Ceramic Disc Cartridge and Balancing Spool

What is this?

This is a high-performance ceramic disc cartridge and balancing spool designed for single-handle pressure balance valves. It is the primary internal mechanism responsible for regulating both water flow and temperature in modern tub and shower systems.

What does it do?

• Maintains Constant Temperature: The integrated pressure balance technology protects you from "shower shock" by automatically adjusting the water mix when pressure changes occur in the plumbing line (like a toilet flushing).

• Leak Protection: Utilizing diamond-hard ceramic discs, this cartridge provides a watertight seal that is highly resistant to mineral buildup and wear, effectively stopping drips from the showerhead.

• Integrated Safety: This assembly typically includes built-in check valves, which prevent the cross-flow of hot and cold water and add an extra layer of protection for your home’s plumbing.

• Smooth Control: Designed for single-handle (1H) operation, it restores a smooth, easy glide to your faucet handle, allowing for precise control over the 2.2 GPM (gallons per minute) flow rate.

Will it fit my needs?

This unit is a direct replacement for various pressure balance mixing valves found in residential bath systems. It is characterized by its 38-point broach (the spline where the handle attaches) and is approximately 4-15/16 inches to 5 inches in total length. If your current shower valve is leaking or failing to maintain a steady temperature, this genuine OEM-style assembly is the standard repair solution.

What comes in the box?

• Ceramic Disc Cartridge

• Integrated Balancing Spool

• Check Valve Components