Maintain a secure, leak-free seal with the Pentair R172221 Drain & Vent Valve O‑Ring, designed for High Capacity Automatic Feeders, Dynamic Series Cartridge Filters, and Chlorine/Bromine Dispensers.

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Key Features:

• Genuine Pentair OEM replacement O‑Ring

• Compatible with High Capacity Automatic Feeders (HC‑3315, HC‑3330, HC‑3340)

• Also fits Dynamic Series cartridge filters (RDC‑25, RDC‑25S, RDC‑50, RDC‑50S, RTL/RCF) and chlorine/bromine dispensers

• Precisely engineered to provide a tight, leak-resistant seal around drain and vent valves

• Chemical-resistant design ensures long-lasting performance even in demanding pool and spa environments

• Simple, tool-free installation for quick maintenance and reduced downtime

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Product Overview:
The Pentair R172221 Drain & Vent Valve O‑Ring is an essential component for preserving system integrity and preventing leaks in Pentair filtration and chemical feeder systems. Engineered to ensure a precise fit around drain and vent valves, this OEM O‑Ring upholds proper system pressure and maintains optimal performance. Built from durable, chemical-resistant materials, it’s designed to withstand harsh conditions and endure frequent use. Easy to install, the R172221 O‑Ring streamlines maintenance, minimises downtime, and safeguards the functionality of your pool or spa system.