09-09-2010, 10:20 AM
Join Date: Jun 2005
Location: Burlington, NC
iTrader Positive Rating: 100%
| | Re: New to CO2
Originally Posted by Gramazing
Which do you use? I can see how the V52-1-12 must allow for very precise control.
Both valves allow for very precise flow rates. Their insides are identical. Both have 22 to 24 turns from fully closed to fully open.
This micrometer handle allows you to know exactly how many of its 22 to 24 revolutions that the valve is set at plus which part of its 360° revolution that it is set at too. When ever you rotate the handle for either increasing or decreasing the flow, you know exactly how far you adjusted it. If you would ever want to go to a previous setting, you can easily find it. Also, let's say that you require a lot of CO2 for your aquarium. Sometimes the flow is so fast that you really can't count the bubble rate in your bubble counter. Many depend on their drop checker and their critters to tell them the stopping point. With the micrometer handle, you have the precision to know exactly how far out the valve is open within only a few degrees. You can easily fine tune it.
The regular handle model is cheaper, but still with precise flow control. You can follow your adjustments by counting the bubble count rather than on a micrometer handle. You can mark the adjustment knob for reference if you want to. If you would not need the precision of the micrometer handle, this would still work fine. You could always get the micrometer handle later if you want it. You can buy it separately if you wish. You just remove the stock knob with an Allen wrench and replace it with the micrometer handle. Then you "0" the handle out or you can call this "calibrating the handle."
Swagelok, Parker, Nupro and Whitey metering valves are available with a Vernier micrometer handle as well. They can come stock on these valves or you can purchase the micrometer handle kit and put it on. Here are two that I have purchased on ebay at very reduced prices. angle flow straight flow