Grohe Valve Seat For Up Cisterns Dual Flush 42773000 / 4005176221583

Is your concealed toilet constantly running, trickling water into the bowl, or failing to hold its flush volume? Restore your plumbing system to peak efficiency with the Grohe Valve Seat (Part Number: 42773000). This genuine Grohe replacement part—also widely known as the bottom basket—provides the critical watertight base required for your toilet's flushing mechanism to function flawlessly. Manufactured from heavy-duty, corrosion-resistant plastic, this valve seat is engineered to endure years of continuous submersion, eliminating leaks and saving you money on your water utility bills. Key Features & Benefits: • Genuine Grohe Spare Part: Guarantees an exact, factory-grade fit and uncompromised performance compared to generic aftermarket alternatives. • Eliminates Constant Running: Corrects the root cause of phantom flushes and slow leaks by establishing a perfect bottom seal. • Dual-Flush Compatible: Specially designed to handle the internal water routing of modern eco-friendly dual-flush systems. • Built to Last: Constructed from high-impact composite polymers that resist mineral build-up and chemical degradation from water treatments. Technical Specifications: • Manufacturer Part Number (MPN): 42773000 (often referenced as 42773) • GTIN / EAN: 4005176221583 • Product Type: Cistern Valve Seat / Bottom Basket • Material: Premium Grade Plastic • Colour: White / Neutral Compatibility Information: • Specifically designed for Grohe UP Concealed Cisterns (built-in behind-the-wall toilet frames). • Engineered to house the Grohe EAU2 flushing mechanism. • Direct companion part to the Grohe 42774000 dual-flush valve.