directly drain clothes washer Home › Forums › Public Forums › General Plumbing › directly drain clothes washer This topic has 1 reply, 2 voices, and was last updated 21 years, 3 months ago by Retired plbg1. Viewing 1 reply thread Author Posts 29 Jul 2003 at 6:29 pm #276799 MasterPlumbersKeymaster I need to remove the washer utility tub to make more room in a small first floor laundry. ( I prefer to find a tub which is 16 inches wide but have not had any success). How do I plumb the washer hose directly into the drain pipe? 30 Jul 2003 at 5:02 pm #294810 Retired plbg1Participant You need a 2″ pipe are bigger with a trap and vent about 30″ above floor. Author Posts Viewing 1 reply thread You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In