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Description
Disc/Drum Proportioning Valve - Brass PV2The PV2 Brake Proportioning Valve is a high quality component designed to optimize brake pressure distribution in vehicles equipped with front disc and rear drum brakes. This valve ensures balanced braking performance, enhancing safety and control during vehicle operation. Key Features: Compatibility: Suitable for GM and Ford street rods, classic trucks, and muscle cars with front disc and rear drum brake setups. Durable Construction: Manufactured
The PV2 Brake Proportioning Valve is a high-quality component designed to optimize brake pressure distribution in vehicles equipped with front disc and rear drum brakes. This valve ensures balanced braking performance, enhancing safety and control during vehicle operation.
Key Features:
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Compatibility: Suitable for GM and Ford street rods, classic trucks, and muscle cars with front disc and rear drum brake setups.
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Durable Construction: Manufactured from high-quality brass, offering excellent durability and corrosion resistance.
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Integrated Safety Switch: Equipped with a safety switch designed to detect unequal or low brake pressure, alerting the driver to potential brake system issues.
Specifications:
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Material: Brass
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Inlet Ports:
- Front Master Cylinder (M/C): 1/2"-20
- Rear Master Cylinder (M/C): 7/16"-24
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Outlet Ports:
- Front Brakes (2 ports): 3/8"-24
- Rear Brakes: 9/16"-18
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Finish: Natural brass
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Dimensions:
- Length: Approximately 5.4 inches
- Width: Approximately 1.125 inches
- Height: Approximately 1.9 inches
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Weight: Approximately 1.5 lbs
Interchange:
- QPV001
Benefits:
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Enhanced Safety: Ensures proper brake pressure distribution, reducing the risk of rear-wheel lockup during sudden stops.
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Restoration Accuracy: Ideal for restoring classic vehicles to their original braking specifications.
Installation Notes:
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Professional installation is recommended to ensure optimal performance and safety.
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After installation, properly bleed the brake system to remove any air pockets.
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Verify compatibility with your vehicle's brake system before installation.
Upgrade your vehicle's braking system with the PV2 Brake Proportioning Valve, offering reliable performance and enhanced safety for your classic ride.
Application:
| Year | Make | Model |
|---|---|---|
| 1964-1972 | Buick | Skylark |
| 1964-1969 | Buick | Special |
| 1967-1969 | Chevrolet | Camaro |
| 1964-1972 | Chevrolet | Chevelle |
| 1964-1972 | Chevrolet | El Camino |
| 1964-1967 | Chevrolet | Malibu |
| 1970-1972 | Chevrolet | Monte Carlo |
| 1964-1971 | Oldsmobile | 442 |
| 1964-1972 | Oldsmobile | Cutlass |
| 1964-1972 | Oldsmobile | F85 |
| 1964-1972 | Oldsmobile | Vista Cruiser |
| 1967-1969 | Pontiac | Firebird |
| 1964-1972 | Pontiac | GTO |
| 1964-1972 | Pontiac | Lemans |
| 1964-1970 | Pontiac | Tempest |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 25 reviews
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Product Reviews
★★★★★ 5
Great!
Style: 7-in-2 4K@30Hz
I love that this thing adds extra ports to a very limited MacBook without the dangling terrible looking cord. The slim profile is a plus too. Additionally same color for aesthetics. Looks and performs great.
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Reviewed in the United States on June 9, 2026
★★★★★ 5
Great 10gbps USB-C Hub, worked with Anker support through compat issues with PD4 iteration 1
Original Review (updates below):
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The moment I noticed this thing on Amazon, I bought it and it literally just arrived. Finally, 4K60 over just USB-C with other ports (including making up to 10Gbps available to them) for a reasonable price. Unfortunately, the first two things I've done with it were both disappointing. I'll cut to the chase, the power delivery pass through isn't working with one of their own chargers.
The first device I tried connecting this with is my Anker PD4 with one USB-C cable as the only thing plugged into it so I can test the truly up to 100W (-15 for its own power) claims. I've tried connecting it with Apple's 2m USB-C charge cable (100w capable) and an equivalent CableMatters cable that also supports 100W. When plugged directly into my laptop, both of these cables immediately start charging it and show up as 100W power sources. When this Anker hub is plugged in and either of them is connected to the power delivery port on the side of it, the laptop does not charge (laptop is a 16" Macbook Pro, I've tried multiple ports just for the heck of it).
My second complaint is that when absolutely nothing is plugged into it, it becomes fairly warm to the touch. Why, when it's doing nothing, is it hot? I'm clearly not running data or even power through it so I have low hopes for it under load.
The fact that it doesn't work in exactly the scenario they want it to most (a MacBook Pro with one of their own chargers) seems like a pretty big fail. I've got lots of USB-C things though so I thought I'd grab a couple and try those. Using an Apple 96W USB-C charger, the device does pass through power delivery properly. It shows up as providing 79W to the laptop (siphoning off 17W in this instance). I also have a 56W Aukey charger that splits power between a USB-A port and a USB-C port that can provide 45W of power delivery. When plugged into that charger it does appear to work as well and appears in macOS as a 30W power source.
Maybe the problem is the Anker PD4? But it works fine providing power to the laptop directly. Would love to hear from Anker about these two products working together and what I should actually expect. Having it be unreliable for power delivery isn't great, but power and heat aside (it is getting a little bit warmer now that it's providing power from the Apple power adapter, but still definitely holdable), the hardware looks and feels good and the cable feels durable. Worth also noting that there's a white LED ring on the side of it that appears to be always on when it's plugged in. Don't know why it needs an LED.
