The 4" FNPT Brass Check Valve by Strataflo Products is designed for optimal flow control and backflow prevention. Featuring a Buna-N rubber poppet, this valve ensures a tight seal and reliable operation in various fluid applications. Its robust brass construction provides excellent resistance to corrosion and wear, making it suitable for both water and gas systems. The 4" FNPT connection allows for easy installation in standard piping setups. This check valve complies with industry standards, ensuring safety and performance in demanding environments.