Correctly discharging and disposing of the condensate which occurs in a compressed air network is a critical part of keeping the network functioning properly and at the the correct network pressure. This all too often overlooked part of the process is essential to keep the network running at peak efficiency, this section explains the role of the condensate drain in the compressed air network.
As we have seen, compressed air contains impurities such as water, oil and tiny particles which occur naturally in the air around us or which are introduced into the air stream by the compression process, like rust and pipe scale. CompAir air treatment products remove these impurities, air dryers, use different technologies to dry the air & remove the water vapour and air filters, remove solid particles.
Once water and particles are removed from the airstream, it's the job of the condensate drain to drain away this condensate mixture so that it can be disposed of in the correct way. The condensate is usually drained into an oil/water separator so that the oil can be disposed of correctly. Only then is the compressed air ready to be used by the production process. The condensate drain is a special type of valve which can run in a variety of ways depending on the type of installation. For example the drain can be set to run on a timer to drain the condensate away at defined intervals, unpowered drains can work without a power source, a compressed air energy saver can be connected to say a light switch which will shut the drain off when the lights are switched out at the end of a shift to avoid pressure losses (read more below).