![Just paid a plumber to replace all cast iron to ABS all the way to the city main. Is it common and to code to use flexible couplings after every Ptrap on Just paid a plumber to replace all cast iron to ABS all the way to the city main. Is it common and to code to use flexible couplings after every Ptrap on](https://preview.redd.it/zb0yn82rp1381.jpg?width=640&crop=smart&auto=webp&s=7e54adf03cf28e5d064a94bf86cea4080a8747df)
Just paid a plumber to replace all cast iron to ABS all the way to the city main. Is it common and to code to use flexible couplings after every Ptrap on
![Fernco 2 in. Service Weight Cast Iron Hub to 2 in. Sch. 40 PVC Compression Donut P22U-205 - The Home Depot Fernco 2 in. Service Weight Cast Iron Hub to 2 in. Sch. 40 PVC Compression Donut P22U-205 - The Home Depot](https://images.thdstatic.com/productImages/c67c257f-0c50-4434-9ff2-f12d34c279b3/svn/black-fernco-cast-iron-fittings-p22u-205-64_1000.jpg)
Fernco 2 in. Service Weight Cast Iron Hub to 2 in. Sch. 40 PVC Compression Donut P22U-205 - The Home Depot
![Just paid a plumber to replace all cast iron to ABS all the way to the city main. Is it common and to code to use flexible couplings after every Ptrap on Just paid a plumber to replace all cast iron to ABS all the way to the city main. Is it common and to code to use flexible couplings after every Ptrap on](https://i.redd.it/6y1yl82rp1381.jpg)