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California <br />Environmental <br />Protection <br />Agency <br />Air Resources Board <br />Donald L. Leininger, P.E. <br />Technical Liaison Manager <br />OPW Fueling Components <br />P.O. Box 405003 <br />Cincinnati, OH 45240 <br />July 15, 1996 <br />P.O. Box 2815 #r`96-18 <br />2020 L street Dear Mr. Leininger: <br />Sacramento, CA <br />95812-2815 <br />Approval of OPW Model 66CAS Inverted Coaxial Breakawav With Vapor Valve <br />You requested California Air Resources Board (CARB) certification of the <br />OPW Model 66CAS Inverted Coaxial Breakaway with vapor valve on November <br />28, 1995. The Model 66CAS breakaway is intended for use with gasoline <br />dispensing devices having vapor recovery capabilities. It is used between two <br />hose assemblies to safeguard against excessive pull force on the hose assembly <br />and dispenser. <br />The OPW Model 66CAS breakaway consists of an outer fuel carrying <br />assembly and an inner vapor carrying assembly. The unit consists of a rigid two <br />piece non -swiveling assembly with vapor and fluid check valves in the section <br />attached to the hose from the dispenser. The section closest to the nozzle <br />contains a fluid check valve only. The fuel check valves are maintained open <br />when coupled by the annular bodies of the two components. The vapor valve is <br />maintained open when coupled by a push rod which holds open a spring actuated <br />Viton ball. The coupled assembly is held together by a spring/groove assembly. <br />An annular stainless steel spring is fitted in a machined groove in the femald <br />assembly. When coupled, the spring fits into a corresponding machined groove in <br />the male assembly. The coupled halves are designed to separate when subjected <br />to a pull force not exceeding 300 pounds, thus relieving the pull forces on the <br />dispenser and hose assemblies. <br />The model 66CAS breakaway is intended for use with gasoline dispensing <br />devices having inverted. coaxial vapor recovery capabilities and working pressures <br />not exceeding 50 (psi). The unit shall be installed in conformity with the <br />manufacturer's instructions and all applicable codes and ordinances. As required <br />by the California State Fire Marshal (CSFM), the listee's name, model number, <br />AnP <br />%Reeyrled Paper <br />James K Strock <br />secretaryfor <br />Environmental <br />Protection <br />