RASCO/Reliable® R1233, Model G, Horizontal Sidewall, 4.2K, SR, 1/2" NPT, Chrome, 286 Degree, GH37C, 5428212899, Fire Sprinkler Head alarm bell cage STI-1221A4X

STI-1221A4X

Unit Diameter:  4

Manufacturer Part Numbers:  ST02000000

Item:  Exit Sign Damage Stopper®

Rugged corrosion-resistant zinc head and body are phosphate treated and epoxy finished

RASCO/Reliable® R1233, Model G, Horizontal Sidewall, 4.2K, SR, 1/2" NPT, Chrome, 286 Degree, GH37C, 5428212899, Fire Sprinkler Head alarm bell cage STI-1221A4XReliable Model G Series sprinklers are standard response standard spray automatic sprinklers using a solder capsule thermal element. The solder is captured in the cylinder of the capsule by a stainless steel ball. When the solder melts, the ball moves into the cylinder allowing the thermal element to fall away from the sprinkler. When this occurs, the compressed strut and lever spring free from the sprinkler. System pressure then clears the waterway