Generally what makes it 'refrigeration grade' is the level of vacuum down to which it can pull. Here are some examples of refrigeration vacuum pumps: https://

Generally what makes it 'refrigeration grade' is the level of vacuum down to which it can pull. Here are some examples of refrigeration vacuum pumps: https://www.grainger.com/search/hvac-and-refrigeration/air-conditioners-accessories/air-conditioning-chemicals-tools-and-accessories/air-conditioning-and-refrigeration-tools/refrigerant-evacuation-pumps?ts_optout=true https://www.grainger.com/search/hvac-and-refrigeration/air-c...