A Residual Valve is a special type of one-way check valve. They are used to keep a small amount of pressure in the brake lines. GM Disc Conversion kits Universal rear drum to disc Parking brake cables and parts GM Mopar Universal Hats Rotor only.
Speedmaster Residual Brake Pressure Valve, 10 PSI
Wilwood 260-13784 Red Aluminum Residual Brake Pressure Valve 10 PSI w/ Fittings
Wilwood 260-13784 - Residual Pressure Valve - 10 psi Red
2 psi Residual Pressure Valve for Disc Brake Applications
Disc Drum 2 Pound & 10 Pound Residual Brake Pressure Valve Kit
10 lb residual brake pressure check valve for drum brakes pair 10 lb