Lavelle Industries R528 Toilet Fill Valve Cap Assembly

Product Description

The Lavelle Industries R528 is a replacement cap assembly designed for toilet fill valves used in residential plumbing applications. The assembly consists of a plastic cap body paired with a rubber diaphragm, which together regulate water flow during the tank refill cycle. When the original cap or diaphragm wears out, the fill valve loses its ability to shut off cleanly, leading to running water or incomplete fills. The R528 restores proper valve function without requiring a full fill valve replacement. Licensed plumbers and experienced DIYers install this part as a cost-effective repair for compatible Korky fill valve models.

This cap assembly is suited for residential toilet tank repairs where the fill valve body remains serviceable but the cap or diaphragm has degraded. It is designed to fit Korky Quietfill and Platinum Toto fill valves. The part is sold individually and does not include the fill valve itself. It is appropriate for standard toilet tank installations in residential bathrooms and is a direct replacement for the factory-installed cap on compatible valves.

Key Features

• Plastic cap body provides durable, corrosion-resistant construction
• Premium long-lasting rubber diaphragm for reliable valve shutoff
• Fits Korky Quietfill and Platinum Toto fill valves
• Sold as a single cap assembly unit
• Restores fill valve function without full valve replacement

Compatibility

Designed to fit Korky Quietfill and Platinum Toto fill valves. Fill valve is not included. Verify the existing valve model before ordering to confirm fitment.

Installation Notes

Shut off the water supply to the toilet at the stop valve and flush to empty the tank before beginning work. This repair is within the scope of a licensed plumber or a qualified DIYer familiar with toilet tank components. No special tools are required beyond basic hand tools. After installation, restore water supply slowly and observe the valve through one full fill cycle to confirm proper shutoff.

Technical Specifications

• Material: Plastic body with rubber diaphragm
• Weight: 1 pound
• Unit of Measure: Each
• Package Quantity: 12

Standard Information

• Brand: Lavelle Industries Inc
• Manufacturer Part Number: R528