The Suction Gauge is used to measure the sealed suction of vacuum system in inches of water lift. It has a rubber adapter that will allow the device to be used to measure suction at the unit, the vacuum inlet and the hose.
A suction gauge can be used to determine if there is a clog in the vacuum system. Determining where the clog is located is advantageous in being able to get to the clog and get it cleared quickly. Poor suction may indicate that the vacuum unit needs to be serviced. Perhaps a filter needs to be cleaned or a bag needs to be emptied. This will help you to maintain the system and give you the best suction your vacuum unit can provide.