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Review on πŸ§ͺ Dorman 47149 Vacuum Check Valve: Ensuring Optimal Functionality and Performance by Dwayne Calhoun

Revainrating 1 out of 5

severely restricts Spares

It seems to restrict air access more than anything else, I hooked it up to my Aoyue repair station to check airflow: open was 5 units, with one-way reversing valve 2 units , in the other direction 0.5 flow units. It was expected that there would be more, for example 4 in one direction and 0 in the other. This doesn't make the heater control work for me, but without a normally working valve my front axle won't turn on.

Pros
  • Spares
Cons
  • Available in white only