Vacuum meter with connection block

This set contains:

A block with 4 connections 1/4 gas and 1 plug 1/4 G and a vacuum eater filled with glycerine

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 gauge will indicate a pressure of between 0 and -0.1 bar, it can vary 0.10 bar after changes in temperature 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