A sprinkler system employing automatic sprinklers attached to a piping system containing air or nitrogen under pressure, the release of which (from the open sprinklers) permits the water pressure to ...
Frozen and burst pipes can cause some of the worst home disasters, but we have five high-tech solutions to keep things toasty ...
Behind a key part of the station's efficient operations are the Jixi Hydropower Section pipeline workers, who inspect the ...