278614 DC-4 Double Check Valve, 3/8 in NPT, Compatible with Bendix

Key features

• Standardized 3/8" NPT Ports - Engineered with three precision-threaded 3/8"-18 NPT female ports (two Supply, one Delivery) for universal compatibility. This standardized sizing allows for a seamless, leak-free connection across most Class 6, 7, and 8 trucks, tractors, and trailers without the need for custom adapters.
• OEM Cross-Compatibility - It is a direct swap for Bendix 278614N, Haldex KN25060, Velvac 030031, and Meritor R955278614. Whether you operate a Freightliner, Kenworth, or Mack, this valve delivers an OEM-standard fit.
• Automatic Higher-Pressure Selection - The DC-4 Double Check Valve is a critical component designed to automatically route air from the higher-pressure source to a common delivery line. This ensures your heavy-duty air brake system maintains consistent actuation by prioritizing the strongest pressure signal at all times.
• All-Weather Durability - Built to withstand the harshest road conditions. This valve is designed to perform reliably in both freezing winter temperatures and high-heat conditions. The corrosion-resistant body prevents internal scaling and mechanical sticking over time.
• Simplified Mounting & Install - Features a compact, space-saving design with a built-in 0.34-inch (0.35") mounting hole for a secure, vibration-resistant installation. This "plug-and-play" unit allows for fast roadside repairs or scheduled fleet maintenance, significantly reducing your vehicle's costly downtime.

Free shipping included. 30-day hassle-free returns.