GROCO 3/4" Bronze In-Line Check Valve

The GROCO 3/4" Bronze In-Line Check Valve (CV-75) is a precision-engineered fluid control component designed for marine, fuel transfer, and fluid circulation applications where reliable one-way flow control is essential. Built from C83600 cast bronze—a copper-tin alloy selected for superior corrosion resistance and structural integrity—this check valve prevents backflow and siphoning in systems where reverse flow would damage equipment or compromise safety.

The 3/4" NPT (National Pipe Thread) threaded ports provide secure, leak-resistant connections to standard plumbing and fluid system fittings. Cast bronze construction offers exceptional durability in both freshwater and saltwater environments, making it suitable for offshore and coastal installations where galvanic corrosion is a primary concern. The in-line design permits horizontal or vertical installation, and the internal poppet mechanism opens at minimal cracking pressure while shutting positively to block reverse flow. This valve is certified for use with diesel fuel and gasoline, making it compatible with fuel distribution systems, transfer pumps, and tank isolation applications across marine and industrial settings.

Operators in marine fuel systems, agricultural transfer applications, and equipment requiring fuel line isolation choose the GROCO CV-75 for its proven reliability and minimal maintenance. GROCO's standing in the marine plumbing and fuel handling industry reflects decades of original equipment manufacturer (OEM) specification and field performance in demanding saltwater and high-vibration environments. Weighing 0.55 lbs with compact dimensions (3" × 3" × 4"), this check valve integrates easily into existing systems without requiring extensive reconfiguration or additional support infrastructure.