More Washing Machine Greywater Fun
...miting the combined horizontal (using the 50 feet = 10 inches formula) and vertical run to the equivalent height of where the water would normally empty out into the standpipe near the top of the machine. 3. Install a three way valve at the standpipe to allow diverting the water to the sewer. 4. The pipe may need to be vented (either by running a vent pipe up or using a swing check valve as a vent) if the end of the pipe is lower than the water le...