× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: WANTED- rear brake prop valve 18018429
Posted to Classifieds Forum on 3/22/2018

Mark,

Even though it is called a proportioning valve I believe the actual use/function of that device is to prevent major brake fluid loss due to a major caliper or rubber hose failure downstream of the device in question, that's why there is a reset plunger... Login to read more.