[Al Skierkiewicz]

Mike and Mike,
I have been pondering this question overnight and I think the answer might be this...
If you have a compressor you must have a few components on board to go along with it. These robots must have a pressure switch and be able to show that the compressor is under control of the RC and shuts off whenever the pressure reaches 125 PSI. So that means you have to include a high side guage to show that the switch is operating ( and some method of closing the system for testing during inspection). The robot rules also reguire the low side pressure to be 60 psi or less. So that reuires the regulator and another guage. I am thinking the relief valve needs to be in there somewhere to insure the system pressure is removed before working on the robot just for safety.
I have to stress that you need to take this through the Q&A for a definitive answer. I wouldn't want you to be surprised at an event.