The latest 3-A springless check valve has arrived! The requirement to clean and continuously maintain conventional check valves are overcome by eliminating the root cause of many problems: thespring. The YRGOS check valve design is based on the application of a magnetic field. The magnets built into the valve body keep the shutter in a closed position. When opposing flow is applied, the shutter moves away from the magnet, offering low resistance. After the opposing flow stops, the magnet will attract the shutter back to its seat, stopping any backflow. Because it operates without springs or discs, all vibrations are eliminated and the valve is completely hygienic with no area of stagnation. EPDM is standard. HNBR, FKM, Silicone and FEP seal materials are also available. 316L stainess steel. Suitable for CIP.