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Products Features * Constructed from extruded bar stock * All Nigo's products conform to specifications ASTM (American Society for Testing and Materials) B124 and B16 * NPT threads on all Nigo's products meet ASME B1.20.1 * Designed for use in air, water, oil, nature, manufactured, mixed, liquefied petroleum or propane and LP Gas-Air * Use with brass, steel, and iron pipe; Teflon tape and thread sealant are recommended for threaded joints * No gasket required * Temperatures range from -65 to 250 F * Max. Pressure: 1000 PSI WOG About Us Nigo Industrial Co,. Ltd manufactures a wide variety of valves and pipe fittings. The company meets international organization for standardization ISO 9001:2015 Quality Management System standard.