Originally Posted by PlayWithPride
this is probably not the correct area, but i was wondering if a cocker pump has to run on compressed air or can it run on a 20 ounce co2?
Depends on what regulator you're using. If you're not using a reg, CO2 or air will work. If you're using a reg, you'll want to consult the manual or ask around if it's ok to run CO2 through it.