Kevin the answer is no.
Drain pipe size for washing machine.
In your scenario if a fixture that s farther upstream discharges lots of water that rushes by the wye fitting where your washing machine drain pipe connects the vacuum created by the water rushing past the washing machine branch wye will siphon water from your trap.
What causes washing machine drain to overflow.
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What causes an overflow.
Aside from having a clogged standpipe there are a few other reasons why your washing machine drain might overflow and some of the other most common reasons are.
Several circumstances can cause your washing machine drain pipe to overflow.
The machine pumps the water through the discharge hose and into the drain pipe.
The standard for new washing machine drain sizes according to the universal plumbing code is now 2 inches.
The former requirement of 1 1 2 inch pipe is not enough to handle the fast drainage of modern washers.
The pipe should be between 18 and 30 inches high from the floor while the p trap should be between 6 and 18 inches from the floor.
A washing machine is connected to a drain hose and to hoses that connect to the hot and cold water supply.
That is a vertical length of pipe that connects to a p trap that in turn connects to the drain.
The most likely problem is a clogged drain pipe.
A 2 inch drain pipe is required for all washing machines.
The correct way to drain a washing machine is to install a standpipe.
Although the pipe sizes are generally standard each jurisdiction s building and plumbing codes could have specific requirements for the size of the pipes and how.
In each a is the vent b is the trap arm and c is the drain.
The piping in the photo on the left represents a laundry sink drain while the photo on the right depicts a washing machine s stand pipe.
You only have to remember this the sanitary tee that serves each fixture is the place where the trap arm drain and vent come together.
The inside diameter of the drain pipe should be a minimum of 1.