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Update, June 22, 2020:
I've done some more testing and Anker has reached out to me to investigate what might be the issue. I can say that the hub works as I would expect from a quick test with my iPad Pro 11" with the above functioning chargers. It was able to pass through power with the 96W Apple Charger on the other end to both the iPad port as well as a Magic Keyboard port. The ethernet adapter showed up in iOS settings and an external drive was functional. When connected via the Magic Keyboard, which is a power only connection, as expected it provided only power.
Still no power passthrough of any kind when connected to the PD4.
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Update July 1, 2020:
I've written back and forth with Anker and they've sent me a replacement hub. It also doesn't work with the PD4. I've tried multiple USB-C cables but they have also shipped a cable to test with it. For now I'm increasing the review from 2 to 3 stars because I am more and more suspicious about the PD4 and less about this hub. They claim that they have tested the setup I have separately without issue, and I've sent video showing the problems I've encountered, so the troubleshooting is ongoing.
Have had a chance to use Ethernet on it without issue. Still need to try to test out its throughput when trying to use a 10Gbps USB-C enclosure and a 4K60 monitor at the same time (+ ethernet).
More updates to come.
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Update July 10, 2020:
I've continued to talk with Anker support and they shipped me a replacement PD4. The one I had was labeled as "Iteration 1" on its barcode, the one I got back was labeled "Iteration 2". I tested it out and it works perfectly with this hub, passing through the correct amount of power to multiple Macbook Pros and fast charging an iPad Pro. Clearly the fault doesn't lie with this hub and is instead an issue with the first iteration PD4, so I'm updating my review accordingly. Working with Anker support was great.
I've also been able to test USB-C throughput (without driving a display as well so far) and it properly utilizes 10Gbps. I've attached some extra images showing various devices connected to it (keyboard dongle, SD card, USB-C 10Gbps external SSD enclosure, USB sound card, ethernet).
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Reviewed in the United States on June 19, 2020
★★★★★ 5
Excellent Quality and Reliable Performance from Anker’s 8-in-1 USB-C Hub
I’m really impressed with this Anker USB-C Hub with Ethernet (8-in-1). The build quality feels premium, setup was completely plug-and-play, and all ports work flawlessly with my laptop. The Ethernet connection is stable and fast, which has been perfect for work calls and large file transfers.
I also love how compact and portable it is while still offering plenty of connectivity options. HDMI output looks great, USB ports transfer quickly, and the SD card reader is very convenient for photo and video work.
Anker continues to deliver reliable products, and this hub is no exception. Highly recommended if you need a dependable all-in-one USB-C hub for productivity or travel.
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Reviewed in the United States on May 20, 2026
★★★★★ 5
Works great (quick test)
Just got this and tested and works great
I attached to my MacBook with Ethernet and had a solid connection
I tested my steam deck by plugging in Ethernet then adding HDMI then adding power and everything worked as it was plugged in
I tested my Nintendo switch even though it clearly states it's not supported and it did not work at all. Even the power pass through did nothing. This is not even remotely a problem since it was advertised as such but I figured it was with a try and worth noting
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Reviewed in the United States on May 31, 2026
★★★★★ 4
Despite some caveats; this is a versatile hub
The Anker 555 8-in-1 USB-C Hub is a good buy if you’re looking for a hub from a reputable brand. I use it with an M1 Macbook Air, and it has been reliable so far. This hub has the following ports: 1 USB-C data port, 1 USB-C Power Delivery Port, 2 USB-A data ports, 1 HDMI port, an Ethernet port, and a microSD/SD card reader.
Charging, PD (Power Delivery):
To keep my Macbook charging, I connect a PD (Power Delivery) capable cable to the USB-C port meant for PD. (The other USB-C Port on this hub is meant only for data.) Once connected, the hub will eventually become warm to the touch, but this hasn’t caused any problems so far.
Video Performance - no problems in 1440p
I can connect my 1440p 144hz monitor to this hub’s HDMI port and my Macbook Air has no problem outputting a refresh speed of 144hz, as well the lower refresh rates of 120hz and 60hz. (I do not have a 4k monitor, so I could not test that.)
USB-A Ports - works flawlessly
I’ve tried keyboards, USB Drives, and even gaming Mice. All of these devices work as expected when connected to the USB-A Ports.
Ethernet - Excellent speed
I've connect this hub using an Ethernet cable to Gigabit speed Internet. The speed is just as fast as other computers on the network, and there is no slowdown at all, even with most of the ports on the hub being used.
Gaming Keyboards with USB-C connectors - some issues.
Some peripherals such as keyboards with USB-C connectors may not work on the USB-C ports on this hub. I tried using a Glorious GMMK Mechanical Keyboard and it did not work with this hub’s USB-C ports. (Of course you could try to simply use a USB-C to USB-A adaptor and then connect via the other USB ports on the hub instead.)
Extension Cable - Use a Thunderbolt 4 cable
Although this is totally optional, I like to use a small, 6-inch USB-C Extension cable to allow this hub to have more slack away from my laptop when connected. To allow this to work, I had to use a Thunderbolt 4 extension cable. I've tried other cables such as a Thunderbolt 3 extension cable. However, some of the attached devices on the hub were not recognized. Only the the Thunderbolt 4 extension cable allowed all my attached devices to be recognized.
Other devices
I have successfully connected an external SSD via the USB-C data port on this hub. I also regularly use an external DAC using the USB-A ports connecting to an IFI HIP DAC. Both of these devices work perfectly with this hub. Data transfer speed is rated at 10Gbs, though I haven't actually confirmed that. It works well enough for my purposes of transferring text documents and the occasional batch of vacation photos to my external SSD.
Conclusion
This hub from Anker is rated at 10Gbs which is plenty for me. But if you regularly transfer large amounts of data (like for video editing), I would instead recommend a powered docking station such as those from CalDigit. But for me, this portable hub does everything I need, and for much less money.
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Reviewed in the United States on January 28, 2023