Lavelle Industries R528 Fill Valve Replacement Cap Kit

Product Description

The LAVELLE INDUSTRIES R528 is a replacement cap assembly designed for toilet fill valves. It restores proper fill valve function by replacing the cap and diaphragm assembly rather than requiring a full valve replacement. The R528 features plastic construction with a long-lasting rubber diaphragm, providing a durable seal that resists wear over repeated fill cycles. Plumbers and experienced DIYers install this part as a targeted repair to correct running toilets, inconsistent fill rates, or failed diaphragm seals. The repair kit approach reduces material cost and labor time compared to replacing the entire fill valve assembly.

The R528 is intended for use with Korky QuietFILL fill valves, Korky MaxPERFORMANCE fill valves, and TOTO fill valves. The fill valve itself is not included. This cap assembly is suited for residential toilet repair applications where the existing fill valve body is in serviceable condition and only the cap or diaphragm has failed or degraded.

Key Features

• Plastic cap construction with integrated rubber diaphragm for a reliable seal
• Long-lasting rubber diaphragm resists wear over extended service life
• Sold individually as a direct replacement cap assembly
• Compatible with multiple Korky and TOTO fill valve models
• Targeted repair component reduces need for full fill valve replacement

Compatibility

Compatible with Korky QuietFILL fill valves, Korky MaxPERFORMANCE fill valves, and TOTO fill valves. Fill valve is not included with this kit.

Installation Notes

Installation is performed by a licensed plumber or qualified individual. Shut off the water supply to the toilet at the angle stop valve and flush to depressurize the tank before beginning work. Remove the existing cap assembly and replace with the R528 according to the fill valve manufacturer instructions. Restore water supply and verify the fill cycle operates correctly with no leaks before returning the fixture to service.

Technical Specifications

• Material: Plastic body with rubber diaphragm
• Weight: 0.063 pounds
• Unit of Measure: Each
• Minimum Order Quantity: 3
• UPC: 00749306528039

Standard Information

• Brand: LAVELLE INDUSTRIES
• Manufacturer Part Number: R528