it can be seen that these
valve ports correspond with the valves which are farthest from the PCV port.
Figure 1 shows a sample of the measurement results, indicating the leak monitors with "Type 1" acoustic sensors mounted on the upstream and downstream
valve ports. These measurements are from the first pressure cycle, i.e.
Boss plugs are available to seal any unused
valve ports in the manifold.
* Available boss plugs, to effectively seal any unused
valve ports in the manifold.
The
valve ports were made smaller and valve recesses were reduced.
Essentially control valves, they slowly open and close
valve ports - opening with increased pressure induced by a pump placed on-line or other device and closing with pressure drop.
This system provides a finger-tight seal suitable for solenoid
valve ports and other shallow PTFE ports.