Armstrong’s pneumatically operated liquid drainer provides a better return on investment than a timed-cycle or manual drain when you consider the cost of the air wasted by these options. And when you factor in the cost of strainer maintenance, lost dew point and more frequent replacement of these "cheaper" alternatives, the cost-effectiveness of the Armstrong pneumatically operated unit is even more obvious. Not only is it more cost-effective to install and operate, but it also includes quality components to maximize its performance over a long service life.