Product Introduction
The ST-VG90 digital vacuum gauge is a portable professional measuring instrument for refrigeration maintenance. It features a compact handheld design, clear digital readout and easy-operation buttons. Equipped with a brass three-way adapter for convenient field connection. Suitable for vacuum measurement of air-conditioning, refrigeration units, chemical equipment and laboratory systems. Lightweight body allows users to carry and operate on site, delivering reliable vacuum detection performance for HVAC repair work.











