How far can the trap be from the washing machine? The trap now is about five feet from the waste line and the machine is next to it. I want to move the machine 10 feet from the trap, but don't want to relocate the trap. Is that OK?
Typically washers discharge into a standpipe, which extends 18"-42" above the trap weir. The plumbing can then continue on 5'-8' before there's a vent (5' for 1¼" pipe, 6' for 1½" pipe, 8' for 2" pipe).