Claw Please see below our product range of vacuum pumps operating under the Claw Principle. C-VLR (ZEPHYR) Capacity 60-500 m³/hr at 50 Hz and 72-600 m³/hr (42.4-353 cfm) at 60 Hz, Continuous vacuum upto 100 mbar (abs.) / 27.0 in.HgV