The 1-1/2" FPT Threaded Lead-Free Brass Swing Check Valve by American Valve Co. is designed for use with water and oil. The valve features a brass body with a WSP rating of 125 psi, making it suitable for high-pressure applications. The swing check valve design allows for easy installation and maintenance, while the 1 1/2 inch diameter provides a flow rate suitable for various plumbing and hydraulic systems. This lead-free valve is a reliable and durable option for ensuring fluid direction in your system.