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BRR <br /> TECHNOLOGIES <br /> VENT <br /> Top --♦ <br /> CW Coil <br /> DRAIN <br /> Triple <br /> Duty <br /> Valve <br /> From Rink <br /> To Chiller <br /> 12" TO 20" <br /> SPACE <br /> BETWEEN <br /> COLD COIL <br /> SUPPLY PIPES <br /> AND <br /> COLD COIL <br /> RETURN PIPES <br /> ALL PIPING INSIDE THE ARENA IS <br /> TO HAVE INSULATION AND WHITE <br /> PVC COVER JACKETS <br /> OVER THE INSULTATION. <br /> U.S. PATENT # TITLE: COLD COILS PIPING <br /> 6,321,551 PROJECT: LONG LAKE, MN / ORONO RINK <br /> 6,694,757 DATE: 8-22-06 <br /> 6,935,131, <br /> OTHER US PATENTS PENDING BRR TECHNOLOGIES, INC. <br /> 4915 ARENDELL ST., MOREHEAD CITY, NC 28557 <br /> CANADIAN PATENT # 2,369,330 PH: 252-727-0994, FAX: 252-727-0996 <br /> DRAWN BY: TOM BACKMAN <br /> THIS DRAWING IS NOT TO SCALE. <br />