Backflow Preventers

Apollo 4SG Series double-check valve assemblies are designed to prevent the backflow of contaminated water into the potable water supply system. They consist of two independently operating check valves (arranged in series), allowing double protection against backflow. These units have resilient seats to provide a bubble-tight seal between the valve body and the closure element (disc). They are made of high-quality materials for durability and corrosion resistance and have a grooved body for easy installation and maintenance. These double-check valves are ideal for use in commercial, industrial and municipal applications, such as water treatment plants, irrigation and fire sprinkler systems.

Apollo 4ALF-100 Series double check valves are used in water supply systems to prevent backflow and contamination. They ensure the safe and reliable flow of potable water by preventing the reverse flow of contaminated water, safeguarding public health and water quality. These double check valves have lead-free bronze construction for enhanced safety in potable water systems, meeting regulatory standards and protecting public health. They feature a FNPT connection that offers compatibility with standard pipe fittings, simplifying installation and allowing for easy integration into existing plumbing systems. These 4ALF-100 Series valves can operate at temperatures ranging from - 33 to 180 degrees F.