Delta RP19804, Replacement Cartridge Assembly for Monitor Series

Delta RP19804 – Replacement Pressure Balance Cartridge for Monitor 1300/1400 Series Valves

The Delta RP19804 is a pressure balance cartridge designed for use with Delta Monitor 1300 and 1400 series tub and shower valves. This single-function cartridge maintains consistent water temperature by compensating for changes in pressure between hot and cold water lines, ensuring reliable operation and user safety.

Constructed from high-quality engineered polymer and brass components, the RP19804 is built to withstand daily wear in residential shower systems. The design includes a pressure-balancing spool and temperature-sensitive internal components that help maintain thermal stability within specified tolerance limits.

Product Features

• Application: Compatible with Delta Monitor 1300/1400 series valves
• Function: Pressure balance – single-handle operation
• Temperature Regulation: Maintains outlet temperature within ±3.6°F (±1.7°C)
• Construction: Composite body with brass control elements
• Operation: Pull-on/push-off with rotational temperature adjustment
• Includes: Factory-installed O-rings and seats

Installation Considerations

This cartridge is intended as a direct replacement for worn or damaged RP19804 units in existing Delta Monitor installations. It installs into the valve body using standard tools and does not require soldering. Ensure that water supply is shut off prior to disassembly. Use of plumber's silicone grease on O-rings is recommended for optimal seal and ease of installation.

Professional Use

The RP19804 supports repair and maintenance tasks for Delta pressure-balanced valve systems in both residential and light commercial applications. It is suitable for routine replacements during service calls or fixture upgrades involving trim and handle kits from the corresponding series.