KN20619 MV-3 Dash Air Brake Control Valve - OEM-Quality Replacement

In this review the KN20619 MV-3 dash air brake control valve is judged on durability, compatibility, and ease of installation for commercial truck fleets. The bottom line: this valve is best for fleet technicians and owner-operators who need a direct OEM-quality replacement for Haldex and Volvo dash hand control valves because it combines a dual-circuit supply and integrated emergency/parking controls in a single, corrosion-resistant housing. For anyone who needs a like-for-like swap with minimal plumbing changes, the KN20619 delivers dependable function and long-term value.

Key Features

• OEM-Quality Replacement: Built to meet industry standards, the valve offers performance comparable to original equipment for reliable service on commercial trucks.
• Engineering Grade Composite Housing: The one-piece EGC construction provides corrosion resistance and durability needed for harsh operating environments.
• Broad Compatibility: Designed to match multiple part numbers across Haldex, Volvo, Freightliner, Keene and Newstar, reducing the need to hunt for model-specific parts.
• Dual-Circuit Design: The built-in dual-circuit supply allows independent control of tractor and trailer brakes, improving control and safety.
• Multifunctional Controls: Emergency and parking brake functions are integrated into one two-button push-pull unit, simplifying the dash layout and plumbing.
• Straightforward Installation: 3/8' PTC port sizes and compatible form factor make it a direct replacement that minimizes downtime during service.

Who It's For

The KN20619 is aimed at fleet maintenance shops, heavy-duty truck owners, and technicians who regularly service Haldex or Volvo dash valves and need a robust, plug-and-play replacement that matches existing plumbing and controls. Its OEM-equivalent performance and durable composite body suit vehicles that see heavy, continuous use and need components that resist corrosion and wear.

Those who should look elsewhere include owners of vehicles with nonstandard dash mounting or port configurations that differ from the MV-3 pattern, or anyone whose valve buttons use the MV-2 rolling-pin mounting style rather than screw-on MV-3 buttons; confirm the button style and the compatibility chart before purchasing.

Pros & Cons

Pros

• Direct OEM-quality replacement that reduces the risk of fitment issues and restores original functionality.
• Durable one-piece Engineering Grade Composite housing provides corrosion resistance.
• Integrated emergency and parking controls simplify installation and reduce plumbing complexity.
• Wide compatibility across multiple manufacturers and part numbers eases parts sourcing.

Cons

• Not suitable if the vehicle uses the MV-2 button mounting style; verify button attachment method before ordering.
• Limited to vehicles compatible with 3/8' PTC ports, so unusual plumbing sizes will require adapters.

Specifications

Our Verdict

The KN20619 MV-3 is a practical, value-minded replacement for fleets and technicians who need an OEM-equivalent dash valve with integrated parking and emergency controls. Its durable composite housing and broad cross-reference compatibility make it a reliable choice when the vehicle matches MV-3 mounting and 3/8' PTC ports, delivering good long-term service and reduced installation time.

Frequently Asked Questions

How do I tell if I need the MV-3 rather than the MV-2?
Check how the buttons mount to the valve: screw-on buttons indicate MV-3, rolling-pin mounted buttons indicate MV-2.

Will this valve fit Volvo and Haldex systems?
Yes; the KN20619 is cross-referenced to multiple Volvo and Haldex part numbers, but always confirm the fit with the vehicle compatibility chart.

Are adaptors required for installation?
Most heavy-duty trucks with standard plumbing will accept the 3/8' PTC ports directly; nonstandard plumbing may require adapters or professional fitting.