GROCO 1-1/2" Bronze In-Line Check Valve

The GROCO 1-1/2" Bronze In-Line Check Valve (Model CV-150) is a precision-engineered flow control component designed for fuel system and fluid transfer applications in marine, automotive, and industrial equipment. This check valve is built to prevent backflow and protect pumps and engines from siphoning, making it essential for diesel and gasoline fuel systems, water systems, and other liquid transfer installations where directional flow control is critical.

Manufactured from durable C83600 cast bronze, the GROCO check valve delivers exceptional corrosion resistance and longevity in harsh marine and industrial environments. The valve features NPT (National Pipe Thread) threaded ports for secure, leak-free connections and operates on a simple poppet mechanism that opens under forward pressure and closes automatically to block reverse flow. Bronze construction ensures compatibility with both fuel grades and fresh or saltwater applications, while the compact in-line design allows for straightforward integration into existing piping systems without requiring special adapters.

Ideal for boat engine fuel systems, RV water supply lines, and stationary diesel or gasoline generator installations, this 1-1/2" check valve prevents costly engine damage caused by fuel siphoning during pump failure or shutdown. The GROCO CV-150 is available in sizes ranging from 1/2" to 2", allowing you to select the exact port size matching your existing plumbing or fuel line configuration. Installation is straightforward—simply thread into NPT ports using standard wrenches, and the valve operates maintenance-free with no moving external parts to service.