Piston Piston Check Valve Type class 800. Piston type NPT thread ends - 2234N | Genebre Genebre Piston Check Valve Type class 800. Piston type NPT thread ends - 2234N | Genebre The Piston Check Valve Type Class 800 by Genebre, model 2234N, is a high-performance valve designed for industrial applications. It features a piston-type mechanism that ensures reliable flow control and prevents backflow. The valve is equipped with NPT (National Pipe Thread) thread ends, facilitating easy installation and secure connections. Its robust... View