■ You can reduce your piping time because you don't need connect a pressure gauge and this valve. You don't also need drill holes for a pressure gauge panel installation.
■ You can easily measure circuit pressure by setting an arrow mark on a knob to each port number.
■ "0" positions are marked between each port. Internal residual pressure of a pressure gauge is discharged to a drain port. A pointer of a pressure gauge always indicates "0" (zero), except the time measured pressure.
This improves the accuracy and durability of a pressure gauge.
