The Post Mix BIB Dispensing system consists of the BIB package and the SHURflo BIB Gas pump. The BIB package works in conjunction with the Shurflo gas pump to supply syrup to the dispenser.
Typical Bag In Box Dispensing System

The BIB package, consists of a non pressurized 5 gallon (20 liter) flexible bag (other sizes are available), composed of polyethylene and metallized polyester, held inside and supported by a carton box. The polyethylene film, approved by the FDA, is in contact with the syrup in addition to providing the bag strength. The metallized polyester film provides an oxygen barrier to the bag for extended shelf life of product.

The SHURflo pump is driven by CO2, compressed air or nitrogen regulated to a proper pressure to supply the system between 20 and 85 psi (1.5 - 5.9 bar). The compressed gas only runs the pump and never comes in contact with the product. The pressurized line from the pump propels the liquid or syrup to the dispensing unit. The pump eliminates the need for check valves and manifolds used in transfer tank systems. The separation of the gas and liquid avoids contamination, foaming and purging of the liquid outlet lines when the BIB is empty. The Shurflo BIB pump ensures drink quality from the first drink to the last.

The SHURflo pump is compatible with all types of dispensing equipment.
When designing a Post Mix BIB Dispensing System there are certain points to be taken into consideration to ensure long-term operation of the pump and maximizing space efficiency.

BIB Gas Pump Pumping Capability
Beverage dispensing systems have inherent factors that determine the distance syrup can be delivered. Restrictions within the BIB system’s fluid path will affect pumping capability. Before deciding on a system tubing size, SHURflo recommends estimating system losses by considering the following:

  1. Syrup viscosity and temperature (cold plate, re-circ., etc.).
  2. Total syrup flow rate of dispensing valve(s) connected to a pump: add flow rate of valve(s) connected to a single pump.
    Note: the number of pumps is at least one pump per flavor. If there are five flavors in the dispensing unit, you will need five pumps.
  3. Inside diameter of the outlet/inlet tubing, fittings, etc.
  4. Vertical and horizontal distance of the outlet tubing.

Vertical tubing runs will reduce total tubing run length. To estimate the losses within the vertical distance, use the Maximum Horizontal Tubing Length by Viscosity Tables to Calculate the Maximum Pumping Distance (link to Calculate.doc).