Assembled, inspected, and packaged in a clean environment, these filter/regulators come sealed in antistatic double bags. The filter and regulator are joined top-to-bottom to fit in the same space as a filter alone. They provide clean compressed air at your required pressure. The filter has a clear bowl, so you can see inside to monitor contents from every direction. The regulator is relieving style, so it exhausts when the downstream pressure exceeds the set pressure. Run a tube from the open drain port to a disposal point, such as a drain pan or waste system.