ORS 480.340: Automatic shut-off devices regulated; aviation fuel exception.

An owner, operator or employee of a filling station, service station, garage or other dispensary where Class 1 flammable liquids, except aviation fuels, are dispensed at retail may not install or use or permit the use of a device that permits the dispensing of the liquids when the operator of the discharge nozzle removes the operator’s hand from the control lever, unless the device is equipped with an automatic nozzle of a type that has been approved by the State Fire Marshal and that has as an integral part of the automatic nozzle assembly a latch-open device capable of shutting off the flow of the liquids reliably when the tank is filled or when the nozzle falls or slips from the filling neck of the tank.