Ashful
Minister of Fire
At least in the systems I've used, those 90's and 45's can be rotated to make odd angles. IOW, if you don't have enough "rise" space to make the required "run" at 45 degrees, just rotate the elbow halves to change it to 30 degrees. While this technically could be done in a multi-segment elbow like the swept HVAC numbers, I suspect it'd be more leaky and troublesome.Why don't they make long bend 90's like they do for plumbing and hvac.
Last edited: