Quote:
Originally Posted by Al Skierkiewicz
R66 d reads as follows...
This is one of those rules written on industry specifications that are changing. The "working pressure" spec now used by manufacturers are the optimum settings for valve operation not the maximum safe pressure for the device. The max pressure for these valves is 125 psi. Please check the 2016 rules when they are published.
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Thanks to Al & the GDC for updating this. Although putting in the extra relief valve isn't that big a deal, there is a cost to it and more places for air to leak. Minimal safety benefit.
We always use single solenoid valve unless there is a design reason to use a double solenoid valve. The din connector that comes with the valve has the LED indicator as well. I like the cable assembly because the connector is potted. The wire pair are both black & numbered 1 & 2. They poke nicely into the PCM. Valve directions show terminal 1 as positive. I have not tested to see if that really matters, It matters on some DC solenoids and not on others.