Chief Delphi - General Question About Pneumatics

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- Pneumatics (http://www.chiefdelphi.com/forums/forumdisplay.php?f=54)

- - General Question About Pneumatics (http://www.chiefdelphi.com/forums/showthread.php?t=61940)

EricH

21-01-2008 15:43

Re: General Question About Pneumatics

Quote:

Originally Posted by itsme (Post 682917)

We put teflon and now it's fine (just a tiny bit air running out, but not really significant). But if we screwed a bit the valve (the inner screw-nut) did it change the calibration?
If you say there is already a default relief valve on the compressor, is it a must to put another relief valve in the circuit?

The one on the compressor is to ensure that you don't go over a safe pressure. The manual one (with that black valve) allows you to drain the air manually. You probably want that on so you don't have to run a cylinder multiple times to drain the system.

I honestly don't know about the 125 psi valve.

itsme

21-01-2008 15:49

Re: General Question About Pneumatics

Yeah, I already put that manual valve (I connected a circuit almost identical to the one in the manual)

But what about the so called relief valve on the KOP checklist?

EricH

21-01-2008 15:59

Re: General Question About Pneumatics

Quote:

Originally Posted by itsme (Post 682931)

Ohhh you meant the regulator?
I put the regulator and calibrated it to be at maximum of 60 PSI (as said in the rules).
I'm talking about the relief valve (the one with the blue spring inside it).

EDIT

Or did you mean the black manual valve?

And what about the so called relief valve on the KOP checklist?

The "relief valve" from the checklist is the one that you cannot change. It must go on the compressor. <R95>.

The black manual valve also must be in the system.

Quote:

<R97> The Parker pressure vent valve must be connected to the pneumatic circuit such that, when manually operated, it will vent to the atmosphere to relieve all stored pressure. The valve must be placed on the ROBOT so that it is visible and easily accessible.

I don't know which relief valve has a blue spring inside it. Might be one of the regulators or gauges.

itsme

21-01-2008 16:06

Re: General Question About Pneumatics

Quote:

Originally Posted by EricH (Post 682940)

The "relief valve" from the checklist is the one that you cannot change. It must go on the compressor. <R95>.

So if I screwed a bit the inner nut-screw did it change it?:ahh:
What should I do to change it back??

EricH

21-01-2008 16:07

Re: General Question About Pneumatics

Quote:

Originally Posted by itsme (Post 682945)

So if I screwed a bit the inner nut-screw did it change it?:ahh:
What should I do to change it back??

I don't know the answer to either question.

haroony341

23-01-2008 10:51

Re: General Question About Pneumatics

what are the exact rules on amount of pressure the system can have. i was going through the robot rules and i found we can have a limit of 120psi, but in the pneumatics manual its says the regulator has a limit of 60 psi.
is it 120 psi in the tanks and only 60psi elsewhere?
how does that work?

MrForbes

23-01-2008 11:17

Re: General Question About Pneumatics

That is correct. You have the compressor, pressure switch, tanks, relief valve, high side pressure gage, and manual release valve all connected together before the regulator. This part of the system is at 120 psi maximum.

After the regulator, you have the second pressure gage, the solenoid valves, and the pneumatic cylinders (and the second pressure regulator if you so desire). This part of the system is at 60 psi maximum.

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