JP Group Brake Residual Pressure Valve, 2 PSI, 1/8" NPT Male-Female | VW Bus 1968–1972 & Disc Conversions | OE 211 611 805 E (JP-8685-0)
Couldn't load pickup availability
JP Group Brake Residual Pressure Valve, 2 PSI, 1/8" NPT — VW Bus 1968–1972 (JP-8685-0)
Short answer: JP-8685-0 is a 2 PSI brake residual pressure (check) valve with 1/8-inch NPT male and female threads. EMPI lists it for the 1968–1972 VW Bus and Pickup, and it is the valve type used in disc brake circuits. It cross-references to VW OE 211 611 805 E, JP Group ref 8161250200. Sold each.
Fitment
| Years | Vehicle | Notes |
|---|---|---|
| 1968–1972 | VW Bus (Bay Window) & Pickup | Per EMPI, OE 211 611 805 E. Check where your valve sits: master cylinder outlet or in-line |
| Any | Disc brake conversions on air-cooled VWs | 2 PSI is the disc-circuit rating; 1/8" NPT ports need suitable adapters for metric bubble-flare lines |
| Any | Drum brake circuits | Not this valve: drum circuits normally use a 10 PSI valve |
| 1973–1979 | Late Bay Window Bus | Not confirmed; check your OE number |
Specifications
| Spec | Value |
|---|---|
| Part number | JP Group JP-8685-0 |
| OE reference | 211 611 805 E |
| JP Group reference | 8161250200 |
| UPC | 707924540192 |
| Residual pressure | 2 PSI |
| Threads | 1/8" NPT, male one end, female the other |
| Sold as | Each |
| Weight | 0.05 lb (EMPI) |
What's Included
- One 2 PSI residual pressure valve
Not Included
- Brake line adapters or fittings
- Thread sealant
- Brake fluid
Why It Matters
A residual pressure valve holds a small amount of pressure in the brake lines after you release the pedal. In a disc circuit, 2 PSI keeps the pads close to the rotor without dragging, so the pedal is firm and the first part of the stroke does useful work. When a residual valve sticks open you get a long or soft pedal and may need to pump it; when it sticks shut the brakes can drag and run hot. On disc conversions and on master cylinders mounted low in the chassis, a 2 PSI valve also stops fluid draining back to the reservoir. The wrong rating is a common mistake: 10 PSI belongs in a drum circuit, and fitting it to discs causes drag.
Installation Notes
- Note the flow direction before removing the old valve; install the new one the same way (outlet toward the wheels).
- Use brake-rated thread sealant on NPT threads only, never on flare seats, and keep sealant out of the bore.
- Use proper adapters when joining 1/8" NPT to metric bubble-flare lines.
- Bleed the system fully after installation and check for leaks under firm pedal pressure.
Frequently Asked Questions
Does it fit my 1970 Bus?
EMPI lists it for 1968–1972 Buses. Compare the threads and location with your old valve before ordering.
2 PSI or 10 PSI — which do I need?
Use 2 PSI on disc brake circuits and 10 PSI on drum brake circuits.
Is this the same as OE 211 611 805 E?
Yes. JP Group cross-references JP-8685-0 to 211 611 805 E.
What thread does it have?
1/8" NPT, male on one end and female on the other.
Can I use it on a disc brake conversion?
Yes. That is the most common use for a 2 PSI valve. You may need adapters for your lines.
Is it new?
Yes, a new JP Group part.
Explore Related Categories
Brakes & Components VW Bus Parts
California Prop 65 Warning: This product can expose you to chemicals including lead and/or lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov. Legal for use on pre-pollution-controlled vehicles only.
