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HYDRO-CHEK <br />AIR DIFFUSER <br />The HYDRO-CHEK air diffuser is the result of <br />an extensive research and development <br />program. It combines simplicity of design and <br />operation with quality construction to provide <br />efficient, economical, and trouble-free aeration <br />throughout new and existing waste treatment <br />systems. <br />The Patented "down -flow" design puts air flow <br />orifices in the diffuser body, not in the air check <br />diaphragm. It also preserves the diaphragm's <br />structural integrity for significantly extended <br />diaphragm life and eliminates the problems <br />caused by sediment that could otherwise settle <br />in diaphragm orifices. This down -flow design <br />also maximizes the shearing of the air bubbles <br />as they emerge from the orifices and turn <br />upward around the perimeter of the diffuser. <br />The HYDRO-CHEK air diffuser uses the <br />positive action of the flexible air check <br />diaphragm to prevent backflow. The <br />diaphragm distends during aeration to allow air <br />through the diffuser body orifices. When the <br />airflow is stopped, the diaphragm instantly <br />contracts and is force seated against the <br />diffuser body by the water pressure in the tank. <br />In this closed position, liquid backflow is <br />prevented from entering and clogging the <br />diffuser or air manifold. <br />r <br />r v <br />:� <br />AV Clxs <br />f <br />0111 s'000, <br />11910k1w 0.10/ <br />A n n Pollution <br />/"�i(� ./� Control <br />Systems, Inc <br />The diffuser body is molded of Celcon, a <br />strong, hard, non -corroding plastic that resists <br />fouling by algae or other foreign matter. The <br />air check diaphragm is molded in EPDM-based <br />rubber, a flexible, resilient compound that <br />resists both fatigue and chemical attack. The <br />retainer ring assembly is molded in <br />polypropylene plastic. It clicks the diaphragm <br />securely in place during operation and <br />provides for quick "no tools" diaphragm <br />replacement if every necessary. <br />Note: The HYDRO-CHEK air diffuser as manu- <br />factured by Diffused Gas Technologies, Inc. was <br />formally marketed by PCI and is presently being <br />offered by Pollution Control Systems, Inc. <br />Z <br />Head Loss vs Air Row Curve <br />0 1 2 3 4 5 6 7 8 9 10 11 12 <br />Air Flow—cfm <br />Nbdel <br />��T{ <br />Irl <br />A <br />B <br />C <br />D <br />Wx <br />cWa* <br />��H <br />sia- <br />DP -38 <br />36" <br />2-10 <br />1-17' <br />1916' <br />7/16' <br />16' <br />10 <br />3CFM <br />DP -75 <br />W <br />4' <br />3' <br />12CRA <br />5827 Happy Hollow Rd., Suite 1-B <br />Milford, Ohio 45150 <br />Tel: (513) 831-1165 Fax: (513) 965-4812 <br />Polconsys@aol.com <br />2�7 <br />