Finishes: chrome Buld:5mm/3mm Orifice Size:1/2'', 3/4" Nominal operating temperature:68 Celsius degree Brief introduction and applicationSprinkler is an important part of wet-type auto spraying system. It is usually installed inside the building and structures with light fire danger, medium fire danger and heavy fire danger, such as workshop, warehouse, hotel, shop, recreational place, hospital, ...