I agree that a manifold would serve you better but I'm also not sure why you have a bunch of couplings coming off your return pump. I would run the 2" line off your pump into a 2" union and then go from there. Unions will make life much easier if you later need to take sections off for maintenance or make changes. I would go with your 2" line from the return pump, union, line to a manifold with however many branch off's you want, a valve at each branch, followed by a union and then lines to wherever they need to go from there. This way every line can be individually controlled and removed without having to shut the pump down.
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