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Thread: Metering(needle) valves selection for our CO2 pressurized system Reply to Thread
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Topic Review (Newest First)
03-23-2015 12:08 AM
jeffkrol
Quote:
Originally Posted by Hilde View Post
Bump:
I can't make sense of the info at that link. I googled for explanation of the numbers with no results. Can someone supply a link that explains the numbers?
you will get used to it.. I did....
03-22-2015 07:29 PM
Dead2fall
Quote:
Originally Posted by Hilde View Post
Swagelok 20 series needle valve[/B], soft seat stem. Part number SS(B)-20R*
SS = Stainless Steel or
B = Brass
(The parentheses are telling you it will be SS or B)

20 = the model (not sure what the R denotes)

* = Connection style/size. The asterisk will be a combination of a letter and a number.
S- tube fitting
F- female connection
A number will follow the S or F. It denotes the size of the connection.
The only ones that really concern us are:
4- 1/4"
2- 1/8"
So for instance, SS-21RS4 would be a stainless 21 series with a 1/4" tube connection. B-31RF2 would be a brass 31 series with a 1/8" female connection. Keep in mind that is only the breakdown for that type of part number.
03-22-2015 06:21 PM
FlyingHellFish Making sense of the numbers:

Small Cv = This tells you the rate of flow for the valve....
Small Orifice = The size of the hole that the media flows through....
Handle turns = The amount of turns the valve has....

*The handle itself* = Easier to turn, torque, turn counter

No worries Hilde, we all have to start somewhere.
03-20-2015 11:58 PM
Hilde
Quote:
Originally Posted by Darkblade48 View Post
Without more details, it is hard to be sure, but from what you have provided, most likely not.

A hint is that the needle valve can work at 6000 PSI, which would indicate that it is not really precise enough for our purposes. Also, 6000 PSI seems to be ridiculous; are you sure it was not 60 PSI?
I thought 6000 PSI was good. Thought that the higher the better. I don't understand these valves and can't find any info to make sense of the numbers. Numbers such as for Swagelok 20 series needle valve, soft seat stem. Part number SS(B)-20R* Orifice: 0.08" Cv: 0.09 (at 2.5 turn full open)

Bump:
Quote:
Originally Posted by jeffkrol View Post
most regulating valves are rated high 3000psi plus for operating range..
Hoke 1300's are rated at 3000psi brass 5000psi stainless steel
http://catalog.hoke.com/Asset/Meteri...g-79013ENG.pdf
I can't make sense of the info at that link. I googled for explanation of the numbers with no results. Can someone supply a link that explains the numbers?
03-20-2015 03:24 PM
jeffkrol
Quote:
Originally Posted by Hilde View Post
Would this needle valve by PIC work on a paintball Co2 tank? It has 1/4" Male NPT x 1/4" Male NPT Connection Size, and holds pressure up to 6000 psi.
Cheap (???) Chinese needle valve. I don't know of any opinions good or bad on them.. Personally stick w/ "name brand".
A Fabco is good enough w/out getting too fancy.

Quote:
Originally Posted by Darkblade48 View Post
Without more details, it is hard to be sure, but from what you have provided, most likely not.

A hint is that the needle valve can work at 6000 PSI, which would indicate that it is not really precise enough for our purposes. Also, 6000 PSI seems to be ridiculous; are you sure it was not 60 PSI?
most regulating valves are rated high 3000psi plus for operating range..
Hoke 1300's are rated at 3000psi brass 5000psi stainless steel
http://catalog.hoke.com/Asset/Meteri...g-79013ENG.pdf
03-20-2015 05:19 AM
Darkblade48
Quote:
Originally Posted by Hilde View Post
Would this needle valve by PIC work on a paintball Co2 tank? It has 1/4" Male NPT x 1/4" Male NPT Connection Size, and holds pressure up to 6000 psi.
Without more details, it is hard to be sure, but from what you have provided, most likely not.

A hint is that the needle valve can work at 6000 PSI, which would indicate that it is not really precise enough for our purposes. Also, 6000 PSI seems to be ridiculous; are you sure it was not 60 PSI?
03-19-2015 11:46 PM
Hilde Would this needle valve by
PIC PIC
work on a paintball Co2 tank? It has 1/4" Male NPT x 1/4" Male NPT Connection Size, and holds pressure up to 6000 psi.
01-03-2015 01:38 AM
Milligreen
Quote:
Originally Posted by oldpunk78 View Post
I don't believe many of us have any idea what would work when just searching around on [Ebay Link Removed] You're probably not going to see anyone posting up their Hoke or Parker. I think my favorite not so common valve is the Swagelok 'S' series. It's kinda like a smaller version of the Ideal valve.

I don't think I've ever seen anybody else using this one: (my personal reg)

Hey.. what happen to the pic? Your inbox is full too.
Think i found one just like it, trying to compare. payed 100 don't know if i over payed.. It does look brand new.
07-28-2014 10:49 PM
quark I'm using a Clippard MNV-4 needle valve on my Atomic Co2 regulator that has a fixed working PSI of around 30psi (that's what it levels out to after a while). I can't seem to reliably adjust my Bubbles down to 1 bps. After a few days, I have to re-adjust the needle valve. I'm only about 1/8 to 1/4 turn out from Fully closed. Interestingly, adjusting the needle valve requires me to crank it open a bit, close it, and crank it open again. Going back to about the same needle position.

I was thinking of switching to a fabco nv55 but based on specs, It might be the same. Am I doing something wrong? or is there something out there that will not fluctuate as much. I've run other MNV-4 on about 20-30psi, but at a faster bubbles per seconds on larger tanks, seemed fine, I'm currently using this setup on a nano, about 3.5 gallons with an external reactor, so I don't need that many BPS. Any recommendations that doesn't exceed $60? and is readily available?
07-20-2014 01:12 PM
OVT Which reminds me, I am overdue on my PM to bettatail.

v3
07-20-2014 06:38 AM
FlyingHellFish What metering valve is it? I got a friend who needs one for his build, the 2 Hoke I brought never came (you guys know where that thread is) so now I'm stuck here trying to get my friend a metering valve so he won't end up with a fabco....


If it's the Parker H3 and below.... omg!
07-19-2014 09:33 AM
AlanLe the h0. it's too expensive. 1/8 tube fitting. all we are doing is raising the price. seller will profit.
07-19-2014 07:04 AM
Bettatail caution! something similar appear!
05-30-2014 05:24 PM
newbieplanter Cool
04-21-2014 01:32 PM
AaronT
Quote:
Originally Posted by AlanLe View Post
You can run a 52-2 on a 10 gl.

Sent from my Nexus 5 using Tapatalk
+1 I used the exact same needle valve for 5 years on tanks as small as 10 gallons. It takes smaller adjustments than the 1 series for sure, but it works just fine.
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