Concealed Fire Sprinkler Zstd and Brass Fire Sprinkler Head

Product Description

Fire Sprinkler ZSTD of Mintai fire fighting equipment.
< 1>. Pop-up concealed brass Fire sprinkler head as important fire fighting system equipment, G1/2'(15mm) is available, more easily installed and more elegant. 5mm mercury bulb.

< 2>. Water sprinkler's working principle: Thermal expansion, fiberglass bulb automatically bursts when ambient temperature comes to 68 Celsius in fire hazard, then automatically put out a fire in a short time. 

< 3>. 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 fire 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. Of course, if a ceiling has been painted, and some paint gets on a bulb, it will not operate as it should.

< 4>. Concealed Fire Sprinklerwidely used in hotel, park, bar etc... and its working pressure is 1.2Mpa. Technical parameter as below.