Air Operated Diaphragm Pumps

G55 Series Gas (C02)/Air Driven Pump

Model No.: G55 Series

  • Highest flow rate available
  • High CO2 inlet pressure capability for long runs – up to 90 psi (6.2 bar)
  • Ultimate performance and reliability with extended service life
  • Built-in auto shutoff, automatically shuts off pump when bag is empty and restarts when a full bag is connected
  • Easy installation with all quick disconnect ports
  • Quiet operation
  • High altitude shutoff also available
  • Recyclable materials


Designed for dispensing Bag-in-Box syrups, juice concentrate (without pulp or particulates), teas, wines and liquor; Supplies the following from remote location: 4 x 3.0 oz (89ml) valves (each dispenses at 0.5 oz/sec); or 2 x 4.5 oz (133ml) valves (each dispenses at 0.75 oz/sec).
Pump Drive CO2 gas, Nitrogen or compressed dry filtered air
Materials of Construction (wetted parts:) Polypropylene, Santoprene®, EPDM, AISI 303 & 304 Stainless Steel
Operating temperature 34°F to 120°F; 1.1°C to 49°C
Displacement US Gallons (litres) 3.2 oz (91ml) per cycle
Operating Pressure 20 – 90 PSI; 1.4 – 6.2 barmax
Maximum Liquid Inlet Pressure 30 psi; 2.1 bar max
Flow Rate US gallons (litres) 7.0 oz/sec (207.0ml/sec) – open flow
Mean Service Life 100,000 gallons (378,541 litres)
Dimensions (H x W x D) 5.27 x 3.21 x 4.58 (inches)
133.8 x 81.5 x 116.3 (mm)
Approvals CE, SK, NSF Standard 18
Warranty Period 5 years
Weight 0.56 (kg)
1.24 (lb)