DUAL CROSS-OVER RELIEF VALVE VBDC80 TYPE

The VBDC 80- series dual cross-over relief valves are built with two direct action relief valves and are used to limit the pressure on both connection lines. Sending pressure to the V port supplies the utility connected to it and the excess pressure is discharged to the V1 port. To adjust the maximum pressure on the V ports, use valve A. Vice versa, use valve B for the same operation on the V1 ports. Pressure adjustment is sensitive to any counter pressure on the discharge line. It is important to stay within the spring calibration range.