Pentair Hi-Flow 2" FNS Plus Valve without Plumbing

The Pentair Hi-Flow™ 2" Multiport Backwash Valve without Plumbing (Product #: 261152) is a commercial-grade fluid-routing manifold engineered to deliver high-capacity operational control and excellent hydraulic efficiency for premium diatomaceous earth filtration systems. Specifically designed as a direct-fit replacement for the Pentair FNS® Plus vertical grid D.E. filter series (as well as select Triton® sand and Quad D.E.® filters), this valve arrives configuration-ready, allowing pool technicians to utilize existing equipment piping or custom-plumb the pad. Injection-molded from a thick-walled, UV-stabilized engineering thermoplastic composite, the robust valve body provides permanent rustproofing and complete immunity to aggressive pool chemicals, high salt concentrations, and extreme seasonal heat under operating line pressures up to 50 PSI. Its large 2-inch internal porting configuration maximizes water velocity and minimizes friction loss, enabling modern variable-speed pumps to run at energy-saving lower speeds. The heavy-duty, over-molded manual lever handle allows operators to seamlessly index through six vital hydraulic modes—Filter, Backwash, Rinse, Waste, Closed, and Recirculate—while the internal pre-seated rubber spider gasket and high-tension stainless steel compression spring ensure absolute isolation between chambers to prevent waste line weeping or unfiltered fluid bypass. The physical dry weight of this Pentair 2" Hi-Flow Valve without Plumbing is approximately 4.60 pounds (with a boxed shipping weight of roughly 5.50 pounds), providing a rugged, long-lasting, and highly reliable centerpiece for pristine pool water management.