The BRITA PURITY 450/600 Replacement Head (SKU: 272100) is a genuine OEM pressure vessel lid designed specifically for PURITY 450 and 600 Quell ST water filtration systems. Engineered without an integrated digital display, this durable replacement head provides a secure, reliable seal for your filter cartridges. Featuring standard 3/4" male connections, it ensures optimal water flow and protection against leaks in demanding commercial beverage and coffee applications. (Please note: hoses and connection fittings are sold separately).