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
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Key Specs

Pressure Rating2 psi
Inlet Fitting1/8" NPT Female
Outlet Fitting1/8" NPT Female
Material TypeAluminum
FinishPolished
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Speedway Motors 91031346 Details

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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.  

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Speedway Motors 91031346 Specifications

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

Ratings & Reviews

4.8

9 Reviews

Overall Assessment

Customers value the product for its excellent finish, high functionality, and ideal size for their systems. The component excels in aspects of usability and material quality, as seen in the favorable IN and OUT etched markings durability. Also, it outperforms competitors in setting up brake systems and dealing with situations where master cylinders are positioned below caliper level. Customers also recommend the product for its looks, attesting that it performs its function outstandingly. Overwhelmingly, customers would purchase the product again, indicating its superior quality and practicality.

4.8

9 reviews

5

7

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I WOULD NOT BUY THISWORKS AGAIN

5.0

5 months ago

Tucson T

Tucson AZ

Verified

WORKS AS NEEDED

Would Recommend

yes

5.0

7 months ago

horn

merced cal

Verified

firm brake pedal

Nice finish

5.0

5 years ago

Jeff

Washington

Verified

looks great and works well.

Would Recommend

I would buy this again

5.0

6 years ago

joe

clarkston mi.

Verified

Part works just fine

Would Recommend

Good product

4.0

9 years ago

Craig

MI

Verified

Good product for initial set up of brake system.

Would Recommend

looks good

5.0

10 years ago

Sully

Watertown Ct.

Verified

good function and looks

Would Recommend

Compact size

5.0

10 years ago

Mr. H.

Barboursville, VA

Verified

The small cylindrical size fits well in my plumbing system and the etched IN and OUT markings won't wear off and confuse me if I ever have to remove and reinstall it.

Would Recommend

WORKS GREAT

5.0

10 years ago

1934

DALLAS TEXAS

Verified

THIS IS A GOOD PRODUCT

Would Recommend

Speedway polished 2lb residual valve

4.0

16 years ago

Ryan Racing

El Segundo, CA

My master cylinders are mounted below the level of the calipers.

Would Recommend

Showing 9 of 9 reviews

Questions & Answers

1 Question • 1 Answer

Which direction is the residual valve mounted? The residual valve has marked with an "in" and an "out" side. Does it install from the Proportion valve to the "in" side and then "out" side to the brake calipers?

by wooddrva

• 11 years ago

1 answer

1 of 1 questions shown

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