DRAIN VALVE HAVING SIGHT GLASS

摘要

PURPOSE: A draining valve is provided to simplify installation and to secure a monitoring window function by being integrated with a test valve and installing a sight glass in the draining valve. CONSTITUTION: A draining valve(200) with a sight glass is in connection with an alarming valve for the indication of water flow. A water discharging valve(300) is installed at the connecting part of the alarming valve and the draining valve. A testing valve(400) is installed at the upper side of the draining valve and drains water of a bypass pipe in connection with a sprinkler. A sight glass(213) is installed in the draining valve. A packing, the sight glass, and a bushing are successively assembled at the body of the draining valve.