Zinc Alloy Fire sprinkler, 1/2" and 3/4"

1) Size: 1/2''(DN15) / 3/4''(DN20)
2) Working pressure: 1.6MPa / 16bar / 235psi
3) Material: Zinc Alloy
4) Type: Pendent / Upright
5) Temperature: 68℃
6) Glass bulb: standard respond
7) K factor: DN15=5.6gpm/psi½(80 lpm/bar½); DN20=8gpm/psi½(115 lpm/bar½)
8) Thread: BSP R1/2" / BSP R3/4"
9) Surface colour: chrome