Vacuum meter set for Delphi filter with UNC connection set

The set contains.

A T-piece, a coupling piece G1/4 and a vacuum eater filled with glycerine

This set is suitable for the Delphi filters with a brass connection set, this is a hose tail with intermediate piece with UNC thread.

This vacuum meter is extremely suitable for including in the fuel system of your engine and preferably with the coarse filter. By placing this meter near the coarse filter, you can see at a glance what condition the filter is in and whether it is not slipping shut.
With a clean filter the vacuum meter will indicate a pressure of between 0 and -0.1 bar, it can vary 0.100 mm bar after the temperature changes and whether the motor is on full load wire.
At a vacuum of -0.300, the coarse filter must be replaced.

Thread connection is G 1/4