Maximum PSI rating is on the outside rating of the pipe
It should, are you sure your pvc pipe is round
Water flow rate half inch PVC pipe 65 psi?
Probably the wrong size flange. Is the flange a toilet collar? If so the pipe is probably 4 inch.
this depends on the class of the pipe as the higher the class the thicker the pipe
Most lumber yards should have it.
1.5-inch by 440 feet of PVC pipe holds 40.4 gallons of water.
1 inch PVC pipe is about 47 cents a foot where I live in western Canada .
The price of PVC pipe varies from retailer to retailer. Home depot and Lowes sells most sizes for under three dollars a foot. 4 inch PVC pipe shouldn't cost more than $20 for a ten foot section.
Put an adapter between them. You can't transform it, you can replace it or change it at some point to 2 inch and continue with 2 inch.
3" Min - 4" is Max
You can put up to a 2 inch pipe into a 4 inch. If you are putting 4 inch to 4 inch, either take out a section of the cast and put the PVC in or cut out a section and connect the PVC to the cast with rubber sleeves meant for this. You can use a saddle clamp for the 2 inch. It is a half round piece of PVC with a 2 inch connection in it. It is held on with two U bolts that go around the cast pipe. Put it where you need it and mark the 2 inch hole on the cast. Drill a series of 1/8 inch holes around this circle. when you get them all drilled, you can break out the plug. Try to keep it from falling into the cast pipe. Put the saddle clamp on and connect the PVC pipe as needed. Seal the saddle clamp to the cast pipe with plumbers putty.