It happens that it turns out to be very short.

If the pipes are cast -iron, then the first thing is removed the siphon. Instead, an adapter made of rubber is mounted instead (designed to switch from cast iron pipes to plastic). Next, a plastic oblique tee is inserted into the same adapter. Another small 24 mm adapter is mounted in his withdrawal. It is in it that the hose is set. It happens that it turns out to be very short. Therefore, you need to purchase a hose of the desired length in a special store.