GTA

All Springer/NP/PCP Air Gun Discussion General => PCP/CO2/HPA Air Gun Gates "The Darkside" => Topic started by: Lani52 on December 19, 2021, 12:51:22 PM

Title: Blew my first pressure disk
Post by: Lani52 on December 19, 2021, 12:51:22 PM
I had a spare in my parts that came from Benjamin when I got the Kratos.

Where do I gets more?  I see Amazon has disks for the YoungHen, 7mmx17 but I don’t know if they are the same(mine don’t measure 7mm). 
I have the Kratos parts schematics that list a ‘seal’ in that area of the diagram, but they probably want 10 bucks or so to get it to me. 

I would rather have a dozen or so if I knew where to buy them. I can order one for less than 7 bucks from UK, but the postage is over $20.

I will call Crosman Monday to see how much they are, if I can determine that what Crosman/Benjamin calls a ‘seal’ is really a burst disk.

Thanks in advance,

Roachcreek
Title: Re: Blew my first pressure disk
Post by: Madd Hatter on December 19, 2021, 12:54:30 PM
???? how did you pop a burst disk on your rifle?
Title: Re: Blew my first pressure disk
Post by: Rat Sniper (AKA: PaulT58) on December 19, 2021, 01:44:16 PM
I need some also, and probably need a new plug as well.  My Akela is still leaking very slowly from the threads of the burst disk plug.  I put a new burst dust in, but it's still leaking about 1 bubble per second.  So, not fast, but still leaking.  I was going to call Crosman on Monday also to get a few burst disks and a new plug.  I'm hoping that will fix it.  If not I may need a new block and air cylinder since I've not been able to get those two parts apart!
Title: Re: Blew my first pressure disk
Post by: johnbrown on December 19, 2021, 02:17:26 PM
What was the air tank pressure when the disks burst?
I have been overfilling my Akela to 3200-3400 PSI to get a decent shot count and would like to know how much it can be overfilled.
Title: Re: Blew my first pressure disk
Post by: johnbrown on December 19, 2021, 02:19:10 PM
I had a spare in my parts that came from Benjamin when I got the Kratos.

Where do I gets more?  I see Amazon has disks for the YoungHen, 7mmx17 but I don’t know if they are the same(mine don’t measure 7mm). 
I have the Kratos parts schematics that list a ‘seal’ in that area of the diagram, but they probably want 10 bucks or so to get it to me. 

I would rather have a dozen or so if I knew where to buy them. I can order one for less than 7 bucks from UK, but the postage is over $20.

I will call Crosman Monday to see how much they are, if I can determine that what Crosman/Benjamin calls a ‘seal’ is really a burst disk.

Thanks in advance,

Roachcreek

Under warranty Crosman should ship those parts for free.
Title: Re: Blew my first pressure disk
Post by: Lani52 on December 19, 2021, 07:59:57 PM
I had filled less than an hour before and used the auto shut off, it did not blow, it just started leaking at a rate I see when I open the degas vent. When finished I then reset it to 4500 psi to fill a tank. I suspected I may have had a slow leak earlier, but suspected I had just not filled it after using it last.

I will contact Crosman tomorrow if no one knows a cheaper source.

The disc that blew resembled a intact rivet on a pair of Levi’s with the nipple sticking up on the center, did not see a hole.

I fill my Kratos to 3625 routinely, it has a 3625 psi TalonTunes cf tank.  It is sometimes regulated and is now.  My Bighorn I fill to the same pressure, it is a rated to 3625 psi.

I think it was a faulty disc,

RC
Title: Re: Blew my first pressure disk
Post by: Pelletjunkie on December 19, 2021, 08:40:46 PM
Blowing burst discs is usually a change of underwear moment. Hope yours wasn’t.
Title: Re: Blew my first pressure disk
Post by: Lani52 on December 19, 2021, 11:48:55 PM
Frank,

Good thing it wasn’t a Big Bang, I was right next to it.  It was just a leaking sound that quickly got louder,  then slower as the pressure went down.  Took 5 minutes or so to empty completely.

RC
Title: Re: Blew my first pressure disk
Post by: Lani52 on December 20, 2021, 09:06:11 PM
Bought 2 from Crosman,  $7.00 each.

RC
Title: Re: Blew my first pressure disk
Post by: Rat Sniper (AKA: PaulT58) on December 21, 2021, 09:57:48 AM
Ouch!  I may try and find another source of supply! 
Title: Re: Blew my first pressure disk
Post by: AlanMcD on December 21, 2021, 12:38:24 PM
I agree that $7 per seems to be a high price, but with luck 2 of them will be a lifetime supply!

I popped one about six or seven years ago (through my own stupidity) and then laid in a supply to have on hand, and none have popped since . . .
Title: Re: Blew my first pressure disk
Post by: mr007s on December 21, 2021, 12:43:42 PM
Paint ball shop should have those
Title: Re: Blew my first pressure disk
Post by: Nomadic Pirate on December 21, 2021, 12:53:46 PM
I did burst a disc on one of my Storms once maybe 3-4 years ago,.....just made a replacement cutting the lid of a Benjamin pellets tin :)
Title: Re: Blew my first pressure disk
Post by: FuzzyGrub on December 21, 2021, 12:59:47 PM
Two spares come in the little parts bag.  I measured 8.83mm (0.348") OD X 0.43mm (0.017") thick.
Title: Re: Blew my first pressure disk
Post by: Rat Sniper (AKA: PaulT58) on December 21, 2021, 02:31:32 PM
Those are just a tad larger than the burst disks used in the YH Compressor.  Those measure 7*7*1mm / 0.28*0.28*0.04 inch thick.  The may be too thick because they are probably rated at 5000 psi, but the diameter may be too small to seal on these rifles.
Title: Re: Blew my first pressure disk
Post by: FuzzyGrub on December 21, 2021, 03:25:55 PM
Looks like it is also on the Puncher Breaker, and is one of the more common leak points.  Tightening of the set-screw to seal it.  I didn't see a US sourced supply, just UK.