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APV-1 - Adjustable Proportioning Valve - Black

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Product Description

Universal Adjustable Proportioning Valve APV-1
Adjustable proportioning valves are essentially pressure reducing valves and are often utilized in disc/drum, disc/disc and drum/drum braking systems. The valve is used to control front-to-rear brake pressure bias and will work for all types of vehicles. Install this valve between the distribution block and the rear flex hose in the front-to rear rigid brake line.Always use tube wrenches to tighten fittings properly. Final settings of this valve will depend on your particular vehicle, and individual preference.


  • 3/8-24 IFF fitting size
  • “IN” (Stamped on valve) – Rigid brake line from the distribution block to this port. On early cars: the master cylinder rear port to this port.
  • “OUT” (Stamped on valve) – Rigid brake line to the rear flex hose.
  • “DECREASE” – Reduces the brake line pressure to the rear brakes.
  • “INCREASE” – Increases the pressure to the rear brakes.
  • Maximum pressure regulation: 300 psi. Inlet port of valve: 1/8 – 27 NPT
  • Standard adapters: 3/8” – 24 for 3/16” line.
  • Mounting hole diameter: .250” (two).

Fitment Data

Universal Fitment mostly used on Street Rods.

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