The SEALFAST SLCV400 is a 4-inch spring-loaded check valve designed for reliable backflow prevention in various fluid systems. Constructed from durable materials, this valve ensures longevity and performance under pressure. It features a robust spring mechanism that allows for quick closure, minimizing the risk of reverse flow. With a maximum pressure rating suitable for industrial applications, it complies with ANSI standards for safety and reliability. Ideal for use in water, oil, and gas systems, the SLCV400 is a critical component for maintaining system integrity.