Strange Adjustable Proportioning Valve


Part Number: B3369

Racing brake systems
Proportionally reduces line pressure

Most brake systems require different pressures between front and rear brakes
To efficiently stop a vehicle, all wheels should approach lock-up at the same time
When fronts lock-up first, steering becomes ineffective
If the rear do, the back end of the car will want to swing around
By varying bias, the vehicles stopping ability can be optimized

This valve is plumbed into the line needing less pressure
Incoming pressure will be reduced to outlet port based on knob adjustment
When operated fully open, it will still reduce some line pressure

In Drag race applications, it is normally placed in the front line
This is assuming that the vehicle has four wheel disc brakes
When using front disc and rear drum, it may need to be in the rear line

Aluminum valve body clear anodized for corrosion resistance
Mounting holes on 1″ centers for 1/4″ bolts
57% maximum line pressure reduction
1/8″ NPT inlet and outlet ports
3/16″ inverted flare x 1/8″ NPT adapters


Related Components
Pressure test gauge……………… P2360
2 lb residual pressure valve….. B3366
10 lb residual pressure valve… B3367


Adjustable Proportioning Valve

Additional information

Weight 0.60 lbs
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