Either have the washing machines pump it up Or use a sump designed to handle washing machine waste lint, volume etc
End of clothes washer drain 1 1/2 - 2" above rim of sink it drains into.
There is usually some space around the drain hose where it goes into the drain. This usually allows enough air to get in that it is not a problem. If the washer hose is connected to the drain tight, then yes, there needs to be a vent above that connection. There may already be one above the drain if you follow it up. Most washer drains are fairly close to the main stack which allow for venting. The only question is, Does the washer drain alright? If so, don't worry about it.
A drain plug washer is not necessary unless you have oil leaking from the drain plug.
Connection of the washer drain hose to the tub drain is very important. This will help prevent leaks for example.
The drain from the washer to the main line is getting plugged and the floor drain is easier. Drain cleaner in the floor drain should take care of it.
my washer keep on by passing the spin cycle and will not drain out the water.
my frigidaire affinity washer wont drain
Kitchen sink and washer use same drain line. Drain line clogged causing backup of drainage from washer into kitchen sink. Have drain line unclogged to take care of problem. If drain line not clogged, check for proper venting of drain lines.
To get water to it, and to have it drain
If the drain is adequate size, 3inch, then you could.
check the lid switch it is under the top of the washer and is usually activated by a pin attached to the lid of the washer
They share the same drain and it is becoming clogged. Drain cleaner in both drains should help.