| 摘要 |
<p>An early suppression fast response fire protection system comprises sprinkler piping system with at least one sprinkler head assembly, a water supply system and a check valve having a water supply inlet and an outlet. The outlet of the check valve is in fluid communication with the sprinkler piping system and the water supply inlet is in fluid communication with the water supply system. An antifreeze solution system is in fluid communication with the sprinkler piping system. The check valve isolates the antifreeze solution from the water supply unless a fire condition occurs. A pressure detector detects the pressure of the antifreeze solution in the sprinkler piping system. A flow detector detects the flow of water through the check valve from the inlet to the outlet when the check valve is opened. A control is in communication with the flow detector and the pressure detector. The control controls the flow of the antifreeze solution to the sprinkler piping system unless the flow detector detects the flow of water through the check valve from the inlet to the outlet in which case the control stops the flow of antifreeze solution to the sprinkler piping system to limit the discharge of antifreeze solution from the fire protection system.</p> |
