire suppression of specific high-challenge fire hazards. Prior to the introduction of these sprinklers, protection systems were designed to control fires until the arrival of the fire department.

Type	Upright	Pendent	Upright	Pendent
Model	ESFR-363/74℃ U	ESFR-363/74℃ P	ESFR-242/74℃ U	ESFR-242/74℃ P
Nominal Diameter (mm)	DN25(1")	DN25(1")	DN20(3/4")	DN20(3/4")
Connecting Thread (Inch)	R1"	R1"	R3/4"	R3/4"
K-Factor	363(25.4 @US)	363(25.4 @US)	242(16.8@US)	242(16.8@US)
Response element and temperature	Fusible alloy @ 74 ℃	Fusible alloy @ 74 ℃	Fusible alloy @ 74 ℃	Fusible alloy @ 74 ℃
Working pressure range	0.1-1.2Mpa	0.1-1.2Mpa	0.1-1.2Mpa	0.1-1.2Mpa
Max working pressure	1.2 Mpa	1.2 Mpa	1.2 Mpa	1.2 Mpa

    TY Model Fire Sprinkler 

Type	Upright		Pendent		Sidewall
Model	TY-ZSTZ		TY-ZSTX		TY-ZSTBS
Nominal Diameter(mm)	DN15	DN20	DN15	DN20	DN15	DN20
Connecting Threaded(Inch)	1/2"	3/4"	1/2"	3/4"	1/2"	3/4"
Flux Coefficient	80	115	80	115	80	115

 
  VK Model Fire Sprinkler  

Type	Upright	Pendent
Model	VK-ZSTZ	VK-ZSTX
Nominal Diameter(mm)	DN15	DN15
Connecting Threaded(Inch)	1/2"	1/2"
Flux Coefficient	80	80

 More Fire Sprinkler   Available Temperature Rating      Each closed-head sprinkler is held closed by either a heat-sensitive glass bulb (see below) or a two-part metal link held together with fusible 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 breaks, taking less time to break as temperature increases above the design threshold. The response time is expressed as a response time index (RTI), which typically has values between 35 and 250 m½s½, 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.The RTI can also be specified in imperial units, where 1 ft½s½ is equivalent to 0.55 m½s½. The sensitivity of a sprinkler can be negatively affected if the thermal element has been painted.

Maximum Ceiling Temperature	Temperature Rating	Temperature Classification	Color Code (with Fusible Link)	Liquid Alcohol in Glass Bulb Color
100°F / 38°C	135-170°F / 57-77°C	Ordinary	Uncolored or Black	Orange (135°F / 57°C) or Red (155°F / 68°C)
150°F / 66°C	175-225°F / 79-107°C	Intermediate	White	Yellow (175°F / 79°C) or Green (200°F / 93°C)
225°F / 107°C	250-300°F / 121-149°C	High	Blue	Blue
300°F / 149°C	325-375°F / 163-191°C	Extra High	Red	Purple
375°F / 191°C	400-475°F / 204-246°C	Very Extra High	Green	Black
475°F / 246°C	500-575°F / 260-302°C	Ultra High	Orange	Black
625°F / 329°C	650°F / 343°C	Ultra High	Orange	Black

    Company Information  We, Minnan Fire Fighting Equipment Factory. are dedicated manufacturer of a large variety of fire fighting equipment in Southeast China . Since its humble beginning in 2001, Minnan Fire has been developing to a holistic fire fighting solution provider that fully integrates throughout the whole production chain---a full range of fire fighting products included fire alarm system,fire sprinkler system,fire foam system, etc.we have whatever it takes to respond to customers’ individual circumstances and to deliver customer-specific solutions as well.

Our aim and sevice are people-oriented and eco-friendly, technically staffed and ethically based, quality-focused and CCC, ISO9001 & ISO14001 certified.Minnan Fire will be as ever maintaining its unique entrepreneurship, undertaking innovation to create safer living conditions for customers life.
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