What am I doing wrong??? Re:viton/ptfe 150 mesh screen gaskets - Cannabis Concentrates - International Cannagraphic Magazine Forums

moffatmafia · 02-03-2018, 08:55 PM

Every 10th run or so on my mk4c after about a 5 minute soak of the material when I open the dump valve the screen rips and the collection pot fills with the material. Terppextrators said it could be void space in the column but also that they have never seen this happen to a gasket like that.

prune · 02-04-2018, 02:45 AM

over-packing or over pressure, probably the second. do you have a gauge on your column?

nakadashi · 02-04-2018, 05:31 AM

Open the dump valve slowly to let the pressure equalize a bit between column and collection pot.

killa12345 · 02-04-2018, 02:19 PM

Personally i like to leave a piece of paper crumbled up in the tubes before i place my filter paper...This gives me like a 1" gap after im done packing. i remove the paper before my runs, so there is a gap between the filter paper and the viton screened gaskets. Its allow for the material expansion or just give a little space for the material to move on the intial pressure from adding gas.

Ive seen this before

moffatmafia · 02-04-2018, 09:59 PM

Waiting on more screens at the moment will be back with results....

moffatmafia · 02-11-2018, 04:42 PM

This has been crazy furstrating and is still happening, no I don't have a a gauge on the column. It's like there is an airbubble trapped somewhere and it pops while it's equalizing. Maybe just don't open the dump vavle all the way?

MJPassion · 02-11-2018, 05:26 PM

It sounds like your opening the ball valve too quickly after the soak.
A 1 to 2 minute soak causes pressure in my system to reach about 30-40psi while the collection pot is sitting at a near perfect vac for my elevation (7K ft).

I’ve not run my system enough yet to experience anything even close. I have noticed, however, that the viton screen gasket get damaged more & more each time I tighten the clamps down. Not the seal ridge but where the gasket is actually surrounding the screen (inside the ridge).

I’m wondering what the life expectancy of these seals are? Using High pressure clamps versus standard pressure clamps?

moffatmafia · 02-11-2018, 05:34 PM

I usually do about 4 and half minute soak. So that could definitely be the issue. Was considering not soaking and just leaving the dump valve open while spraying gas more like passive recovery. How would that affect yield tho?? I'd rather lose a little then keep blowing out screens tho

justintime420 · 02-11-2018, 11:43 PM

Dumb question but sometimes over looked are you opening the number 2 or liquid line to release pressure from the top before opening the dump valve to prevent such an aggressive dump?

gumby420 · 02-12-2018, 02:23 AM

only time I've had that happen were with really really shitty screen gasket from OSS. luckily I have like 3 more screens under my filter stack so it doesn't really matter. were they Terpp gaskets? Or from a 3rd party? If they are Terpp id say opening the ball valve to quick, if 3rd party it could be the quality.

02-03-2018, 08:55 PM	#1
moffatmafia Newbie Join Date: Jan 2018 Posts: 7	What am I doing wrong??? Re:viton/ptfe 150 mesh screen gaskets Every 10th run or so on my mk4c after about a 5 minute soak of the material when I open the dump valve the screen rips and the collection pot fills with the material. Terppextrators said it could be void space in the column but also that they have never seen this happen to a gasket like that.
	Quote

02-04-2018, 02:45 AM	#2
prune Member Join Date: May 2011 Posts: 551	over-packing or over pressure, probably the second. do you have a gauge on your column?
	Quote

02-04-2018, 05:31 AM	#3
nakadashi Member Join Date: Apr 2012 Posts: 291	Open the dump valve slowly to let the pressure equalize a bit between column and collection pot.
	Quote

02-04-2018, 02:19 PM	#4
killa12345 Ultimate Purple Breeder Join Date: Aug 2008 Location: in the deep south Posts: 510	Personally i like to leave a piece of paper crumbled up in the tubes before i place my filter paper...This gives me like a 1" gap after im done packing. i remove the paper before my runs, so there is a gap between the filter paper and the viton screened gaskets. Its allow for the material expansion or just give a little space for the material to move on the intial pressure from adding gas. Ive seen this before __________________ Killa's Little Corner - A Place for Bad Boys and Pretty Females: https://www.icmag.com/ic/showthread.php?t=141998
	Quote

02-04-2018, 09:59 PM	#5
moffatmafia Newbie Join Date: Jan 2018 Posts: 7	Waiting on more screens at the moment will be back with results....
	Quote

02-11-2018, 04:42 PM	#6
moffatmafia Newbie Join Date: Jan 2018 Posts: 7	This has been crazy furstrating and is still happening, no I don't have a a gauge on the column. It's like there is an airbubble trapped somewhere and it pops while it's equalizing. Maybe just don't open the dump vavle all the way?
	Quote

02-11-2018, 05:26 PM	#7
MJPassion Observer Join Date: Dec 2012 Location: uni-verse Posts: 5,584	It sounds like your opening the ball valve too quickly after the soak. A 1 to 2 minute soak causes pressure in my system to reach about 30-40psi while the collection pot is sitting at a near perfect vac for my elevation (7K ft). I’ve not run my system enough yet to experience anything even close. I have noticed, however, that the viton screen gasket get damaged more & more each time I tighten the clamps down. Not the seal ridge but where the gasket is actually surrounding the screen (inside the ridge). I’m wondering what the life expectancy of these seals are? Using High pressure clamps versus standard pressure clamps?
	Quote

02-11-2018, 05:34 PM	#8
moffatmafia Newbie Join Date: Jan 2018 Posts: 7	I usually do about 4 and half minute soak. So that could definitely be the issue. Was considering not soaking and just leaving the dump valve open while spraying gas more like passive recovery. How would that affect yield tho?? I'd rather lose a little then keep blowing out screens tho
	Quote

02-11-2018, 11:43 PM	#9
justintime420 Member Join Date: Jan 2010 Posts: 149	Dumb question but sometimes over looked are you opening the number 2 or liquid line to release pressure from the top before opening the dump valve to prevent such an aggressive dump? __________________ "When you smoke the herb it reveals you to yourself" - Bob Marley
	Quote

02-12-2018, 02:23 AM	#10
gumby420 Member Join Date: Dec 2015 Posts: 139	only time I've had that happen were with really really shitty screen gasket from OSS. luckily I have like 3 more screens under my filter stack so it doesn't really matter. were they Terpp gaskets? Or from a 3rd party? If they are Terpp id say opening the ball valve to quick, if 3rd party it could be the quality.
	Quote