Classic Performance Products Proportioning Valve Disc/Drum Or Disc/Disc Natural With Wire Pigtail

When upgrading your stock drum brakes to discs, a proportioning valve is needed to meter fluid between the front and rear brakes correctly. This proportioning valve (PVKSA1) uses our new Hybrid Proportioning valves, which work for both disc/drum and disc/disc applications. Unlike conventional four wheel disc proportioning valves, the new design valve also controls the front brake pressures.

Features and Benefits:
- Works on disc/disc and disc/drum setups
- Includes bracket
- Includes low pressure brake warning switch
- Includes lines to master cylinder

When your brakes are first applied, the rear brakes act with more brake pressure. The purpose is to activate the rear brakes first, and maintain a slightly higher rear brake pressure as the braking force increases up to the split point. After the brake pressure has risen to the split point, the rate of rise within rear brake system will decrease to prevent rear wheel lockup.

Residual valves will not be necessary with 4 wheel disc brakes. The front brake will maintain a small residual pressure, so they are quicker to act, while their action is better controlled. The failsafe isolation valve function remains 100% intact. These setups are available in aluminum, brass, black and chrome. 1967 and newer vehicles require the pressure differential warning light socket and pigtail as an important safety item.