We have a project fitting a backflow preventer (Watts 757) where none previously existed.
Due to the tight space available, we would be cutting an existing pipe, and providing an elbow in order to gain some working space, and installing new pipe after the DCVA to an existing pipe end that currently has a grooved cap in place.
Where we cut the pipe, I am anticipating welding a flange to the cut pipe to attach the new elbow with a grooved/flange adapter. The other pipe end created by the cut will require a cap.
What is the best way to seal off this resultant stub?
Is a welded flange the best way to attach to the existing pipe?
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