Edelbrock Single-Stage Power Valve Standard Flow 2 5 In Hg

This Edelbrock Single-Stage Power Valve is set to open at 2.5 inches of mercury (in. Hg) of engine vacuum. This specific vacuum setting is important because it dictates when the valve will allow extra fuel into your carburetor's main circuit. When your engine is under heavy load or accelerating hard, vacuum levels drop. This power valve opens up to supply that extra fuel needed to prevent hesitation or bogging, ensuring your engine runs smoothly and delivers power without interruption.

It's designed to work with popular Holley, Demon, and Quick Fuel carburetors, making it a practical replacement part for many vehicles. By using engine vacuum to control its operation, it ensures that additional fuel is only supplied when your engine actually needs it, which helps maintain good drivability during normal cruising and provides the boost you need when you step on the gas.

This standard flow power valve is a well-built component that keeps your performance carburetor in top running order. It's a straightforward part to replace, often requiring just a few minutes and basic tools to swap out during a carburetor tune-up or rebuild.