I am a new pool owner and I am replacing a multi-port valve (Hayward SP-710XR50). I have little experience, but have been working on my pool and learning as I go. The part did not bring instructions. The process of removing the bulkhead locknuts from the filter was fairly easy and I anticipate that it will also be easy to attach the new ones to the filter. I am perplexed about how I can remove the existing the fixture from pump and return sections that are connected to the pipes and installing the new fixture. Below is a picture for your reference. Please let me know if you can guide me. I don't know much terminology, but I am a fast learner. Anything you share would be greatly appreciated. Thanks for your help!