The Planted Tank Forum - Reply to Topic
Planted Tank Forums
Your Tanks Image Hosting *Tank Tracker * Plant Profiles Fish Profiles Planted Tank Guide Photo Gallery Articles

Go Back   The Planted Tank Forum > Specific Aspects of a Planted Tank > Equipment > Metering(needle) valves selection for our CO2 pressurized system

Thread: Metering(needle) valves selection for our CO2 pressurized system Reply to Thread
Title:
  
Message:
Post Icons
You may choose an icon for your message from the following list:
 

Register Now

In order to be able to post messages on the The Planted Tank Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Additional Options
Miscellaneous Options

Topic Review (Newest First)
07-28-2014 11:49 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 02:12 PM
OVT Which reminds me, I am overdue on my PM to bettatail.

v3
07-20-2014 07:38 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 10:33 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 08:04 AM
Bettatail caution! something similar appear!
05-30-2014 06:24 PM
newbieplanter Cool
04-21-2014 02:32 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.
04-21-2014 11:46 AM
Seadon Cool, thanks, also I was wondering about the Chell ultra fine valves, are the for really small tanks or do they just give you a very accurate degree of control and can be used in large tanks, say 75-125 gallon?


Sent from my iPhone using Tapatalk
04-21-2014 08:25 AM
AlanLe
Quote:
Originally Posted by Seadon View Post
Hey Betta, maybe you can help me understand something about the ideal 52-2-14 metering valve and the 52-1-x, I was told that the one you want is the 52-1-x due to the longer taper or the needle and larger orifice, the person who told me this said that unless you have a large tank, 120+gallons, you would have to run the 52-2 series almost completely closed. Is this true? I know there is some truth to what they are saying, the needle taper is finer and the orifice is 1/32" as opposed to 1/16", but does it really make it unuseable for a sub 100G tank? I have a 52-2-14 and I want to put it on my 29 gallon tank, is this practical? Thank you, and your posts have been immensely helpful in my understanding of pressurized gas setups.
You can run a 52-2 on a 10 gl.

Sent from my Nexus 5 using Tapatalk
04-20-2014 04:59 PM
Bettatail the ideal 2 series is ok, there is no problem to adjust the low bubble rate.
04-20-2014 04:24 PM
Seadon Hey Betta, maybe you can help me understand something about the ideal 52-2-14 metering valve and the 52-1-x, I was told that the one you want is the 52-1-x due to the longer taper or the needle and larger orifice, the person who told me this said that unless you have a large tank, 120+gallons, you would have to run the 52-2 series almost completely closed. Is this true? I know there is some truth to what they are saying, the needle taper is finer and the orifice is 1/32" as opposed to 1/16", but does it really make it unuseable for a sub 100G tank? I have a 52-2-14 and I want to put it on my 29 gallon tank, is this practical? Thank you, and your posts have been immensely helpful in my understanding of pressurized gas setups.
04-13-2014 05:48 PM
Bettatail Updated:
All Parker HR Series valves, the valve cartridge and the valve body are inter-changeable.
11-18-2013 09:07 PM
FlyingHellFish Wait a min, you're suppose to use a filter for these parkers? Where does one even go in these things?

2 micron particle filter?

uhhhhhh?

BettaTails, where art thou?
11-18-2013 06:39 PM
pwu_1
Quote:
Originally Posted by Bettatail View Post
Tested! now I am settle with the metering valve for my personal co2 system.

Takes too much turn to increase/decrease the bubble rate, miss the swagelok S series which is fast and accurate to set the bubbles. lol.
There is a problem of this metering valve though: like the Parker hannifin H2A, H3L, the brooks NRS needs higher pressure differential.
They all have the extremely small orifice and longer orifice passage(tube), so water/oil/dust can easily settled in the passage and clog the valve if the pressure differential is low. Higher pressure differential, water/oil/dust can easily be pushed through, so better to set the regulator output with higher pressure.

also, due to small orifice, need particle filters, the manual recommend a 2 micron particle filter
I guess a 7 micron particle filter is sufficient because the flow rate is about 1-2 sccm (1 bubble/second). Orifice is big enough for the 7 micron particles to pass through.



Hi bettatail, I'm trying to put together a budget friendly co2 setup. Could only find these Brooks NRS series valves at the price that I can afford.
I'm actually not even sure which version I'm getting since the ebay listing wasn't very clear. Guess I'll know when it gets here. Anyways, in your opinion, other than having to turn it many turns to get the desired bubble count(this is probably dependent on which version I get right? since you got the most precise version), if I set my output pressure to say 40psi, the needle valve should work fine right? Or should I set my output pressure higher?
Thanks for all the info btw. It was very helpful
08-18-2013 05:03 PM
oldpunk78
Quote:
Originally Posted by ROOTBEER View Post
where can I get this valv? this looks exakly what I am loking for ,, can this also controll liquid ?
Search for 'parker metering valve' on fleabay. You're looking for a h3.
This thread has more than 15 replies. Click here to review the whole thread.

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT. The time now is 10:36 AM.


Powered by vBulletin®
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright Planted Tank LLC 2012