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Old 11-07-2008, 12:04 PM #1
Uziel Gal
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***** Negligent Discharge/Reg Safety Bulletin!*****

The TL;DR version of this message: -

If you swap reg collars, or change macroline elbows, ensure to re-install the Pressure Control Valve! - pictures below.


For those of short attention span, thank you for your patience......

For the rest of you, an explanation: -

Apologies to those who have already read this information elsewhere, but this subject matter relates to safe use of the Geo, and as such is obviously a cause for concern, and Planet would like to make sure that as many people as possible are aware of it.

Parts swapping is becoming a popular hobby amongst Geo owners, in order to create new colour combinations - no big issue there.

However, removing the swivel collar from the regulator - in order to swap collars - requires removal of your macroline elbow.

The macroline elbow contains a small but important safety feature in the form of a Purge Control Valve - a small plastic "Golf-Tee" shaped parts with a small hole drilled through it.

This parts sits in the end of your elbow like so: -




In normal use, the PCV will be pushed out of the elbow by the air entering the reg, and so it has no effect on air flow. When you purge the air from your marker, and the air tries to rush back out of the reg and through the elbow, the PCV will be pushed back in to the elbow, forcing the venting air to go through the small hole through the centre of the valve. As such, the air is forced to vent from the reg slowly.

This is important, as if the air in the front chamber of the bolt kit vents out before the air in the firing chamber - as it will, due to there being more air to vent from the firing chamber - the bolt will be pushed forwards, the remaining air in the firing chamber will be released, and the marker will fire. By slowing the release of the air, the PCV prevents the marker firing when you de-gas it. Of course, you should have a barrel sock on your barrel at this point, but better safe than sorry.

The upshot of this, and the whole point of this thread is as follows: -

If you are going to swap reg collars, be careful when removing the elbow, to prevent damaging the PCV. After swapping the collars, ensure that you re-install the PCV in to the elbow before screwing it back on.

Same goes if you need to change the elbow - install the PCV in your new elbow before screwing it back on.

***Failure to install the PCV in your HPR elbow can lead to the Geo firing when you de-gas it!***
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Old 11-07-2008, 01:34 PM #2
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You get a gold star for this one, lol.

I sent my parts to ano a week ago and Im guessing when I did this part fell out unnoticed and I wouldnt think it came from the ego anyways since none have had it. I was cleaning up that afternoon and found it. I thought it was a part to something my girlfriend owned so out of pure luck I set in on the dresser for her and it was still there
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Old 11-07-2008, 02:12 PM #3
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Just curious but does this piece do anything other than ensure that the marker does not fire when degassed?
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Old 11-07-2008, 02:46 PM #4
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That is it's sole purpose - to let air in to the reg quickly, but slow it down on the way out, and hence stop the marker firing when it is degassed.
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Old 11-07-2008, 03:05 PM #5
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Old 11-08-2008, 11:39 AM #6
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I assume the same safety warning applies to anyone swapping out the stock reg with aftermarket?
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Old 11-08-2008, 02:08 PM #7
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Yes it would, as that would include a change of macroline elbow.

Basically, whatever the circumstances, the Pressure Control Valve must be installed in your macroline elbow.
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Old 11-13-2008, 11:09 AM #8
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thank you. haha im glad you said something!

and does this go with the ego also?
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Old 11-13-2008, 11:31 AM #9
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Not an issue with the Ego9. It doesn't have the PCV, and nor does it need it - the marker functions in a different way to the Geo.

Last edited by Uziel Gal : 12-01-2008 at 11:00 AM.
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Old 11-18-2008, 09:49 PM #10
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Aren't there some aftermarket reg's that do not use the "collar" type design?

In that case, couldn't the PCV piston be pushed inwards too far, and not be able to "close" when the gun is de-gassed?
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Old 11-19-2008, 01:16 AM #11
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It is true that not all regulators have a swivel collar, but of those, some still have a port between the reg internals and the elbow, that would stop the PRV going far. If the elbow were to open directly on to the internals, then that could end up being an issue.
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Old 01-26-2009, 12:53 PM #12
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Quote:
Originally Posted by xluben View Post
Aren't there some aftermarket reg's that do not use the "collar" type design?

In that case, couldn't the PCV piston be pushed inwards too far, and not be able to "close" when the gun is de-gassed?
Do you see any need for a aftermarket inlinereg when you have one of the best in the market fitted right from the start ?

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Old 01-26-2009, 03:14 PM #13
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Not to mention that the stock reg will be better still once you have the new piston installed - if you haven't already, REGISTER YOUR MARKER TO GET THE FREE UPGRADES!
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Old 02-26-2009, 11:03 PM #14
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How would i go about getting a new PCV?
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Old 02-26-2009, 11:06 PM #15
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Contact the Rhode Island eclipse center.
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Old 03-29-2009, 09:58 PM #16
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Thank you for the post Uzi, I'm looking at purchasing a Geo.
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Old 04-22-2009, 01:45 PM #17
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Nice, a sticky for this. Oddly enough this just happend to me with my friends brand new Geo and he has not swapped parts.
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Old 04-22-2009, 03:31 PM #18
Uziel Gal
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If this was more than a freak one-off occurrence, then I would suggest removing the macroline elbow and checking that the PVC is present, installed correctly, and not broken.
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Old 04-22-2009, 03:48 PM #19
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Already did and its fine. It gassed and de-gassed the gun a few more times and it still did it but not with as much air coming from the bolt.

Honestly, thats just a bad design.
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Old 04-23-2009, 08:37 AM #20
Uziel Gal
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Is enough air released to launch a ball at any kind of velocity?
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Old 04-23-2009, 08:43 AM #21
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my geo did this also when I had the scratches on the bolt. It some how shot paintballs out when I degassed the marker...idk how. Got the new bolt from pe with no scratches, didn't shoot anymore shots when degassing....
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