I bought this to keep moisture out of the R37121-600-VS 1/4" regulator on my 30 gallon auto compressor. I use an airbrush compressor. This only runs the compressor a few times. per day but the unit is pressurized throughout the day. So I like components that hold pressure - air leaks are a problem. This filter holds pressure fairly well with little noticeable loss every other day. The filter seems carefully designed and good to be made. It's lightweight but doesn't look cheap or feel cheap. I think it will last a long time. The case is plastic with aluminum internals. there is a pin on the bottom that can be pressed, to release air and water while the compressor is pressurized, when the compressor is depressurized you can remove the bowl, this filter is economical, holds the pressure and works well, I recommend e him.
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