While a leak in your air line might appear insignificant, it decrease the efficiency of your compressor. Prolonged exposure to moisture will also damage your pneumatic tool. For professionals as well as hobbyists, this can be an issue.
How To Handle Air Line Condensation
The Danger of Moisture in Air Lines
It’s not just about the water; it’s also about where the water go. If you don’t have some type of trap, then your condensation is going to your equipment. That’s where a good air line setup comes in and handles that on purpose.
How Condensation Forms in Compressed Air
The separation of dry air and wet air at nozzle will make all the difference between having a tool for years versus a tool that falls apart. Here’s what happens: Ambient air enters an air compressor; that air is never completely dry. As it gets compressed, the temperature of the air rise.
As the air travel down the hose it cools and the moisture in the air condenses into liquid form. Unless you address this condensation, you’re sending water through your equipment. This is one of the main causes of tool failure where humidity exist.
Manual Gravity Drain Valves
The simplest answer is a gravity drain. It’s nothing fancy. At low end of your tank or air line, you add a fitting and the trap catch the condensate for manual draining.
You do not need electricity. No cost. It is simple.
The catch is that you have to do it. So many people don’t. This happen until water leads to rust in the tank.
Automatic Air Tank Drains
Simplicity beats complexity when consistency matter. For others who want low-maintenance, there’s the auto drain option. These units is designed to sense when to dump the water or run on a timed basis.
Examples include Quick model or Parker units. You don’t have to lift a finger. Your system is always kept dry.
The down side is increased complexity and expense. Now you have an electronic component that may fails. And you need to vent the drain port so the pool of waste water doesn’t sit on shop floor.
Inline Air Filters and Coalescing Options
It is a small convenience with a small price tag. Many shops also add a layer of protection called inline filters. Inline filters goes between your compressor and your tools.
They capture any remaining moisture and particle. For very small water particles, there are coalescing filter made by companies like Parker or FumeX. These is used for air brakes or spray finishing applications.
But they limit airflow. So be sure to get a filter sized for your compressor’s CFM output. Otherwise, you’ll be starving your tools for air.
Passive Condensation Loops for Long Runs
Pressure vs. Purity In long air runs, I’ve also seen people use passive condensation loops. Essentially, you establish a low spot along your hose line. As that water accumulate, it pool at this spot rather than continuing onward.
To improve this further, you could of add a manual drain valve at the very bottom of the loop. When the hose has reached its limit and you need a way to keep water from entering your system, it’s an effective option. However, it takes some forethought during installation.
Choosing the Right Drainage System
What type of system? That all depends on what you have. If it’s just a garage compressor, maybe you can manually drain it.
For a shop with several station, an inline filter and auto drains is the ticket. Having both works best to defend against moisture damage. Don’t scrimp here.
A couple bucks for good drainage will save you hundreds in tool repair costs down the road. Condensation happen in a compressed air system; this is unavoidable. If left unattended, it’ll cause issue.
Knowing the basics of how condensate forms and choosing the right trap helps prevent damage. You’ll enjoy longer life for your tools, enhanced performance and cleaner operation. The air will do what it’s supposed to, if you keep the water out.
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