The Fluidmaster Pro 75B Side Entry Valve provides superior water flow control for toilet cisterns and storage tanks. Engineered with a durable 1/2 inch brass UK shank, this fill valve ensures long-term reliability and corrosion resistance in both residential and commercial plumbing environments. The ultra-quiet refill mechanism is designed to minimize water hammer, delivering rapid cistern recovery with minimal noise. Designed for efficiency, the unique snap-release mechanism allows for fast, tool-free access to internal components for simple maintenance and servicing. This valve also features integrated anti-siphon protection, ensuring compliance with safety standards for potable water systems. Whether you are replacing an old unit or installing a new system, this side entry valve offers robust construction and easy installation to ensure consistent performance. Product summary: Fluidmaster PRO75B brass side entry cistern fill valve, 1/2 inch UK shank, quiet-fill toilet plumbing replacement part, anti-siphon valve, professional cistern maintenance hardware.