The SHURflo Heavy Duty Advantage gas driven diaphragm pump is designed for the dispensing of BIB syrups, wines, teas, juices, milk and water. It utilizes a technically proven twin chamber, positive displacement design to maximize performance by minimizing pressure drop. The operation of the SHURflo BIB Gas pump guarantees a steady supply of syrup under pressure to a post-mix dispenser valve that mixes the syrup with water to an exact ratio. The pump is used in conjunction with BIB containers and quick disconnect (bag) fittings. The pump features automatic demand and automatic sold-out shut-off for ease of operation.