Description
Product Overview
The DOVOSO Brass Proportioning Valve is engineered to provide precise brake force distribution in vehicles that use dual‑reservoir master cylinders. Constructed from high‑quality brass, the valve offers excellent corrosion resistance and durability, ensuring a long service life even in demanding driving conditions. The dual‑port design accommodates both 1/2″ and 7/16″ brake line connections, allowing seamless integration with a wide range of brake systems. With dimensions of 5.7 x 2.7 x 1.3 inches and a weight of 2.14 pounds, the valve is compact yet robust, fitting neatly within the brake assembly without adding unnecessary bulk. The included mounting bracket and connector kit simplify installation, reducing the time and effort required for a professional‑grade repair. Designed to replace part number 172-1353, this valve is a direct fit for many Chevrolet and Buick classic cars and trucks, making it a versatile solution for enthusiasts and mechanics alike.
![[Product front view showing all components]](https://www.flourishme.store/wp-content/uploads/2026/06/ee25d520659c4b9984d226ad2f56451b.jpg)
Usage
This proportioning valve is ideal for vehicles that feature front disc brakes and rear drum brakes, a common configuration in classic American automobiles. By regulating hydraulic pressure between the front and rear circuits, the valve helps prevent wheel lock‑up during hard braking, enhancing vehicle stability and driver confidence. It is particularly beneficial for drivers who frequently navigate steep descents, carry heavy loads, or engage in spirited driving where balanced braking is critical. Installation is straightforward: mount the valve using the supplied bracket, connect the female iron pipe inlet to the master cylinder, and attach the SAE outlet to the brake lines. No additional tools or modifications are required, and the valve operates without the need for batteries or electronic components. After installation, the vehicle will exhibit smoother brake pedal feel, reduced pedal travel, and more predictable stopping distances, especially under high‑load conditions.
Why Choose Us
Choosing DOVOSO means selecting a brand with a reputation for precision engineering and rigorous quality control. Each valve undergoes thorough testing to verify pressure tolerance, leak resistance, and material integrity before it leaves the factory. The brass construction not only provides superior strength but also offers a classic aesthetic that matches the vintage appeal of many restoration projects. DOVOSO stands behind its products with responsive customer support, offering technical assistance, warranty coverage, and a network of service centers ready to address any concerns. Our commitment to continuous improvement ensures that every valve incorporates the latest advancements in brake technology, delivering performance that meets or exceeds OEM specifications. Additionally, the valve’s compatibility with standard brake line sizes eliminates the need for custom adapters, saving time and reducing installation costs. When you purchase this valve, you receive a complete mounting bracket and connector kit, guaranteeing that you have everything needed for a successful upgrade.
Key Features
- Premium brass construction provides excellent corrosion resistance and long‑term durability for reliable brake performance.
- Dual‑port design fits both 1/2″ and 7/16″ brake line connections, ensuring easy compatibility with most dual‑reservoir master cylinders.
- Optimized pressure distribution reduces front wheel lock‑up, improving vehicle stability during hard braking.
- Compact size and included mounting bracket simplify installation without requiring additional modifications.
- Backed by DOVOSO’s dedicated customer support and warranty service for peace of mind.
FAQ
What vehicles are compatible with this proportioning valve?
The valve is designed for classic Chevrolet and Buick models that use dual‑reservoir master cylinders, especially those with front disc and rear drum brake configurations. It replaces part number 172-1353 and fits standard 1/2″ and 7/16″ brake line ports.
Do I need any special tools to install the valve?
No special tools are required. The package includes a mounting bracket and connector kit, allowing you to bolt the valve in place and connect the brake lines using standard hand tools. Follow the installation guide for best results.
How does the dual‑port design improve braking?
The dual‑port design balances hydraulic pressure between the front and rear circuits, preventing excessive pressure to the front wheels while maintaining sufficient braking force to the rear wheels. This balance reduces the likelihood of wheel lock‑up and improves overall stopping stability.
Is the valve covered by a warranty?
Yes, DOVOSO provides a limited warranty that covers manufacturing defects for a specified period. Contact our customer support team with your purchase details for warranty assistance.
Can this valve be used on modern vehicles with ABS?
The DOVOSO Brass Proportioning Valve is intended for non‑ABS brake systems commonly found in classic vehicles. For modern ABS‑equipped cars, a compatible ABS‑compatible proportioning valve should be selected.




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