PV4 Disc/Disc Proportioning Valve - Brass

Part Name: Disc/Disc Proportioning Valve - Brass

Type: PV4

Parameters:
(1) 3/8-24" ports for the front brakes
(2) 9/16-18" port for the rear brakes

 

Application For:

1964-1972 Buick Skylark 1964-1969 Buick Special 1967-1969 Chevrolet Camaro 1964-1972 Chevrolet Chevelle 1964- 1967 Cherolet EI Camino 1964- 1967 Chevrolet Malibu 1970- 1972 Chevrolet Monte Carlo 1964-1971 Oldsmobile 442 1964-1972 Oldsmobile Cutlass 1964-1972 Oldsmobile F85 1967-1969 Pontiac Firebird 1964-1972 Pontiac GTO 1964-1972 Pontiac Lemans 1964-1970 Pontiac Tempest

 

 

 

What Does the Proportioning Valve Do for My Brakes?

Your car’s braking system is intricate and complex. There’s a lot more to braking systems than calipers and rotors. One crucial aspect of a vehicle’s braking system is the proportioning valve. Knowing the function and importance of your brake proportioning valve is essential to understanding how your car works and knowing when to get it checked out by a technician.

 

 

Function and Purpose of the Proportioning Valve

The proportioning valve typically connects the master cylinder to the rest of the braking system, but sometimes it is independent of the cylinder. This valve is necessary for optimizing front-to-rear bias, also referred to as brake balance. It is a spring-loaded component that activates when fluid pressure builds when you step on the brake pedal. Then, the valve’s plunger unseats and fluid rushes into the calibrated range. Once this happens, the spring gets compressed and the plunger blocks the fluid from passing through. Even pressure distribution among the front and rear of your vehicle is important for safe and reliable braking performance.