EZ-Fluid Plumbing Brass Compression Tube Fitting, LF Brass Compression Union Coupling Adapter Fittings Connector Safe for Drinking water EZ-Fluid Plumbing brass compression fittings is made of high-quality Lead Free brass, with strong wear, corrosion resistance, high compressive strength, durability, low magnetic permeability and high temperature ductility , Brass compression tube fittings Good sealing and repeatability, temperature and pressure resistance. Perfect fit for oil, gas, water and other non-corrosive or corrosive pipeline systems, no need for welding and flaring tools, easy disassembly, installation and maintenance WORKING PRESSURE & TEMPERATURE - Maximum Working Temperature (F) 250 ,Maximum working pressure (psi) 150.