BesNPT 1/4" NPT Female Brass Push Button Check Valve,Air One-Way Control Switch Shut-Off Valve

["Package Include: 1PCS 1/4\" NPT female x 1/4\" NPT female check valve","Feature:1/4 inch NPT female thread. Air One-Way Control Switch. Normally closed type.","Material: Solid brass. High strength, High temperature resistance, with certain anti freezing and anti impact capabilities","Easy to Use:The check valve is carefully designed with precision threads, which is easy to install and connect.","Application: Widely used in pump and compressor discharge cooling towers, HVAC systems, sump pumps, condensate line, pressure pumps and so on."]