This is a split union that is screwed together, and comes with the screw needed. This fits over an opening on the body of the Filter near the bottom. The union helps with allowing you to connect your external plumbing to the filter.
SOAP Fault: (faultcode: aws:Client.RequestThrottled, faultstring: AWS Access Key ID: AKIAJVUERCW2YISPWH2A. You are submitting requests too quickly. Please retry your requests at a slower rate.)