1" Female NPT (National Pipe Thread) Inlet And Outlet, Install In a Vertical Configuration Only 4.06" Height, Hex 1-1/2" 500 PSI Max, 60 CFM Flow Rate, -65° to 450°F, Reinforced PTFE Seal, 302 Stainless Steel Spring, 1" Female NPT measures 1.315" Thread Diameter Valves Open To Allow Flow In One Direction And Close When Flow Stops Or Reverses. Equipped With An 1/8" Female NPT Unloader Port And Plug Proudly Made in the USA By Conrader Valve Conrader CL-Series check valves are used in compressed gas and pneumatic systems. These valves open to allow flow in one direction and close when the flow stops or reverses. The CL-Series are used in-line and have female outlet connection. Conrader in-line check valves are of brass construction with a reinforced PTFE poppet and a stainless steel spring. The CL-Series are used in-line, have female connections, and are serviceable without removing the valve from the line. Intended for in-line use with vertical mounting orientation, making it suitable for piping systems where space and flow direction are considerations. Conrader is recognized for producing reliable, high-performance components for air compressor systems, ensuring that the CL Vertical Check Valve meets industry standards for quality and durability. Ideal for compressed air systems, pneumatic tools, and industrial gas applications where preventing backflow is essential for system efficiency and safety. Max Operating Pressure: 500 psi Operating Temperature Range: -65° to 450°F Flow Capacities: 10 to 95 SCFM Connection Sizes: 1/4″ to 1-1/2″ (-4 to -24) Connection Type: Female NPT Construction Material: Brass Seal: Reinforced PTFEConrader is recognized for producing reliable, high-performance components for air compressor systems, ensuring that the CL Vertical Check Valve meets industry standards for quality and durability.