Pneumatic valves release air from the compressor in a controlled manner. There are two types of pneumatic valves- those that release air to atmosphere and those that release air to a storage tank. The release of air to atmosphere is used when the compressed air is not going to be used immediately and can be released into the atmosphere. The release of air to a storage tank is used when the compressed air is going to be used immediately or in the near future and needs to be stored in a tank for quick and easy access. ACS offers pneumatic valves to help you keep your machinery moving. Order yours today!