Backflow: Designed with a draining mechanism to contaminated water from entering the main supply Easy Installation: Features a removable screw for permanent and secure connection, requiring none special tools or plumbing skills Made from heavy duty resistant brass for long lasting reliability and High Pressure Resistance: Withstands temperatures up to 180°F and pressures up to 125psi, suitable for most standard hoses and faucets Suitable for most of standard hose and end valves including hose bibs, sillcocks, garden spigot, outside water faucets, hydrants, Manufacturer: Bbajszx