A restrictor and dispensing system for dispensing sheet material is provided. The dispensing pump includes an inner fluid-filled bag encased by an osmotic layer and outer, semi-permeable membrane. The first nozzle is connected with the machine base and it is above the rotating disk. Accordingly, since the contact members 23 can be surface-mounted on the base 11, it is possible to enhance the electrical stability between the contact members 23 and the base 11.