Hand Operated Pressure and Vacuum Pump Calibrator (Only Hand Pump) for Calibration Labs, Field Calibration and Pressure Transmitter Calibration Model: AI-DP1-2200: Amazon.com: Industrial & Scientific
RVFM Hand Held Vacuum Pump with Pressure Gauge | Rapid Online
Automotive Air Conditioning Filling Refrigerant Pressure Gauge Dual-purpose Vacuum Pump Can Be Inhaled Breathable Repair Tool - Air-conditioning Installation - AliExpress
Always in Stock - Air Cadet Vacuum/Pressure Pump, Diaphragm, Single Head, 0.6 cfm, 115 VAC from Cole-Parmer