That’s why it’s important to choose a professional who understands proper system design and placement ... but individual components like sprinkler heads or control valve manifolds may need ...

Grinnell 'Duraspeed' soldered fire sprinkler head, type 'B', made by Mather & Platt, Manchester, 1933-34. Part of sprinkler collection showing the development of fire sprinkler heads from 1885 when ...