Natural Gas Forklift fleet at Ralston Purina refueled with IR station.

Ralston introduced its natural gas vehicle (NGV) station to the forklift operators in June 1998. Within the first quarter of '99, 15 compressed natural gas (CNG) forklifts made-up the fleet, which runs around the clock seven days a week. 

The CNG Station can be installed in one day.


Operating a fleet of CNG forklifts is "absolutely better" than running propane units, according to Ralston Purina, Mechanicsburg. Despite running forklifts 24 hours a day, Ralston's warehouse does not have problems with carbon monoxide. Making this even more impressive is that the facility does not have to rely on additional ventilation as might be the case with our forklift fuels.



  • Improved indoor air quality for employees.
    Propane produces about 1.40 grams per mile of carbon monoxide, reactive hydrocarbon, while natural gas produces only .01 grams per mile. With cleaner burning natural gas, operators are exposed to considerably less emissions in a normal operating day.
  • The availability of a constant fuel source and no waste of fuel or power.
    By contrast, propane tanks are usually replaced with unused fuel still in the tank, and a battery has to be recharged before it is completely without power. This is a waste of operating expenses.

  • Funding from the PA Department of Environmental Protection (DEP).
    For Ralston Purina's Mechanicsburg facility, the DEP funded  40 percent of the station and forklift costs.

  • Reduced maintenance.
    There is less need for oil changes and less chance of engine wear and tear since natural gas burns cleaner than propane. By eliminating battery upkeep, there is no extensive downtime for recharges.


P.C. McKenzie Company
P.O. Box 112638
Pittsburgh, PA 15241
Fax: 412-257-8890
Phone: 412-257-8866
P.C. McKenzie Company
1365 McLaughlin Run Road
Pittsburgh, PA 15241