Sidewall sprinklersprinkler headfire systemproduct details1.material: brass and chrome plating2.temperature: 68with 5mm glass bulb3.thread: 12"4.k= 805.rated working pressure: 12 bars(1.2mpa)6.airproof test pressure: 24bars(2.4mpa)7.strength test pressure: 30bars(3mpa)8. Weight: 53g more or less