Pentair 1/8" x 1 1/8" Stainless Steel Slide Valve Handle Lock Pin

The Pentair 1/8" x 1 1/8" Stainless Steel Slide Valve Handle Lock Pin (Product #: 273204) is a factory-original OEM replacement hardware fastener engineered to secure the manual control lever to the dynamic internal piston shaft of pool and spa backwash filtration manifolds. Specifically designed as a critical structural link for Pentair and PacFab 2-inch side-mounted PVC push-pull slide valves—which are routinely paired with premium Triton® II sand systems, FNS® Plus, and Quad D.E.® vertical grid separation tanks—this specialized cotter/lock pin is driven through the base of the exterior handle and the top of the central fluid-routing piston rod. By establishing a rigid mechanical anchor, the pin flawlessly translates physical pulling and pushing forces into internal vertical movement, enabling operators to smoothly switch the pool's water column between standard filtration and high-velocity backwash modes without the handle slipping, binding, or disconnecting under heavy system line pressures up to 50 PSI. Forged from high-tensile 18-8 grade (Type 304) marine stainless steel alloy, this high-yield pin delivers outstanding resistance to shear stress, continuous atmospheric pump room humidity, and severe seasonal thermal cycling. Its resilient metallic matrix remains completely immune to structural rust and chemical degradation from direct exposure to concentrated pool sanitation chemicals like chlorine shock, muriatic acid, and advanced salt-chlorine generation. The physical dry weight of this single Pentair 1/8" x 1 1/8" Stainless Steel Handle Lock Pin is approximately 0.010 pounds (roughly 0.16 ounces, with a nominal packaged retail shipping weight of up to 0.05 pounds depending on small-envelope sorting), providing an essential, durable, and rustproof hardware standard for uninterrupted filter pad fluid-management control.