Fire Sprinkler Material: brass Type: upright Thread: 1/2", 3/4" Glass bulb: 3mm, 5mm Upright Fire Sprinkler Standard or quick response Type: Pendent, upright Finish: Natural brass, chrome plated Glass bulb: φ 3mm, 5mm Temperature rating: 57ºC, 68ºC, 79ºC, 93ºC, 141ºC Flow rate: K=80± 4 Thread: 1/2", 3/4"Sprinkler head is a key part of automatic water spraying system, mainly used for fire ...