Proportioning Valve Disc/Drum

This solid brass proportioning valve is crafted for disc/drum brake systems and ensures the perfect brake bias between your front and rear brakes. It’s ideal for hot rods, classic trucks, and swapped vehicles, helping prevent rear-wheel lockup during hard braking. Key Features: Solid brass construction for durability and corrosion resistance Designed for disc front / drum rear systems – automatic pressure adjustment to rear brakes  Standard ports: ½″-20 master cylinder inlet and 7⁄16″-24 master cylinder inlet, with outlets sized for front (3⁄8″–24) and rear (9⁄16″–18) lines  Universal fit – works with most dual-reservoir master cylinders  Ideal for GM & Chevy builds  How It Works: Under normal driving, the valve sends full pressure to all brakes. When pressure exceeds rear brake capability, it reduces fluid flow to the rear to prevent lockup—maintaining a safe, balanced stop . What’s Included: (1) Brass proportioning valve (PV2 style) Pre-threaded ports for easy integration Mounting bracket and warning switch sold separately Install Tip: Mount it close to the master cylinder and use correct fittings for your lines. This valve helps significantly improve stability under hard braking.