TUNA UL & CUL Listed 1/2″ NPT Concealed Fire Sprinkler Head 155°F (68°C) Concealed Pendent Spray K80 Standard Response for Automatic Fire sprinkler System Concealed Head with White Cover Plate

• UL & CUL Certified-UL & CUL listed EX6430, 1/2 inch NPT (National Pipe Thread) American thread fire sprinkler heads. Built for dependable fire protection and rigorous quality standards, the glass compression bulb activates automatically at the rated threshold, delivering a consistent hemispherical spray pattern. Ideal for fire sprinkler heads bulk orders by contractors and property managers who require code-compliant, inspector-approved fire safety for residential and commercial installations
• Technical Specifications-Temperature Rating: 155°F (68°C); Discharge Coefficient: K=5.6(U.S) /80(Metric); Nominal Orifice Size: 1/2 inch(15mm). Precision engineered for reliable automatic fire suppression, the sprinkler head delivers consistent performance across standard wet-pipe systems. The ordinary temperature rating suits most indoor environments including offices, hotels, retail spaces, apartments, and warehouses. Designed for new construction, renovation, and replacement projects alike
• Rigorously Factory Tested-Maximum Working Pressure: 175psi(12bar); Min. Operating Pressure: 7psi (0.48bar); Factory Hydrostatic Test: 100%@ 500psi (34.5bar). Every unit undergoes rigorous factory testing to guarantee leak-free performance. The wide operating pressure range ensures compatibility with most residential and commercial fire sprinkler systems. Engineered for long-term durability in Light-Hazard and Ordinary-Hazard occupancies, with dependable activation when it matters most
• Premium Materials-Frame: Bronze; Button: Brass/Copper; Sealing Assembly: Beryllium Nickel with Teflon; Bulb: Glass Compression; Screw: Bronze; Deflector: Copper. All-metal construction delivers corrosion resistance and long-term structural integrity. The beryllium nickel with Teflon seal ensures a leak-free connection, while the glass compression bulb provides precise thermal activation. The white cover plate blends seamlessly with any ceiling finish for a clean, professional appearance
• Easy Installation: The cover plate and mounting cup assembly with separable two-piece design allows sprinkler installation and system pressure testing before ceiling installation or finish coating, saving valuable time on site. Provides vertical adjustment to accommodate pipe drop variations, reducing waste and rework. The low-profile flat cover plate creates a clean ceiling appearance. Ceiling panels are removable for service access without shutting down the fire system or removing sprinklers

During a fire conditions, the thermal-sensitive liquid in the glass bulb expands, causing the bulb to shatter, releasing the button and spring seal assembly. Water flowing through the sprinkler orifice strikes the sprinkler deflector, forming a uniform spray pattern to extinguish or control the fire.

Temperature Rating: 155°F (68°C)

Discharge Coefficient: K=5.6(U.S) /80(Metric)

Nominal Orifice Size:1/2″(15mm)

Maximum Working Pressure:175psi(12bar)

Min. Operating Pressure: 7psi (0.48bar)

Factory Hydrostatic Test: 100%@ 500psi (34.5bar)

NPT: National Pipe Tapered is common in plumbing and some industrial uses. Sometimes referred to as pipe thread because PVC pipe and schedule 40 pipe are typically threaded in NPT. As its name implies this is a tapered thread so that the outside diameter of the male (ODM) gets smaller towards the end of the fitting and the inside diameter of the female narrows with depth. As the two fittings are threaded together the opposite tapers force thread friction and makes the seal without the use of a gasket.