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Proportioning Valve W/Bracket & Lines Undermount, Firewall Mount, 1/2x20 & 9/16x18 Ports, Gold

CPP high-performance automotive parts for classic cars
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Part #
PVKN-A1
In Stock
$99.00
2 or 4 Wheel Disc, Aluminum, Undermount, Firewall Mount, Gold Zinc Bracket, 1/2x20 & 9/16x18 Master Ports
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Prop 65 warning
The CPP Proportioning Valve W/Bracket & Lines (Part Number PVKN-A1) is designed for 2 or 4 wheel disc systems. It features an aluminum undermount and firewall mount. Includes a gold zinc bracket. Equipped with 1/2x20 and 9/16x18 master ports.
More Information
Product Name Proportioning Valve W/Bracket & Lines Undermount, Firewall Mount, 1/2x20 & 9/16x18 Ports, Gold SKU PVKN-A1
Material Aluminum Finish Clear
Adjustable No Works With 2 Wheel Disc Yes
Works With 4 Wheel Disc Yes Bracket And Lines Included Yes
Brake Warning Light Switch Wire Included No Brake Light Switch Included No
Master Cylinder Line Size 9/16x18 Rear and 1/2x20 Front Bracket Finish Yellow Zinc
Warranty Yes Prop65 Yes
Brand CPP Mounting Location Undermount
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Customer Questions
Does a 4 wheel disc need a different proportioning valve?
Not when you buy one of our CPP proportioning valves. Our proportioning valve will work with both disc/drum or disc/disc applications. 
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What does a brake proportioning valve do?
A brake proportioning valve regulates the brake fluid pressure between the front and rear brakes, ensuring balanced braking power.  
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What size fitting is the back of the proportioning valve?
The fitting size is 9/16-18" but we sell a kit that would accommodate any popular size adapter (part number CP2091) which includes 3/8-24", 7/16-24", and 1/2-20".
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Do I need a proportioning valve when upgrading from drum to disc?
Yes! A proportioning valve is needed to ensure the proper amount of brake fluid pressure is going to the front and rear wheels.  
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PVK instructions

This kit includes:

  1. Fixed

  2. P/N: 10880-BLU

    • Description: Inv Fitting 3/16in Inv Plug Blue Zinc
    • Quantity: 1

  3. P/N: SP6

    • Description: Steel Brake Line Tube Nuts with 9/16 x 18 Threads 1/4in Tube Size
    • Quantity: 1

  4. P/N: C4-6C17

    • Description: 5/16in-18 X 1-3/4in Nc Hex Cap G8
    • Quantity: 2

  5. P/N: C2-6L

    • Description: 5/16in Split Lock Washer G8 (Ea)
    • Quantity: 2

  6. P/N: PV-24AH

    • Description: Aluminum Proportioning Valve for 2 & 4 Wheel Disc (2 Port)
    • Quantity: 1

  7. P/N: C2-6S

    • Description: 5/16in Sae Flat Washer G8 (Ea)
    • Quantity: 2

  8. P/N: C2-6C

    • Description: 5/16in-18 Fin Hex Nut G8 (Ea)
    • Quantity: 2

  9. P/N: 11028

    • Description: Prop Valve Under Mount Bracket Yellow Zinc
    • Quantity: 1

  10. P/N: PVL-N

    • Description: Proportioning Valve Lines to the Cylinder Undermount, 9/16 x 18 rear and 1/2 x 20 Front
    • Quantity: 1
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