Pleatco PWK30V-XP Replacement Spa Filter – Watkins Hot Spring FH/IH 220V (C-5431 / FC-3910)

Previously listed as PWK30V-XP/C-5431

The Pleatco PWK30V-XP is a high-performance replacement filter designed specifically for Watkins Hot Spring spas operating on 220-volt systems. It is built using Pleatco’s advanced point-bonded filtration fabric combined with a free-flow core, allowing water to move efficiently through the cartridge for superior filtration while reducing stress on the spa pump. The filter measures approximately five inches in diameter and 10⅜ inches in length, with 1.9-inch open ends on both the top and bottom for quick, drop-in installation. Its 30-square-foot filtration surface, made from durable spun-bonded polyester, effectively traps dirt, oils, and debris without collapsing or restricting flow.

For added durability, the PWK30V-XP features reinforced, break-resistant bands that keep pleats evenly spaced, along with antimicrobial end caps that help protect against chlorine damage. The open-core design and easy-to-clean media allow the cartridge to be rinsed and reused multiple times, often lasting a full spa season with proper maintenance. This filter is a direct replacement for Unicel C-5431 and Filbur FC-3910 cartridges and is also referenced by part numbers 31233, PWK30V, and PWK30-220V. Manufactured in the USA and supported by a 30-day warranty, the PWK30V-XP delivers dependable performance, long service life, and a straightforward upgrade for Watkins Hot Spring FH/IH 220-V spa systems.