Watts - OFPRFC - 20 Micron Radial Flow Carbon Block Cartridge for OneFlow Plus System
This item is not currently in stock. It is on order and we expect it in our warehouse on or around November 11, 2026. Ordering now reserves a unit from that incoming shipment — we ship within one to two business days of it arriving.
To cancel for a full refund, email support@isopurewater.com or call 714-541-6600 any time before the item ships. Credit card refunds are issued within one billing cycle. If we learn we can’t ship by the date above, we’ll email you a revised shipping date and the option to cancel.
OFPRFC 20 Micron Radial Flow Carbon Block Cartridge
The Watts OFPRFC is a 20 micron radial flow carbon block cartridge designed specifically for the OneFlow Plus system (OFPSYS). This filter provides sediment reduction and activated carbon filtration to protect the downstream OneFlow media while improving taste and odor. Radial flow construction maximizes surface area and flow rate for whole-home applications.
What This Cartridge Does
Radial Flow Design
Water flows from outside to inside core, distributing sediment load evenly across entire surface for longer cartridge life and consistent flow rates
20 Micron Filtration
Captures sediment, silt, sand, rust, and particulate down to 20 microns to protect OneFlow template-assisted crystallization media
Carbon Block Media
Activated carbon reduces chlorine, taste, odor, and organic compounds that affect water quality before OneFlow conditioning
OEM Replacement
Factory-spec cartridge engineered by Watts for exact fit and performance in OneFlow Plus systems, not a generic substitute
Whole-Home Flow
Sized for residential flow rates up to 10 GPM, suitable for typical household water demand without pressure drop
6-Month Service Life
Replace every six months or sooner if flow rate decreases, depending on sediment load and water quality conditions
System Fitment
This OFPRFC cartridge is designed exclusively for the Watts OneFlow Plus system (model OFPSYS). It serves as the pre-filtration stage ahead of the OneFlow scale prevention media cartridge. Not compatible with standard 10" or 20" filter housings. Confirm your system model before ordering. Ideal for municipal water supplies with moderate sediment and chlorine where scale prevention is required without salt-based softening.
Watts has engineered water treatment solutions for over 140 years. Genuine OEM parts ensure your system operates as designed.
