Size and threading were exact match for my existing pool swing-check valve. Only needed to unscrew the rings for the existing value, drop this one in, and then re-tighten the existing rings. Replacement could not have been simpler.The new valve included the PVC slip connectors and threaded rings to allow the valve to be cut in, but I did not use them as valve fit the old connections perfectly.
Rating:
[5 of 5 Stars!]