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Technical Specifications Sprinkler Temperature Ratings <br /> Style:Flat Concealed Pendent 165°F(74°C) <br /> Threads:1/2"NPT or ISO 7-1 RI/2 212°F(100°C) <br /> Nominal K-Factor:2.8(40 metric) Sensitivity <br /> Max.Working Pressure:175 psi(12 bar) (See Table B) <br /> Material Specifications Cover Plates <br /> Fusible Link:Beryllium Nickel Model G4/G5 <br /> Sprinkler Body:Brass Alloy Model G4/G5 QR Gasket(cULus only) <br /> Levers:Bronze Alloy <br /> Model G4/G5 SR Gasket <br /> Yoke:Brass Alloy <br /> Cover Plate Finishes <br /> Sealing washer:Nickel with PTFE <br /> Load Screw:Bronze Alloy (See Table I) <br /> Towers:Copper Alloy Sprinkler Wrench <br /> Pins:Stainless Steel Model W3 <br /> Deflector:Bronze Alloy Model FC <br /> Cup:Steel Listings and Approvals <br /> cULus Listed(Light Hazard only) <br /> FM Approved <br /> Model G5-28 Sprinkler Components and Dimensions' <br /> 2-5/16" <br /> (58 mm) <br /> Dia. <br /> Threads <br /> Body <br /> Cup— <br /> Ceiling <br /> 43-5/16"(84 <br /> ToweFusible Link 3/4"(19 mm)Max. <br /> Deflector(retracted) .; l; Cover Plate Adjustment <br /> 3/16"(5 mm) <br /> Pin(extended)Deflector extended Model G4/G5 Cover Plate Ceiling <br /> Model G5-28 Sprinkler Sensitivity <br /> Listing or Approval Agency <br /> Cover Plate Model <br /> cULus FM <br /> G4/G5 QR SR <br /> G4/G5 QR Gasket OR <br /> G4/G5 SR Gasket SR SR <br /> QR: Quick-response <br /> SR: Standard-response <br /> Bulletin 034 o Page 2 of 9 <br /> January 2020 �� www.reliablesprinkler.com <br />