This is a problem that sometimes defies a solution, just clamp the hose into the standpipe. I had to do this 30 years ago on my GE combo that’s in my kitchen.
If you use a drain line check valve you will not have problems with water, either siphoning out of the machine or sucking back from the drainage system When the machine is agitating in the pumps running in the reverse direction.
If you use a drain line check valve you will not have problems with water, either siphoning out of the machine or sucking back from the drainage system When the machine is agitating in the pumps running in the reverse direction.