Fabricated Check Valve -20AN Male Outlets

The PWR NORTH AMERICA Fabricated Check Valve with -20AN Male Outlets (part number 70-11003) is a precision-engineered one-way flow control component designed for high-performance cooling and fluid systems. This aluminum check valve features a flapper design that allows fluid to flow freely in one direction while preventing backflow—a critical function in radiator circuits, auxiliary cooler installations, and custom cooling loops where pressure differentials or thermal cycling could otherwise force coolant backward and compromise system integrity.

The valve accepts -20AN male inlets and outlets, making it compatible with standard AN-threaded hose fittings and hard-line systems common in motorsports, marine, and industrial cooling applications. Two 8AN female O-ring ports provide auxiliary connection points for gauge lines, bleeder valves, or bypass circuits. The aluminum body with natural finish offers a weight advantage over steel counterparts while maintaining corrosion resistance suitable for most coolant environments. At 0.46 lbs and compact dimensions (5.15 × 2.35 × 6.7 inches), the valve integrates cleanly into tight engine bay layouts without excessive bulk or mounting complexity.

This check valve is essential for builders and technicians working on custom cooling systems where OEM factory parts are unavailable or incompatible with aftermarket radiators, electric fan conversions, or remote-mounted auxiliary coolers. It's particularly valuable in hot-rod, drag racing, and marine applications where thermal management requires fail-safe one-way flow to prevent coolant siphoning during engine shutdown or high-load operation. The -20AN connection standard ensures compatibility with precision hose assemblies and allows straightforward integration into existing platform-specific cooling infrastructure.