Wairool RP19804 Shower Cartridge for Delta 1300/1400 Series – Replacement Kit with RP22734 Nut

Upgrade your Delta shower with the Wairool RP19804 cartridge

The RP19804 cartridge is designed to fit Delta 1300/1400 series single-lever tub and shower valves produced before 2007. It delivers a smooth, consistent flow with improved control over hot and cold water, helping you tailor your shower experience without the guesswork.

Why this replacement makes sense

Built with a durable combination of sturdy plastic and brass, the cartridge includes an effective filter element that supports steady performance and may reduce maintenance needs. The included RP22734 bonnet nut helps seal the replacement more securely, contributing to reliable operation over time.

The design emphasizes a single-function pressure balance temperature control, aiming to keep water within a narrow range. In real-world use, this can help minimize sudden temperature changes as water pressure shifts, supporting a more comfortable shower experience.

Key benefits at a glance

• Compatibility: Fits Delta 1300/1400 series single-lever monitor valves made before 2007 (not for 13/14 series).
• Quality build: Durable plastic core with brass components and an effective filter element.
• Temperature stability: Maintains water within approximately ±3.6°F (±2°C) under changing pressure.
• Ease of install: Designed for straightforward replacement without altering the entire valve body.
• Sealing assurance: Replacing the bonnet nut helps improve valve seal and overall performance.

What you get and how to use it

• RP19804 cartridge
• RP22734 bonnet nut kit
• Tips: Before inserting, clean the surrounding area and check for debris in the handle or shower head, which can affect flow and temperature.

In everyday use, this replacement can offer a practical upgrade for households seeking reliable temperature control and a smoother shower routine. The stable balance may reduce the need for repeated adjustments, potentially saving water and time during busy mornings.