The FJC R-1234yf/R-134a Spark Proof 5 cfm Vacuum Pump, No. 6930, is designed to remove destructive moisture and non-condensable gases from R-134a and R-1234yf. The two-stage 5 cfm 50 micron rated vacuum pump is spark proof, meaning it produces no heat or sparks, making it ideal for working with mildly flammable materials such as R-1234yf. The vacuum pump's lightweight and durable construction enables easy handling and long-life use.