The Watts 1R-1Y-1B WQC4RO13 annual replacement filter kit delivers three essential pre-filtration stages for your 13-inch 100 GPD reverse osmosis system using quick-change cartridge technology. Each cartridge features the Kwik-Change quarter-turn design with double o-rings and internal shutoff valves for leak-free maintenance.
SPECIFICATIONS
Kit Contents & Performance
| Kit Model | Watts 1R-1Y-1B WQC4RO13 |
| Stage 1 - Sediment | WQCSC13 (5 micron nominal) |
| Stage 2 - Carbon Block | WQCCC13 (10 micron nominal) |
| Stage 3 - GAC | WQCGAC13 (10 micron nominal) |
| Cartridge Height | 13 inches |
| System Compatibility | 100 GPD 13-inch RO systems |
| Connection Type | 1/4 turn quick-change |
| Replacement Schedule | Every 6 months |
INSTALLATION & USE
Filter Replacement Procedure
- Shut off water supply to the RO system and relieve system pressure by opening the dispensing faucet
- Rotate each old cartridge 1/4 turn counterclockwise to release from the manifold (internal valves automatically shut off water flow)
- Remove protective caps from new cartridges and align with manifold housings in proper order: sediment (WQCSC13), carbon block (WQCCC13), GAC (WQCGAC13)
- Push each new cartridge firmly into position and turn 1/4 turn clockwise until it locks into place
- Restore water supply and check all connections for leaks before returning system to normal operation
COMPATIBILITY
System Requirements
This Watts annual replacement kit is designed specifically for 13-inch Kwik-Change reverse osmosis systems rated at 100 gallons per day. The kit includes three pre-filtration cartridges but does not include the RO membrane element. Compatible with Watts WQC4RO systems and other manufacturers' 13-inch systems using the Kwik-Change quick-connect manifold design. Verify your current cartridge model numbers before ordering to ensure proper fit.
🔧 Pro Tip: Write the installation date on each cartridge with a permanent marker before installing. The double o-ring seals eliminate the need for lubricant, but if you experience resistance during installation, a small amount of food-grade silicone grease on the outer o-ring can ease insertion without compromising the seal.
