RP19804 Pressure Balance Shower Cartridge

Key Features

• Maintains a balance of hot and cold water pressure.
• Regulates water temperature to within a safe range of ±3.6° F (±1.7° C).
• Durable plastic construction for reliable performance.
• Designed for single-handle tub and shower faucet controls.

Replaces / Cross-Reference Part Numbers

• Replaces OEM part number RP19804.

Compatibility & Fitment

• Fits Delta 1300 and 1400 series tub and shower valves.
• For single-handle pressure balance valves manufactured from 1993 to mid-2007.
• Verify visual match with your existing cartridge before ordering.

When to Replace

• Leaking or dripping from the faucet when in the off position.
• Difficulty achieving or maintaining a consistent water temperature.
• Reduced water flow or pressure from the shower head or spout.
• Handle is difficult to turn or does not shut off completely.

Installation Tips

• Shut off the main water supply to the shower before beginning work.
• Note the orientation of the old cartridge before removal to ensure correct installation.
• Flush the valve body by turning the water on for a few seconds to clear any debris.
• Lightly apply a silicone-based grease to O-rings for easier installation and a better seal.
• Secure the bonnet nut until snug, but do not over-tighten.