Product Summary

Universal Fit, 2 psi Pressure Rating, Polished

  • A residual valve acts like a one-way valve (check valve) to maintain brake system pressure and eliminate a spongy pedal
  • This 2 psi version is used for disc brakes and provides just enough residual pressure to firm up the pedal, yet not too much that the brakes drag
  • The valve is installed inline between the master cylinder and disc brake calipers
  • Required on low mounted master cylinder such as under the floor locations but these also enhance brake systems with a high mounted master cylinder
  • 1/8" NPT female thread connections make this a very universal item. Use inverted flare adapters when connecting this valve to a 3/16" brake line

Key Specs

MFG. Part #91031346
BrandSpeedway Motors

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Ever had problems with a spongy pedal or slow, unresponsive brakes? If so, you may need a residual pressure valve installed in your brake line. A redesidual valve acts like a one-way or check valve to maintain brake system pressure to eliminate the problems of a spongy pedal. This 2 PSI residual valve is installed inline between the master cylinder and disc brake calipers to keep 2 PSI of residual pressure at the caliper after the brake pedal is released. This ensures that you will have a high, firm pedal next time you press the brake pedal.

If your master cylinder is located below the floorboard, installing a 2 PSI residual valve is highly recommended. If your master cylinder is mounted on the firewall, a residual valve is generally not needed because gravity will provide a natural residual pressure within the brake line.

Our residual pressure valve features a fully polished finish with a 1/8" NPT port at each end. Use 2 PSI residual valves for disc brake applications only. Inverted flare or AN threaded adapter fittings to the 1/8" NPT female thread will be required and are noted below and available as required.

Learn more about the proper uses of residual valves by reading our tech article.Brake System Selection.  



MFG. Part #91031346
BrandSpeedway Motors
Pressure Rating2 psi
Inlet Fitting1/8" NPT Female
Outlet Fitting1/8" NPT Female
Material TypeAluminum
NotesUse 2 PSI for disc brake applications.
Sold in QuantityEach