The one-way valves of the XVUR series, made of stainless steel, are suitable for installation in systems crossed by different types of fluid. The type of stainless steel used in all the components of the valve, the AISI316L, makes them suitable for use on machinery in the food or medical sector. XVUR-NPTF are non-return valves for in-line installation. The poppet is housed inside a valve body with BSPP-GAS female threads. The oil flow is free from port 2 to port 1 while it is interrupted from port 1 to port 2. Depending on the chosen size, the XVUR-NPTF valves can be used in systems with flow rates up to 50 lpm (13.2 gpm) and maximum working pressures up to 400 bar (5800 PSI).