DESCRIPTION
Proportioning Valve
--Brass Disc/Drum Prop Valve, Same as the Original GM # 25509419 , PV2 or AC Delco 172-1353
--3/8-24 ports for front left and right caliper and
--9/16-18 port for the rear brakes 1/2-20" & 7/16-18" ports in from the master cylinder.
--This is a universal valve it will work on any vehicle as long as you can hook it up.
Residual Valve
--It is a 10 pound residual pressure valve.
--The valve is used with any drum brake application where the master cylinder is located under the floor.
--When the master cylinder is under the floor, it is usually lower than the drums.
--Gravity and vibration can cause brake fluid to leak back to the master cylinder away from the drums, causing a loss of brake pressure.
--This valve will act as a one way check valve that prevents this type of bleed-back.
--Without it, there is a good chance that the brakes will drag or give out completely!
--This valve also helps keep brake pressure constant in the drums.
--The 10 pound valve will keep brake pressure in the drums at all times, giving better response when you hit your brakes.
--This valve is an inexpensive and necessary addition to your brake system.
--Package: including all items in the picture.
Note: Professional Installation is Highly Recommended. Installation Instruction is NOT Included.
