I did a search to find more information on installing delivery valves, but wasn't able to find the answers I'm looking for. I will be doing an install soon using the proper socket that is being offered by Piers. I would like to know approximately how much time this should take. I realize it depends on the individual, but keep in mind it will be a first for me and I tend to be very cautious when taking on a project that I haven't done before. I'm also wondering if there are any little tricks that any of you have or any precautions I need to take note of. I didn't ask Piers if there is an instruction sheet that comes with the valves. I can only assume there is. Perhaps the factory repair manual has good step by step instructions also. Thanks