What is reliefe valve? and expantion pipe? Home › Forums › Public Forums › General Plumbing › What is reliefe valve? and expantion pipe? This topic has 2 replies, 3 voices, and was last updated 19 years, 10 months ago by Sachi. Viewing 2 reply threads Author Posts 9 Jun 2004 at 11:16 pm #277263 darren mck Please teach me what reliefe valve and expantion pipe are. What does it look like? Thanks 10 Jun 2004 at 12:42 am #295867 DUNBARParticipant http://www.wattsreg.com Click on products, then Thermal Expansion. This will explain your situation. View through that website, it covers all basis in regards to what your looking for. Click on T&P advisory also. “Your best interest is secured by making the right decisions the first time.” » This message has been edited by DUNBAR on 10 June 2004 10 Jun 2004 at 8:17 pm #295868 SachiParticipant Thank you Dunbar. Momo Author Posts Viewing 2 reply threads You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In