manometers and thermometer, pipes and faucet valves of heating system in a boiler room

boiler boilerroom circulation clock control device element equipment factory faucet fuel gage gas gate heat heating heatingsystem heatingwater hose hydraulics hydrostatic indicator industrial industry manometer manufacture measurement measuring metal needle pickoff pipes plant power pressure pressuregauge pressurehose pump room steam steel storage technology temperature thermal thermoinsulation valve water watercirculation workplace