DV-29 JB Industries Micron Gauge Blankoff Test Unit - MICRON GAUGE ACCESSORIES - Used in conjunction with our digital micron gauges DV-40 or DV-22N and our superheat/subcooling gauge SH-35N, the DV-29 ensures a leak proof setup. JB's DV-29 works with all micron gauges and creates a closed system, eliminating any leakage under deep vacuum. The DV-29 eliminates other problems when attaching the micron gauge into the system. If the micron gauge is attached directly to the vacuum pump or with a 3' (91.4 cm) dedicated hose, you will get a lower reading as the gauge is sensing what the pump is doing and not what the pump is doing to the system.
Warning: This product may expose you to chemicals including lead which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov