What The Dealio? (...Just said it to get everyone's attention)

[Lloyd Burns]

The regulator's downstream side will allow air from the high pressure source (your tanks) to enter the regulated low pressure portion when the pressure there drops below the set pressure, in our case, 60 factory set psi.

When the low pressure rises above the 60 psi, the regulator dumps air to the outside until it gets back down to 60 psi. This would occur if your piston sticks out the front of your robot as you crash into the diamond plate wall. It would also happen if you put higher pressure onto the downstream ports. (A "releiving" regulator)

If the flow markings on the reg are hard to see, read the manual to make sure you have the one hi-pressure port receiving the air. The other ports are all low pressure from the same part of the reg.

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One other item to check: all those lovely push-in connections, and those lovely teflon-wrapped brass fittings. Check for leaks with soapy water (a galss of water with a squirt or two of dish detergent, works well, applied to the outside of each joint.