Vacuum Check Valve
Vacuum Check Valve:
A Vacuum Check Valve blocks airflow in one direction. It allows free airflow in the other direction. The check side of this valve will hold the highest vacuum seen on the vacuum side. If not, replace it.
A Vacuum Check Valve blocks airflow in one direction. It allows free airflow in the other direction. The check side of this valve will hold the highest vacuum seen on the vacuum side. If not, replace it.