Review on PQY Brake Bias Proportioning Valve Pressure Regulator with 1/8NPT Inlet & Outlet - Enhanced Brake Adjustment Features by Chris Bertoli

Ordered two valves for two different cars. The first valve is installed, one of the brass fitting adapters is fully screwed in. It was leaking like crazy and by no means is this a reliable fitting. 2 the valve did not let any liquid through. Manually or under pressure. Each setting resulted in zero flow. In air or liquid. I took the second valve I got for another car and installed it in its place. This valve dripped immediately and the threading got better. BETTER, but not perfect. You get the best part for the price. They are much bigger and worth a look.