A product filler assembly (i.e., fill valve) configured for use in association with any number of flowable material, however, it is particularly well suited for flowable material that is otherwise difficult to fill due to viscosity, surface tension and/or poor separation characteristics. Most preferably, the device is configured to provide a laminar flow of the product being filled, proportional to the size of the package. The product filler assembly includes a nozzle cutoff assembly which directs air or other fluids at the opening of the product filler assembly to separate the flowable material from the filler assembly and to reduce seal contamination of packages or containers.